Documentation Revamp

Co-authored-by: jbdoumenjou <jb.doumenjou@gmail.com>
This commit is contained in:
Gérald Croës 2019-02-26 05:50:07 -08:00 committed by Traefiker Bot
parent 848e45c22c
commit ac6b11037d
174 changed files with 5858 additions and 4002 deletions

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# BoltDB Provider
Traefik can be configured to use BoltDB as a provider.
```toml
################################################################
# BoltDB Provider
################################################################
# Enable BoltDB Provider.
[boltdb]
# BoltDB file.
#
# Required
# Default: "127.0.0.1:4001"
#
endpoint = "/my.db"
# Enable watch BoltDB changes.
#
# Optional
# Default: true
#
watch = true
# Prefix used for KV store.
#
# Optional
# Default: "/traefik"
#
prefix = "/traefik"
# Override default configuration template.
# For advanced users :)
#
# Optional
#
filename = "boltdb.tmpl"
# Use BoltDB user/pass authentication.
#
# Optional
#
# username = foo
# password = bar
# Enable BoltDB TLS connection.
#
# Optional
#
# [boltdb.tls]
# ca = "/etc/ssl/ca.crt"
# cert = "/etc/ssl/boltdb.crt"
# key = "/etc/ssl/boltdb.key"
# insecureSkipVerify = true
```
To enable constraints see [provider-specific constraints section](/configuration/commons/#provider-specific).

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# Consul Key-Value Provider
Traefik can be configured to use Consul as a provider.
```toml
################################################################
# Consul KV Provider
################################################################
# Enable Consul KV Provider.
[consul]
# Consul server endpoint.
#
# Required
# Default: "127.0.0.1:8500"
#
endpoint = "127.0.0.1:8500"
# Enable watch Consul changes.
#
# Optional
# Default: true
#
watch = true
# Prefix used for KV store.
#
# Optional
# Default: traefik
#
prefix = "traefik"
# Override default configuration template.
# For advanced users :)
#
# Optional
#
# filename = "consul.tmpl"
# Use Consul user/pass authentication.
#
# Optional
#
# username = foo
# password = bar
# Enable Consul TLS connection.
#
# Optional
#
# [consul.tls]
# ca = "/etc/ssl/ca.crt"
# cert = "/etc/ssl/consul.crt"
# key = "/etc/ssl/consul.key"
# insecureSkipVerify = true
```
To enable constraints see [provider-specific constraints section](/configuration/commons/#provider-specific).
Please refer to the [Key Value storage structure](/user-guide/kv-config/#key-value-storage-structure) section to get documentation on Traefik KV structure.

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# Consul Catalog Provider
Traefik can be configured to use service discovery catalog of Consul as a provider.
```toml
################################################################
# Consul Catalog Provider
################################################################
# Enable Consul Catalog Provider.
[consulCatalog]
# Consul server endpoint.
#
# Required
# Default: "127.0.0.1:8500"
#
endpoint = "127.0.0.1:8500"
# Expose Consul catalog services by default in Traefik.
#
# Optional
# Default: true
#
exposedByDefault = false
# Allow Consul server to serve the catalog reads regardless of whether it is the leader.
#
# Optional
# Default: false
#
stale = false
# Default base domain used for the frontend rules.
#
# Optional
#
domain = "consul.localhost"
# Prefix for Consul catalog tags.
#
# Optional
# Default: "traefik"
#
prefix = "traefik"
# Default frontEnd Rule for Consul services.
#
# The format is a Go Template with:
# - ".ServiceName", ".Domain" and ".Attributes" available
# - "getTag(name, tags, defaultValue)", "hasTag(name, tags)" and "getAttribute(name, tags, defaultValue)" functions are available
# - "getAttribute(...)" function uses prefixed tag names based on "prefix" value
#
# Optional
# Default: "Host:{{.ServiceName}}.{{.Domain}}"
#
#frontEndRule = "Host:{{.ServiceName}}.{{.Domain}}"
# Enable Consul catalog TLS connection.
#
# Optional
#
# [consulCatalog.tls]
# ca = "/etc/ssl/ca.crt"
# cert = "/etc/ssl/consul.crt"
# key = "/etc/ssl/consul.key"
# insecureSkipVerify = true
# Override default configuration template.
# For advanced users :)
#
# Optional
#
# filename = "consulcatalog.tmpl"
# Override template version
# For advanced users :)
#
# Optional
# - "1": previous template version (must be used only with older custom templates, see "filename")
# - "2": current template version (must be used to force template version when "filename" is used)
#
# templateVersion = 2
```
This provider will create routes matching on hostname based on the service name used in Consul.
To enable constraints see [provider-specific constraints section](/configuration/commons/#provider-specific).
## Tags
Additional settings can be defined using Consul Catalog tags.
!!! note
The default prefix is `traefik`.
| Label | Description |
|--------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `<prefix>.enable=false` | Disables this container in Traefik. |
| `<prefix>.protocol=https` | Overrides the default `http` protocol. |
| `<prefix>.weight=10` | Assigns this weight to the container. |
| `traefik.backend.buffering.maxRequestBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.maxResponseBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.memRequestBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.memResponseBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.retryExpression=EXPR` | See [buffering](/configuration/commons/#buffering) section. |
| `<prefix>.backend.circuitbreaker.expression=EXPR` | Creates a [circuit breaker](/basics/#backends) to be used against the backend. ex: `NetworkErrorRatio() > 0.` |
| `<prefix>.backend.responseForwarding.flushInterval=10ms` | Defines the interval between two flushes when forwarding response from backend to client. |
| `<prefix>.backend.healthcheck.path=/health` | Enables health check for the backend, hitting the container at `path`. |
| `<prefix>.backend.healthcheck.interval=5s` | Defines the health check interval. |
| `<prefix>.backend.healthcheck.timeout=3s` | Defines the health check request timeout |
| `<prefix>.backend.healthcheck.port=8080` | Sets a different port for the health check. |
| `traefik.backend.healthcheck.scheme=http` | Overrides the server URL scheme. |
| `<prefix>.backend.healthcheck.hostname=foobar.com` | Defines the health check hostname. |
| `<prefix>.backend.healthcheck.headers=EXPR` | Defines the health check request headers <br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
| `<prefix>.backend.loadbalancer.method=drr` | Overrides the default `wrr` load balancer algorithm. |
| `<prefix>.backend.loadbalancer.stickiness=true` | Enables backend sticky sessions. |
| `<prefix>.backend.loadbalancer.stickiness.cookieName=NAME` | Sets the cookie name manually for sticky sessions. |
| `<prefix>.backend.maxconn.amount=10` | Sets a maximum number of connections to the backend.<br>Must be used in conjunction with the below label to take effect. |
| `<prefix>.backend.maxconn.extractorfunc=client.ip` | Sets the function to be used against the request to determine what to limit maximum connections to the backend by.<br>Must be used in conjunction with the above label to take effect. |
| `<prefix>.frontend.auth.basic=EXPR` | Sets basic authentication to this frontend in CSV format: `User:Hash,User:Hash` (DEPRECATED). |
| `<prefix>.frontend.auth.basic.removeHeader=true` | If set to `true`, removes the `Authorization` header. |
| `<prefix>.frontend.auth.basic.users=EXPR` | Sets basic authentication to this frontend in CSV format: `User:Hash,User:Hash`. |
| `<prefix>.frontend.auth.basic.usersfile=/path/.htpasswd` | Sets basic authentication with an external file; if users and usersFile are provided, both are merged, with external file contents having precedence. |
| `<prefix>.frontend.auth.digest.removeHeader=true` | If set to `true`, removes the `Authorization` header. |
| `<prefix>.frontend.auth.digest.users=EXPR` | Sets digest authentication to this frontend in CSV format: `User:Realm:Hash,User:Realm:Hash`. |
| `<prefix>.frontend.auth.digest.usersfile=/path/.htdigest` | Sets digest authentication with an external file; if users and usersFile are provided, both are merged, with external file contents having precedence. |
| `<prefix>.frontend.auth.forward.address=https://example.com` | Sets the URL of the authentication server. |
| `<prefix>.frontend.auth.forward.authResponseHeaders=EXPR` | Sets the forward authentication authResponseHeaders in CSV format: `X-Auth-User,X-Auth-Header` |
| `<prefix>.frontend.auth.forward.tls.ca=/path/ca.pem` | Sets the Certificate Authority (CA) for the TLS connection with the authentication server. |
| `<prefix>.frontend.auth.forward.tls.caOptional=true` | Checks the certificates if present but do not force to be signed by a specified Certificate Authority (CA). |
| `<prefix>.frontend.auth.forward.tls.cert=/path/server.pem` | Sets the Certificate for the TLS connection with the authentication server. |
| `<prefix>.frontend.auth.forward.tls.insecureSkipVerify=true` | If set to true invalid SSL certificates are accepted. |
| `<prefix>.frontend.auth.forward.tls.key=/path/server.key` | Sets the Certificate for the TLS connection with the authentication server. |
| `<prefix>.frontend.auth.forward.trustForwardHeader=true` | Trusts X-Forwarded-* headers. |
| `<prefix>.frontend.auth.headerField=X-WebAuth-User` | Sets the header used to pass the authenticated user to the application. |
| `<prefix>.frontend.entryPoints=http,https` | Assigns this frontend to entry points `http` and `https`.<br>Overrides `defaultEntryPoints` |
| `<prefix>.frontend.errors.<name>.backend=NAME` | See [custom error pages](/configuration/commons/#custom-error-pages) section. |
| `<prefix>.frontend.errors.<name>.query=PATH` | See [custom error pages](/configuration/commons/#custom-error-pages) section. |
| `<prefix>.frontend.errors.<name>.status=RANGE` | See [custom error pages](/configuration/commons/#custom-error-pages) section. |
| `<prefix>.frontend.passHostHeader=true` | Forwards client `Host` header to the backend. |
| `<prefix>.frontend.passTLSClientCert.infos.issuer.commonName=true` | Add the issuer.commonName field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `<prefix>.frontend.passTLSClientCert.infos.issuer.country=true` | Add the issuer.country field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `<prefix>.frontend.passTLSClientCert.infos.issuer.domainComponent=true` | Add the issuer.domainComponent field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `<prefix>.frontend.passTLSClientCert.infos.issuer.locality=true` | Add the issuer.locality field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `<prefix>.frontend.passTLSClientCert.infos.issuer.organization=true` | Add the issuer.organization field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `<prefix>.frontend.passTLSClientCert.infos.issuer.province=true` | Add the issuer.province field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `<prefix>.frontend.passTLSClientCert.infos.issuer.serialNumber=true` | Add the subject.serialNumber field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `<prefix>.frontend.passTLSClientCert.infos.notAfter=true` | Add the noAfter field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `<prefix>.frontend.passTLSClientCert.infos.notBefore=true` | Add the noBefore field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `<prefix>.frontend.passTLSClientCert.infos.sans=true` | Add the sans field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `<prefix>.frontend.passTLSClientCert.infos.subject.commonName=true` | Add the subject.commonName field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `<prefix>.frontend.passTLSClientCert.infos.subject.country=true` | Add the subject.country field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `<prefix>.frontend.passTLSClientCert.infos.subject.domainComponent=true` | Add the subject.domainComponent field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `<prefix>.frontend.passTLSClientCert.infos.subject.locality=true` | Add the subject.locality field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `<prefix>.frontend.passTLSClientCert.infos.subject.organization=true` | Add the subject.organization field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `<prefix>.frontend.passTLSClientCert.infos.subject.province=true` | Add the subject.province field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `<prefix>.frontend.passTLSClientCert.infos.subject.serialNumber=true` | Add the subject.serialNumber field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `<prefix>.frontend.passTLSClientCert.pem=true` | Pass the escaped pem in the `X-Forwarded-Ssl-Client-Cert` header. |
| `<prefix>.frontend.passTLSCert=true` | Forwards TLS Client certificates to the backend. |
| `<prefix>.frontend.priority=10` | Overrides default frontend priority. |
| `<prefix>.frontend.rateLimit.extractorFunc=EXP` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
| `<prefix>.frontend.rateLimit.rateSet.<name>.period=6` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
| `<prefix>.frontend.rateLimit.rateSet.<name>.average=6` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
| `<prefix>.frontend.rateLimit.rateSet.<name>.burst=6` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
| `<prefix>.frontend.redirect.entryPoint=https` | Enables Redirect to another entryPoint to this frontend (e.g. HTTPS). |
| `<prefix>.frontend.redirect.regex=^http://localhost/(.*)` | Redirects to another URL to this frontend.<br>Must be set with `traefik.frontend.redirect.replacement`. |
| `<prefix>.frontend.redirect.replacement=http://mydomain/$1` | Redirects to another URL to this frontend.<br>Must be set with `traefik.frontend.redirect.regex`. |
| `<prefix>.frontend.redirect.permanent=true` | Returns 301 instead of 302. |
| `<prefix>.frontend.rule=EXPR` | Overrides the default frontend rule. Default: `Host:{{.ServiceName}}.{{.Domain}}`. |
| `<prefix>.frontend.whiteList.sourceRange=RANGE` | Sets a list of IP-Ranges which are allowed to access.<br>An unset or empty list allows all Source-IPs to access. If one of the Net-Specifications are invalid, the whole list is invalid and allows all Source-IPs to access. |
| `<prefix>.frontend.whiteList.ipStrategy=true` | Uses the default IPStrategy.<br>Can be used when there is an existing `clientIPStrategy` but you want the remote address for whitelisting. |
| `<prefix>.frontend.whiteList.ipStrategy.depth=5` | See [whitelist](/configuration/entrypoints/#white-listing) |
| `<prefix>.frontend.whiteList.ipStrategy.excludedIPs=127.0.0.1` | See [whitelist](/configuration/entrypoints/#white-listing) |
### Multiple frontends for a single service
If you need to support multiple frontends for a service, for example when having multiple `rules` that can't be combined, specify them as follows:
```
<prefix>.frontends.A.rule=Host:A:PathPrefix:/A
<prefix>.frontends.B.rule=Host:B:PathPrefix:/
```
`A` and `B` here are just arbitrary names, they can be anything. You can use any setting that applies to `<prefix>.frontend` from the table above.
### Custom Headers
!!! note
The default prefix is `traefik`.
| Label | Description |
|--------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `<prefix>.frontend.headers.customRequestHeaders=EXPR ` | Provides the container with custom request headers that will be appended to each request forwarded to the container.<br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
| `<prefix>.frontend.headers.customResponseHeaders=EXPR` | Appends the headers to each response returned by the container, before forwarding the response to the client.<br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
### Security Headers
!!! note
The default prefix is `traefik`.
| Label | Description |
|-----------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `<prefix>.frontend.headers.allowedHosts=EXPR` | Provides a list of allowed hosts that requests will be processed.<br>Format: `Host1,Host2` |
| `<prefix>.frontend.headers.browserXSSFilter=true` | Adds the X-XSS-Protection header with the value `1; mode=block`. |
| `<prefix>.frontend.headers.contentSecurityPolicy=VALUE` | Adds CSP Header with the custom value. |
| `<prefix>.frontend.headers.contentTypeNosniff=true` | Adds the `X-Content-Type-Options` header with the value `nosniff`. |
| `<prefix>.frontend.headers.customBrowserXSSValue=VALUE` | Set custom value for X-XSS-Protection header. This overrides the BrowserXssFilter option. |
| `<prefix>.frontend.headers.customFrameOptionsValue=VALUE` | Overrides the `X-Frame-Options` header with the custom value. |
| `<prefix>.frontend.headers.forceSTSHeader=false` | Adds the STS header to non-SSL requests. |
| `<prefix>.frontend.headers.frameDeny=false` | Adds the `X-Frame-Options` header with the value of `DENY`. |
| `<prefix>.frontend.headers.hostsProxyHeaders=EXPR` | Provides a list of headers that the proxied hostname may be stored.<br>Format: `HEADER1,HEADER2` |
| `<prefix>.frontend.headers.isDevelopment=false` | This will cause the `AllowedHosts`, `SSLRedirect`, and `STSSeconds`/`STSIncludeSubdomains` options to be ignored during development.<br>When deploying to production, be sure to set this to false. |
| `<prefix>.frontend.headers.publicKey=VALUE` | Adds HPKP header. |
| `<prefix>.frontend.headers.referrerPolicy=VALUE` | Adds referrer policy header. |
| `<prefix>.frontend.headers.SSLRedirect=true` | Forces the frontend to redirect to SSL if a non-SSL request is sent. |
| `<prefix>.frontend.headers.SSLTemporaryRedirect=true` | Forces the frontend to redirect to SSL if a non-SSL request is sent, but by sending a 302 instead of a 301. |
| `<prefix>.frontend.headers.SSLHost=HOST` | This setting configures the hostname that redirects will be based on. Default is "", which is the same host as the request. |
| `<prefix>.frontend.headers.SSLForceHost=true` | If `SSLForceHost` is `true` and `SSLHost` is set, requests will be forced to use `SSLHost` even the ones that are already using SSL. Default is false. |
| `<prefix>.frontend.headers.SSLProxyHeaders=EXPR` | Header combinations that would signify a proper SSL Request (Such as `X-Forwarded-For:https`).<br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
| `<prefix>.frontend.headers.STSSeconds=315360000` | Sets the max-age of the STS header. |
| `<prefix>.frontend.headers.STSIncludeSubdomains=true` | Adds the `IncludeSubdomains` section of the STS header. |
| `<prefix>.frontend.headers.STSPreload=true` | Adds the preload flag to the STS header. |
### Examples
If you want that Traefik uses Consul tags correctly you need to defined them like that:
```js
traefik.enable=true
traefik.tags=api
traefik.tags=external
```
If the prefix defined in Traefik configuration is `bla`, tags need to be defined like that:
```js
bla.enable=true
bla.tags=api
bla.tags=external
```

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| `traefik.domain` | Sets the default base domain for the frontend rules. For more information, check the [Container Labels section's of the user guide "Let's Encrypt & Docker"](/user-guide/docker-and-lets-encrypt/#container-labels) |
| `traefik.port=80` | Registers this port. Useful when the container exposes multiples ports. |
| `traefik.protocol=https` | Overrides the default `http` protocol |
| `traefik.weight=10` | Assigns this weight to the container
[2] `traefik.frontend.auth.basic.users=EXPR`:
To create `user:password` pair, it's possible to use this command:
`echo $(htpasswd -nb user password) | sed -e s/\\$/\\$\\$/g`.
The result will be `user:$$apr1$$9Cv/OMGj$$ZomWQzuQbL.3TRCS81A1g/`, note additional symbol `$` makes escaping.
[3] `traefik.backend.loadbalancer.swarm`:
If you enable this option, Traefik will use the virtual IP provided by docker swarm instead of the containers IPs.
Which means that Traefik will not perform any kind of load balancing and will delegate this task to swarm.
It also means that Traefik will manipulate only one backend, not one backend per container.
!!! warning
When running inside a container, Traefik will need network access through:
`docker network connect <network> <traefik-container>`

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# DynamoDB Provider
Traefik can be configured to use Amazon DynamoDB as a provider.
## Configuration
```toml
################################################################
# DynamoDB Provider
################################################################
# Enable DynamoDB Provider.
[dynamodb]
# Region to use when connecting to AWS.
#
# Required
#
region = "us-west-1"
# DyanmoDB Table Name.
#
# Optional
# Default: "traefik"
#
tableName = "traefik"
# Enable watch DynamoDB changes.
#
# Optional
# Default: true
#
watch = true
# Polling interval (in seconds).
#
# Optional
# Default: 15
#
refreshSeconds = 15
# Access Key ID to use when connecting to AWS.
#
# Optional
#
accessKeyID = "abc"
# Secret Access Key to use when connecting to AWS.
#
# Optional
#
secretAccessKey = "123"
# Endpoint of local dynamodb instance for testing?
#
# Optional
#
endpoint = "http://localhost:8080"
```
## Table Items
Items in the `dynamodb` table must have three attributes:
- `id` (string): The id is the primary key.
- `name`(string): The name is used as the name of the frontend or backend.
- `frontend` or `backend` (map): This attribute's structure matches exactly the structure of a Frontend or Backend type in Traefik.
See `types/types.go` for details.
The presence or absence of this attribute determines its type.
So an item should never have both a `frontend` and a `backend` attribute.

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# ECS Provider
Traefik can be configured to use Amazon ECS as a provider.
## Configuration
```toml
################################################################
# ECS Provider
################################################################
# Enable ECS Provider.
[ecs]
# ECS Clusters Name.
#
# Optional
# Default: ["default"]
#
clusters = ["default"]
# Enable watch ECS changes.
#
# Optional
# Default: true
#
watch = true
# Default base domain used for the frontend rules.
# Can be overridden by setting the "traefik.domain" label.
#
# Optional
# Default: ""
#
domain = "ecs.localhost"
# Enable auto discover ECS clusters.
#
# Optional
# Default: false
#
autoDiscoverClusters = false
# Polling interval (in seconds).
#
# Optional
# Default: 15
#
refreshSeconds = 15
# Expose ECS services by default in Traefik.
#
# Optional
# Default: true
#
exposedByDefault = false
# Region to use when connecting to AWS.
#
# Optional
#
region = "us-east-1"
# Access Key ID to use when connecting to AWS.
#
# Optional
#
accessKeyID = "abc"
# Secret Access Key to use when connecting to AWS.
#
# Optional
#
secretAccessKey = "123"
# Override default configuration template.
# For advanced users :)
#
# Optional
#
# filename = "ecs.tmpl"
# Override template version
# For advanced users :)
#
# Optional
# - "1": previous template version (must be used only with older custom templates, see "filename")
# - "2": current template version (must be used to force template version when "filename" is used)
#
# templateVersion = 2
```
If `accessKeyID`/`secretAccessKey` is not given credentials will be resolved in the following order:
- From environment variables; `AWS_ACCESS_KEY_ID`, `AWS_SECRET_ACCESS_KEY`, and `AWS_SESSION_TOKEN`.
- Shared credentials, determined by `AWS_PROFILE` and `AWS_SHARED_CREDENTIALS_FILE`, defaults to `default` and `~/.aws/credentials`.
- EC2 instance role or ECS task role
To enable constraints see [provider-specific constraints section](/configuration/commons/#provider-specific).
## Policy
Traefik needs the following policy to read ECS information:
```json
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "TraefikECSReadAccess",
"Effect": "Allow",
"Action": [
"ecs:ListClusters",
"ecs:DescribeClusters",
"ecs:ListTasks",
"ecs:DescribeTasks",
"ecs:DescribeContainerInstances",
"ecs:DescribeTaskDefinition",
"ec2:DescribeInstances"
],
"Resource": [
"*"
]
}
]
}
```
## Labels: overriding default behavior
Labels can be used on task containers to override default behavior:
| Label | Description |
|-------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `traefik.domain` | Sets the default base domain for frontend rules. |
| `traefik.enable=false` | Disables this container in Traefik. |
| `traefik.port=80` | Overrides the default `port` value. Overrides `NetworkBindings` from Docker Container |
| `traefik.protocol=https` | Overrides the default `http` protocol |
| `traefik.weight=10` | Assigns this weight to the container |
| `traefik.backend=foo` | Overrides the service name by `foo` in the generated name of the backend. |
| `traefik.backend.buffering.maxRequestBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.maxResponseBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.memRequestBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.memResponseBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.retryExpression=EXPR` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.circuitbreaker.expression=EXPR` | Creates a [circuit breaker](/basics/#backends) to be used against the backend |
| `traefik.backend.responseForwarding.flushInterval=10ms` | Defines the interval between two flushes when forwarding response from backend to client. |
| `traefik.backend.healthcheck.path=/health` | Enables health check for the backend, hitting the container at `path`. |
| `traefik.backend.healthcheck.interval=5s` | Defines the health check interval. (Default: 30s) |
| `traefik.backend.healthcheck.timeout=3s` | Defines the health check request timeout. (Default: 5s) |
| `traefik.backend.healthcheck.scheme=http` | Overrides the server URL scheme. |
| `traefik.backend.healthcheck.port=8080` | Sets a different port for the health check. |
| `traefik.backend.healthcheck.hostname=foobar.com` | Defines the health check hostname. |
| `traefik.backend.healthcheck.headers=EXPR` | Defines the health check request headers <br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
| `traefik.backend.loadbalancer.method=drr` | Overrides the default `wrr` load balancer algorithm |
| `traefik.backend.loadbalancer.stickiness=true` | Enables backend sticky sessions |
| `traefik.backend.loadbalancer.stickiness.cookieName=NAME` | Sets the cookie manually name for sticky sessions |
| `traefik.backend.maxconn.amount=10` | Sets a maximum number of connections to the backend.<br>Must be used in conjunction with the below label to take effect. |
| `traefik.backend.maxconn.extractorfunc=client.ip` | Sets the function to be used against the request to determine what to limit maximum connections to the backend by.<br>Must be used in conjunction with the above label to take effect. |
| `traefik.frontend.auth.basic=EXPR` | Sets basic authentication to this frontend in CSV format: `User:Hash,User:Hash` (DEPRECATED). |
| `traefik.frontend.auth.basic.removeHeader=true` | If set to `true`, removes the `Authorization` header. |
| `traefik.frontend.auth.basic.users=EXPR` | Sets basic authentication to this frontend in CSV format: `User:Hash,User:Hash`. |
| `traefik.frontend.auth.basic.usersFile=/path/.htpasswd` | Sets basic authentication with an external file; if users and usersFile are provided, both are merged, with external file contents having precedence. |
| `traefik.frontend.auth.digest.removeHeader=true` | If set to `true`, removes the `Authorization` header. |
| `traefik.frontend.auth.digest.users=EXPR` | Sets digest authentication to this frontend in CSV format: `User:Realm:Hash,User:Realm:Hash`. |
| `traefik.frontend.auth.digest.usersFile=/path/.htdigest` | Sets digest authentication with an external file; if users and usersFile are provided, both are merged, with external file contents having precedence. |
| `traefik.frontend.auth.forward.address=https://example.com` | Sets the URL of the authentication server. |
| `traefik.frontend.auth.forward.authResponseHeaders=EXPR` | Sets the forward authentication authResponseHeaders in CSV format: `X-Auth-User,X-Auth-Header` |
| `traefik.frontend.auth.forward.tls.ca=/path/ca.pem` | Sets the Certificate Authority (CA) for the TLS connection with the authentication server. |
| `traefik.frontend.auth.forward.tls.caOptional=true` | Checks the certificates if present but do not force to be signed by a specified Certificate Authority (CA). |
| `traefik.frontend.auth.forward.tls.cert=/path/server.pem` | Sets the Certificate for the TLS connection with the authentication server. |
| `traefik.frontend.auth.forward.tls.insecureSkipVerify=true` | If set to true invalid SSL certificates are accepted. |
| `traefik.frontend.auth.forward.tls.key=/path/server.key` | Sets the Certificate for the TLS connection with the authentication server. |
| `traefik.frontend.auth.forward.trustForwardHeader=true` | Trusts X-Forwarded-* headers. |
| `traefik.frontend.auth.headerField=X-WebAuth-User` | Sets the header used to pass the authenticated user to the application. |
| `traefik.frontend.auth.removeHeader=true` | If set to true, removes the Authorization header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.commonName=true` | Add the issuer.commonName field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.country=true` | Add the issuer.country field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.domainComponent=true` | Add the issuer.domainComponent field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.locality=true` | Add the issuer.locality field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.organization=true` | Add the issuer.organization field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.province=true` | Add the issuer.province field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.serialNumber=true` | Add the issuer.serialNumber field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.notAfter=true` | Add the noAfter field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.notBefore=true` | Add the noBefore field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.sans=true` | Add the sans field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.commonName=true` | Add the subject.commonName field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.country=true` | Add the subject.country field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.domainComponent=true` | Add the subject.domainComponent field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.locality=true` | Add the subject.locality field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.organization=true` | Add the subject.organization field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.province=true` | Add the subject.province field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.serialNumber=true` | Add the subject.serialNumber field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.pem=true` | Pass the escaped pem in the `X-Forwarded-Ssl-Client-Cert` header. |
| `traefik.frontend.entryPoints=http,https` | Assigns this frontend to entry points `http` and `https`.<br>Overrides `defaultEntryPoints` |
| `traefik.frontend.errors.<name>.backend=NAME` | See [custom error pages](/configuration/commons/#custom-error-pages) section. |
| `traefik.frontend.errors.<name>.query=PATH` | See [custom error pages](/configuration/commons/#custom-error-pages) section. |
| `traefik.frontend.errors.<name>.status=RANGE` | See [custom error pages](/configuration/commons/#custom-error-pages) section. |
| `traefik.frontend.passHostHeader=true` | Forwards client `Host` header to the backend. |
| `traefik.frontend.passTLSCert=true` | Forwards TLS Client certificates to the backend. |
| `traefik.frontend.priority=10` | Overrides default frontend priority |
| `traefik.frontend.rateLimit.extractorFunc=EXP` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
| `traefik.frontend.rateLimit.rateSet.<name>.period=6` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
| `traefik.frontend.rateLimit.rateSet.<name>.average=6` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
| `traefik.frontend.rateLimit.rateSet.<name>.burst=6` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
| `traefik.frontend.redirect.entryPoint=https` | Enables Redirect to another entryPoint to this frontend (e.g. HTTPS) |
| `traefik.frontend.redirect.regex=^http://localhost/(.*)` | Redirects to another URL to this frontend.<br>Must be set with `traefik.frontend.redirect.replacement`. |
| `traefik.frontend.redirect.replacement=http://mydomain/$1` | Redirects to another URL to this frontend.<br>Must be set with `traefik.frontend.redirect.regex`. |
| `traefik.frontend.redirect.permanent=true` | Returns 301 instead of 302. |
| `traefik.frontend.rule=EXPR` | Overrides the default frontend rule. Default: `Host:{instance_name}.{domain}`. |
| `traefik.frontend.whiteList.sourceRange=RANGE` | Sets a list of IP-Ranges which are allowed to access.<br>An unset or empty list allows all Source-IPs to access. If one of the Net-Specifications are invalid, the whole list is invalid and allows all Source-IPs to access. |
| `traefik.frontend.whiteList.ipStrategy=true` | Uses the default IPStrategy.<br>Can be used when there is an existing `clientIPStrategy` but you want the remote address for whitelisting. |
| `traefik.frontend.whiteList.ipStrategy.depth=5` | See [whitelist](/configuration/entrypoints/#white-listing) |
| `traefik.frontend.whiteList.ipStrategy.excludedIPs=127.0.0.1` | See [whitelist](/configuration/entrypoints/#white-listing) |
### Custom Headers
| Label | Description |
|-------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `traefik.frontend.headers.customRequestHeaders=EXPR ` | Provides the container with custom request headers that will be appended to each request forwarded to the container.<br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
| `traefik.frontend.headers.customResponseHeaders=EXPR` | Appends the headers to each response returned by the container, before forwarding the response to the client.<br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
### Security Headers
| Label | Description |
|----------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `traefik.frontend.headers.allowedHosts=EXPR` | Provides a list of allowed hosts that requests will be processed.<br>Format: `Host1,Host2` |
| `traefik.frontend.headers.browserXSSFilter=true` | Adds the X-XSS-Protection header with the value `1; mode=block`. |
| `traefik.frontend.headers.contentSecurityPolicy=VALUE` | Adds CSP Header with the custom value. |
| `traefik.frontend.headers.contentTypeNosniff=true` | Adds the `X-Content-Type-Options` header with the value `nosniff`. |
| `traefik.frontend.headers.customBrowserXSSValue=VALUE` | Set custom value for X-XSS-Protection header. This overrides the BrowserXssFilter option. |
| `traefik.frontend.headers.customFrameOptionsValue=VALUE` | Overrides the `X-Frame-Options` header with the custom value. |
| `traefik.frontend.headers.forceSTSHeader=false` | Adds the STS header to non-SSL requests. |
| `traefik.frontend.headers.frameDeny=false` | Adds the `X-Frame-Options` header with the value of `DENY`. |
| `traefik.frontend.headers.hostsProxyHeaders=EXPR ` | Provides a list of headers that the proxied hostname may be stored.<br>Format: `HEADER1,HEADER2` |
| `traefik.frontend.headers.publicKey=VALUE` | Adds HPKP header. |
| `traefik.frontend.headers.referrerPolicy=VALUE` | Adds referrer policy header. |
| `traefik.frontend.headers.isDevelopment=false` | This will cause the `AllowedHosts`, `SSLRedirect`, and `STSSeconds`/`STSIncludeSubdomains` options to be ignored during development.<br>When deploying to production, be sure to set this to false. |
| `traefik.frontend.headers.SSLRedirect=true` | Forces the frontend to redirect to SSL if a non-SSL request is sent. |
| `traefik.frontend.headers.SSLTemporaryRedirect=true` | Forces the frontend to redirect to SSL if a non-SSL request is sent, but by sending a 302 instead of a 301. |
| `traefik.frontend.headers.SSLHost=HOST` | This setting configures the hostname that redirects will be based on. Default is "", which is the same host as the request. |
| `traefik.frontend.headers.SSLForceHost=true` | If `SSLForceHost` is `true` and `SSLHost` is set, requests will be forced to use `SSLHost` even the ones that are already using SSL. Default is false. |
| `traefik.frontend.headers.SSLProxyHeaders=EXPR` | Header combinations that would signify a proper SSL Request (Such as `X-Forwarded-For:https`).<br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
| `traefik.frontend.headers.STSSeconds=315360000` | Sets the max-age of the STS header. |
| `traefik.frontend.headers.STSIncludeSubdomains=true` | Adds the `IncludeSubdomains` section of the STS header. |
| `traefik.frontend.headers.STSPreload=true` | Adds the preload flag to the STS header. |
### Containers with Multiple Ports (segment labels)
Segment labels are used to define routes to an application exposing multiple ports.
A segment is a group of labels that apply to a port exposed by an application.
You can define as many segments as ports exposed in an application.
Segment labels override the default behavior.
| Label | Description |
|----------------------------------------------------------------------------------------|----------------------------------------------------------------------------|
| `traefik.<segment_name>.backend=BACKEND` | Same as `traefik.backend` |
| `traefik.<segment_name>.domain=DOMAIN` | Same as `traefik.domain` |
| `traefik.<segment_name>.port=PORT` | Same as `traefik.port` |
| `traefik.<segment_name>.protocol=http` | Same as `traefik.protocol` |
| `traefik.<segment_name>.weight=10` | Same as `traefik.weight` |
| `traefik.<segment_name>.frontend.auth.basic=EXPR` | Same as `traefik.frontend.auth.basic` |
| `traefik.<segment_name>.frontend.auth.basic.removeHeader=true` | Same as `traefik.frontend.auth.basic.removeHeader` |
| `traefik.<segment_name>.frontend.auth.basic.users=EXPR` | Same as `traefik.frontend.auth.basic.users` |
| `traefik.<segment_name>.frontend.auth.basic.usersFile=/path/.htpasswd` | Same as `traefik.frontend.auth.basic.usersFile` |
| `traefik.<segment_name>.frontend.auth.digest.removeHeader=true` | Same as `traefik.frontend.auth.digest.removeHeader` |
| `traefik.<segment_name>.frontend.auth.digest.users=EXPR` | Same as `traefik.frontend.auth.digest.users` |
| `traefik.<segment_name>.frontend.auth.digest.usersFile=/path/.htdigest` | Same as `traefik.frontend.auth.digest.usersFile` |
| `traefik.<segment_name>.frontend.auth.forward.address=https://example.com` | Same as `traefik.frontend.auth.forward.address` |
| `traefik.<segment_name>.frontend.auth.forward.authResponseHeaders=EXPR` | Same as `traefik.frontend.auth.forward.authResponseHeaders` |
| `traefik.<segment_name>.frontend.auth.forward.tls.ca=/path/ca.pem` | Same as `traefik.frontend.auth.forward.tls.ca` |
| `traefik.<segment_name>.frontend.auth.forward.tls.caOptional=true` | Same as `traefik.frontend.auth.forward.tls.caOptional` |
| `traefik.<segment_name>.frontend.auth.forward.tls.cert=/path/server.pem` | Same as `traefik.frontend.auth.forward.tls.cert` |
| `traefik.<segment_name>.frontend.auth.forward.tls.insecureSkipVerify=true` | Same as `traefik.frontend.auth.forward.tls.insecureSkipVerify` |
| `traefik.<segment_name>.frontend.auth.forward.tls.key=/path/server.key` | Same as `traefik.frontend.auth.forward.tls.key` |
| `traefik.<segment_name>.frontend.auth.forward.trustForwardHeader=true` | Same as `traefik.frontend.auth.forward.trustForwardHeader` |
| `traefik.<segment_name>.frontend.auth.headerField=X-WebAuth-User` | Same as `traefik.frontend.auth.headerField` |
| `traefik.<segment_name>.frontend.auth.removeHeader=true` | Same as `traefik.frontend.auth.removeHeader` |
| `traefik.<segment_name>.frontend.entryPoints=https` | Same as `traefik.frontend.entryPoints` |
| `traefik.<segment_name>.frontend.errors.<name>.backend=NAME` | Same as `traefik.frontend.errors.<name>.backend` |
| `traefik.<segment_name>.frontend.errors.<name>.query=PATH` | Same as `traefik.frontend.errors.<name>.query` |
| `traefik.<segment_name>.frontend.errors.<name>.status=RANGE` | Same as `traefik.frontend.errors.<name>.status` |
| `traefik.<segment_name>.frontend.passHostHeader=true` | Same as `traefik.frontend.passHostHeader` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.issuer.commonName=true` | Same as `traefik.frontend.passTLSClientCert.infos.issuer.commonName` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.issuer.country=true` | Same as `traefik.frontend.passTLSClientCert.infos.issuer.country` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.issuer.domainComponent=true` | Same as `traefik.frontend.passTLSClientCert.infos.issuer.domainComponent` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.issuer.locality=true` | Same as `traefik.frontend.passTLSClientCert.infos.issuer.locality` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.issuer.organization=true` | Same as `traefik.frontend.passTLSClientCert.infos.issuer.organization` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.issuer.province=true` | Same as `traefik.frontend.passTLSClientCert.infos.issuer.province` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.issuer.serialNumber=true` | Same as `traefik.frontend.passTLSClientCert.infos.issuer.serialNumber` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.notAfter=true` | Same as `traefik.frontend.passTLSClientCert.infos.notAfter` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.notBefore=true` | Same as `traefik.frontend.passTLSClientCert.infos.notBefore` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.sans=true` | Same as `traefik.frontend.passTLSClientCert.infos.sans` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.commonName=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.commonName` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.country=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.country` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.domainComponent=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.domainComponent` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.locality=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.locality` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.organization=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.organization` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.province=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.province` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.serialNumber=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.serialNumber` |
| `traefik.<segment_name>.frontend.passTLSClientCert.pem=true` | Same as `traefik.frontend.passTLSClientCert.infos.pem` |
| `traefik.<segment_name>.frontend.passTLSCert=true` | Same as `traefik.frontend.passTLSCert` |
| `traefik.<segment_name>.frontend.priority=10` | Same as `traefik.frontend.priority` |
| `traefik.<segment_name>.frontend.rateLimit.extractorFunc=EXP` | Same as `traefik.frontend.rateLimit.extractorFunc` |
| `traefik.<segment_name>.frontend.rateLimit.rateSet.<name>.period=6` | Same as `traefik.frontend.rateLimit.rateSet.<name>.period` |
| `traefik.<segment_name>.frontend.rateLimit.rateSet.<name>.average=6` | Same as `traefik.frontend.rateLimit.rateSet.<name>.average` |
| `traefik.<segment_name>.frontend.rateLimit.rateSet.<name>.burst=6` | Same as `traefik.frontend.rateLimit.rateSet.<name>.burst` |
| `traefik.<segment_name>.frontend.redirect.entryPoint=https` | Same as `traefik.frontend.redirect.entryPoint` |
| `traefik.<segment_name>.frontend.redirect.regex=^http://localhost/(.*)` | Same as `traefik.frontend.redirect.regex` |
| `traefik.<segment_name>.frontend.redirect.replacement=http://mydomain/$1` | Same as `traefik.frontend.redirect.replacement` |
| `traefik.<segment_name>.frontend.redirect.permanent=true` | Same as `traefik.frontend.redirect.permanent` |
| `traefik.<segment_name>.frontend.rule=EXP` | Same as `traefik.frontend.rule` |
| `traefik.<segment_name>.frontend.whiteList.sourceRange=RANGE` | Same as `traefik.frontend.whiteList.sourceRange` |
| `traefik.<segment_name>.frontend.whiteList.useXForwardedFor=true` | Same as `traefik.frontend.whiteList.useXForwardedFor` |
| `traefik.<segment_name>.frontend.whiteList.ipStrategy=true` | Same as `traefik.frontend.whiteList.ipStrategy` |
| `traefik.<segment_name>.frontend.whiteList.ipStrategy.depth=5` | Same as `traefik.frontend.whiteList.ipStrategy.depth` |
| `traefik.<segment_name>.frontend.whiteList.ipStrategy.excludedIPs=127.0.0.1` | Same as `traefik.frontend.whiteList.ipStrategy.excludedIPs` |
#### Custom Headers
| Label | Description |
|----------------------------------------------------------------------|----------------------------------------------------------|
| `traefik.<segment_name>.frontend.headers.customRequestHeaders=EXPR ` | Same as `traefik.frontend.headers.customRequestHeaders` |
| `traefik.<segment_name>.frontend.headers.customResponseHeaders=EXPR` | Same as `traefik.frontend.headers.customResponseHeaders` |
#### Security Headers
| Label | Description |
|-------------------------------------------------------------------------|--------------------------------------------------------------|
| `traefik.<segment_name>.frontend.headers.allowedHosts=EXPR` | Same as `traefik.frontend.headers.allowedHosts` |
| `traefik.<segment_name>.frontend.headers.browserXSSFilter=true` | Same as `traefik.frontend.headers.browserXSSFilter` |
| `traefik.<segment_name>.frontend.headers.contentSecurityPolicy=VALUE` | Same as `traefik.frontend.headers.contentSecurityPolicy` |
| `traefik.<segment_name>.frontend.headers.contentTypeNosniff=true` | Same as `traefik.frontend.headers.contentTypeNosniff` |
| `traefik.<segment_name>.frontend.headers.customBrowserXSSValue=VALUE` | Same as `traefik.frontend.headers.customBrowserXSSValue` |
| `traefik.<segment_name>.frontend.headers.customFrameOptionsValue=VALUE` | Same as `traefik.frontend.headers.customFrameOptionsValue` |
| `traefik.<segment_name>.frontend.headers.forceSTSHeader=false` | Same as `traefik.frontend.headers.forceSTSHeader` |
| `traefik.<segment_name>.frontend.headers.frameDeny=false` | Same as `traefik.frontend.headers.frameDeny` |
| `traefik.<segment_name>.frontend.headers.hostsProxyHeaders=EXPR` | Same as `traefik.frontend.headers.hostsProxyHeaders` |
| `traefik.<segment_name>.frontend.headers.isDevelopment=false` | Same as `traefik.frontend.headers.isDevelopment` |
| `traefik.<segment_name>.frontend.headers.publicKey=VALUE` | Same as `traefik.frontend.headers.publicKey` |
| `traefik.<segment_name>.frontend.headers.referrerPolicy=VALUE` | Same as `traefik.frontend.headers.referrerPolicy` |
| `traefik.<segment_name>.frontend.headers.SSLRedirect=true` | Same as `traefik.frontend.headers.SSLRedirect` |
| `traefik.<segment_name>.frontend.headers.SSLTemporaryRedirect=true` | Same as `traefik.frontend.headers.SSLTemporaryRedirect` |
| `traefik.<segment_name>.frontend.headers.SSLHost=HOST` | Same as `traefik.frontend.headers.SSLHost` |
| `traefik.<segment_name>.frontend.headers.SSLForceHost=true` | Same as `traefik.frontend.headers.SSLForceHost` |
| `traefik.<segment_name>.frontend.headers.SSLProxyHeaders=EXPR` | Same as `traefik.frontend.headers.SSLProxyHeaders=EXPR` |
| `traefik.<segment_name>.frontend.headers.STSSeconds=315360000` | Same as `traefik.frontend.headers.STSSeconds=315360000` |
| `traefik.<segment_name>.frontend.headers.STSIncludeSubdomains=true` | Same as `traefik.frontend.headers.STSIncludeSubdomains=true` |
| `traefik.<segment_name>.frontend.headers.STSPreload=true` | Same as `traefik.frontend.headers.STSPreload=true` |

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# Etcd Provider
Traefik can be configured to use Etcd as a provider.
```toml
################################################################
# Etcd Provider
################################################################
# Enable Etcd Provider.
[etcd]
# Etcd server endpoint.
#
# Required
# Default: "127.0.0.1:2379"
#
endpoint = "127.0.0.1:2379"
# Enable watch Etcd changes.
#
# Optional
# Default: true
#
watch = true
# Prefix used for KV store.
#
# Optional
# Default: "/traefik"
#
prefix = "/traefik"
# Override default configuration template.
# For advanced users :)
#
# Optional
#
# filename = "etcd.tmpl"
# Use etcd user/pass authentication.
#
# Optional
#
# username = foo
# password = bar
# Enable etcd TLS connection.
#
# Optional
#
# [etcd.tls]
# ca = "/etc/ssl/ca.crt"
# cert = "/etc/ssl/etcd.crt"
# key = "/etc/ssl/etcd.key"
# insecureSkipVerify = true
```
To enable constraints see [provider-specific constraints section](/configuration/commons/#provider-specific).
Please refer to the [Key Value storage structure](/user-guide/kv-config/#key-value-storage-structure) section to get documentation on Traefik KV structure.

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# Eureka Provider
Traefik can be configured to use Eureka as a provider.
```toml
################################################################
# Eureka Provider
################################################################
# Enable Eureka Provider.
[eureka]
# Eureka server endpoint.
#
# Required
#
endpoint = "http://my.eureka.server/eureka"
# Override default configuration time between refresh.
#
# Optional
# Default: 30s
#
refreshSeconds = "1m"
# Override default configuration template.
# For advanced users :)
#
# Optional
#
# filename = "eureka.tmpl"
```

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# File Provider
Traefik can be configured with a file.
## Reference
```toml
[file]
# Backends
[backends]
[backends.backend1]
[backends.backend1.servers]
[backends.backend1.servers.server0]
url = "http://10.10.10.1:80"
weight = 1
[backends.backend1.servers.server1]
url = "http://10.10.10.2:80"
weight = 2
# ...
[backends.backend1.circuitBreaker]
expression = "NetworkErrorRatio() > 0.5"
[backends.backend1.responseForwarding]
flushInterval = "10ms"
[backends.backend1.loadBalancer]
method = "drr"
[backends.backend1.loadBalancer.stickiness]
cookieName = "foobar"
[backends.backend1.maxConn]
amount = 10
extractorfunc = "request.host"
[backends.backend1.healthCheck]
path = "/health"
port = 88
interval = "30s"
timeout = "5s"
scheme = "http"
hostname = "myhost.com"
[backends.backend1.healthcheck.headers]
My-Custom-Header = "foo"
My-Header = "bar"
[backends.backend2]
# ...
# Frontends
[frontends]
[frontends.frontend1]
entryPoints = ["http", "https"]
backend = "backend1"
passHostHeader = true
priority = 42
[frontends.frontend1.passTLSClientCert]
pem = true
[frontends.frontend1.passTLSClientCert.infos]
notBefore = true
notAfter = true
[frontends.frontend1.passTLSClientCert.infos.subject]
country = true
domainComponent = true
province = true
locality = true
organization = true
commonName = true
serialNumber = true
[frontends.frontend1.passTLSClientCert.infos.issuer]
country = true
domainComponent = true
province = true
locality = true
organization = true
commonName = true
serialNumber = true
[frontends.frontend1.auth]
headerField = "X-WebAuth-User"
[frontends.frontend1.auth.basic]
removeHeader = true
users = [
"test:$apr1$H6uskkkW$IgXLP6ewTrSuBkTrqE8wj/",
"test2:$apr1$d9hr9HBB$4HxwgUir3HP4EsggP/QNo0",
]
usersFile = "/path/to/.htpasswd"
[frontends.frontend1.auth.digest]
removeHeader = true
users = [
"test:traefik:a2688e031edb4be6a3797f3882655c05",
"test2:traefik:518845800f9e2bfb1f1f740ec24f074e",
]
usersFile = "/path/to/.htdigest"
[frontends.frontend1.auth.forward]
address = "https://authserver.com/auth"
trustForwardHeader = true
authResponseHeaders = ["X-Auth-User"]
[frontends.frontend1.auth.forward.tls]
ca = "path/to/local.crt"
caOptional = true
cert = "path/to/foo.cert"
key = "path/to/foo.key"
insecureSkipVerify = true
[frontends.frontend1.whiteList]
sourceRange = ["10.42.0.0/16", "152.89.1.33/32", "afed:be44::/16"]
[frontends.frontend1.whiteList.IPStrategy]
depth = 6
excludedIPs = ["152.89.1.33/32", "afed:be44::/16"]
[frontends.frontend1.routes]
[frontends.frontend1.routes.route0]
rule = "Host:test.localhost"
[frontends.frontend1.routes.Route1]
rule = "Method:GET"
# ...
[frontends.frontend1.headers]
allowedHosts = ["foobar", "foobar"]
hostsProxyHeaders = ["foobar", "foobar"]
SSLRedirect = true
SSLTemporaryRedirect = true
SSLHost = "foobar"
STSSeconds = 42
STSIncludeSubdomains = true
STSPreload = true
forceSTSHeader = true
frameDeny = true
customFrameOptionsValue = "foobar"
contentTypeNosniff = true
browserXSSFilter = true
contentSecurityPolicy = "foobar"
publicKey = "foobar"
referrerPolicy = "foobar"
isDevelopment = true
[frontends.frontend1.headers.customRequestHeaders]
X-Foo-Bar-01 = "foobar"
X-Foo-Bar-02 = "foobar"
# ...
[frontends.frontend1.headers.customResponseHeaders]
X-Foo-Bar-03 = "foobar"
X-Foo-Bar-04 = "foobar"
# ...
[frontends.frontend1.headers.SSLProxyHeaders]
X-Foo-Bar-05 = "foobar"
X-Foo-Bar-06 = "foobar"
# ...
[frontends.frontend1.errors]
[frontends.frontend1.errors.errorPage0]
status = ["500-599"]
backend = "error"
query = "/{status}.html"
[frontends.frontend1.errors.errorPage1]
status = ["404", "403"]
backend = "error"
query = "/{status}.html"
# ...
[frontends.frontend1.ratelimit]
extractorfunc = "client.ip"
[frontends.frontend1.ratelimit.rateset.rateset1]
period = "10s"
average = 100
burst = 200
[frontends.frontend1.ratelimit.rateset.rateset2]
period = "3s"
average = 5
burst = 10
# ...
[frontends.frontend1.redirect]
entryPoint = "https"
regex = "^http://localhost/(.*)"
replacement = "http://mydomain/$1"
permanent = true
[frontends.frontend2]
# ...
# HTTPS certificates
[[tls]]
entryPoints = ["https"]
[tls.certificate]
certFile = "path/to/my.cert"
keyFile = "path/to/my.key"
[[tls]]
# ...
```
## Configuration Mode
You have two choices:
- [Rules in Traefik configuration file](/configuration/backends/file/#rules-in-traefik-configuration-file)
- [Rules in dedicated files](/configuration/backends/file/#rules-in-dedicated-files)
To enable the file backend, you must either pass the `--file` option to the Traefik binary or put the `[file]` section (with or without inner settings) in the configuration file.
The configuration file allows managing both backends/frontends and HTTPS certificates (which are not [Let's Encrypt](https://letsencrypt.org) certificates generated through Traefik).
TOML templating can be used if rules are not defined in the Traefik configuration file.
### Rules in Traefik Configuration File
Add your configuration at the end of the global configuration file `traefik.toml`:
```toml
defaultEntryPoints = ["http", "https"]
[entryPoints]
[entryPoints.http]
# ...
[entryPoints.https]
# ...
[file]
# rules
[backends]
[backends.backend1]
# ...
[backends.backend2]
# ...
[frontends]
[frontends.frontend1]
# ...
[frontends.frontend2]
# ...
[frontends.frontend3]
# ...
# HTTPS certificate
[[tls]]
# ...
[[tls]]
# ...
```
!!! note
If `tls.entryPoints` is not defined, the certificate is attached to all the `defaultEntryPoints` with a TLS configuration.
!!! note
Adding certificates directly to the entryPoint is still maintained but certificates declared in this way cannot be managed dynamically.
It's recommended to use the file provider to declare certificates.
!!! warning
TOML templating cannot be used if rules are defined in the Traefik configuration file.
### Rules in Dedicated Files
Traefik allows defining rules in one or more separate files.
#### One Separate File
You have to specify the file path in the `file.filename` option.
```toml
# traefik.toml
defaultEntryPoints = ["http", "https"]
[entryPoints]
[entryPoints.http]
# ...
[entryPoints.https]
# ...
[file]
filename = "rules.toml"
watch = true
```
The option `file.watch` allows Traefik to watch file changes automatically.
#### Multiple Separated Files
You could have multiple `.toml` files in a directory (and recursively in its sub-directories):
```toml
[file]
directory = "/path/to/config/"
watch = true
```
The option `file.watch` allows Traefik to watch file changes automatically.
#### Separate Files Content
If you are defining rules in one or more separate files, you can use two formats.
##### Simple Format
Backends, Frontends and TLS certificates are defined one at time, as described in the file `rules.toml`:
```toml
# rules.toml
[backends]
[backends.backend1]
# ...
[backends.backend2]
# ...
[frontends]
[frontends.frontend1]
# ...
[frontends.frontend2]
# ...
[frontends.frontend3]
# ...
# HTTPS certificate
[[tls]]
# ...
[[tls]]
# ...
```
##### TOML Templating
!!! warning
TOML templating can only be used **if rules are defined in one or more separate files**.
Templating will not work in the Traefik configuration file.
Traefik allows using TOML templating.
Thus, it's possible to define easily lot of Backends, Frontends and TLS certificates as described in the file `template-rules.toml` :
```toml
# template-rules.toml
[backends]
{{ range $i, $e := until 100 }}
[backends.backend{{ $e }}]
#...
{{ end }}
[frontends]
{{ range $i, $e := until 100 }}
[frontends.frontend{{ $e }}]
#...
{{ end }}
# HTTPS certificate
{{ range $i, $e := until 100 }}
[[tls]]
#...
{{ end }}
```

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# Kubernetes Ingress Provider
Traefik can be configured to use Kubernetes Ingress as a provider.
See also [Kubernetes user guide](/user-guide/kubernetes).
## Configuration
```toml
################################################################
# Kubernetes Ingress Provider
################################################################
# Enable Kubernetes Ingress Provider.
[kubernetes]
# Kubernetes server endpoint.
#
# Optional for in-cluster configuration, required otherwise.
# Default: empty
#
# endpoint = "http://localhost:8080"
# Bearer token used for the Kubernetes client configuration.
#
# Optional
# Default: empty
#
# token = "my token"
# Path to the certificate authority file.
# Used for the Kubernetes client configuration.
#
# Optional
# Default: empty
#
# certAuthFilePath = "/my/ca.crt"
# Array of namespaces to watch.
#
# Optional
# Default: all namespaces (empty array).
#
# namespaces = ["default", "production"]
# Ingress label selector to filter Ingress objects that should be processed.
#
# Optional
# Default: empty (process all Ingresses)
#
# labelselector = "A and not B"
# Value of `kubernetes.io/ingress.class` annotation that identifies Ingress objects to be processed.
# If the parameter is non-empty, only Ingresses containing an annotation with the same value are processed.
# Otherwise, Ingresses missing the annotation, having an empty value, or the value `traefik` are processed.
#
# Optional
# Default: empty
#
# ingressClass = "traefik-internal"
# Disable PassHost Headers.
#
# Optional
# Default: false
#
# disablePassHostHeaders = true
# Enable PassTLSCert Headers.
#
# Optional
# Default: false
#
# enablePassTLSCert = true
# Override default configuration template.
#
# Optional
# Default: <built-in template>
#
# filename = "kubernetes.tmpl"
# Enable IngressEndpoint configuration.
# This will allow Traefik to update the status section of ingress objects, if desired.
#
# Optional
#
# [kubernetes.ingressEndpoint]
#
# At least one must be configured.
# `publishedservice` will override the `hostname` and `ip` settings if configured.
#
# hostname = "localhost"
# ip = "127.0.0.1"
# publishedService = "namespace/servicename"
```
### `endpoint`
The Kubernetes server endpoint as URL.
When deployed into Kubernetes, Traefik will read the environment variables `KUBERNETES_SERVICE_HOST` and `KUBERNETES_SERVICE_PORT` to construct the endpoint.
The access token will be looked up in `/var/run/secrets/kubernetes.io/serviceaccount/token` and the SSL CA certificate in `/var/run/secrets/kubernetes.io/serviceaccount/ca.crt`.
Both are provided mounted automatically when deployed inside Kubernetes.
The endpoint may be specified to override the environment variable values inside a cluster.
When the environment variables are not found, Traefik will try to connect to the Kubernetes API server with an external-cluster client.
In this case, the endpoint is required.
Specifically, it may be set to the URL used by `kubectl proxy` to connect to a Kubernetes cluster using the granted authentication and authorization of the associated kubeconfig.
### `labelselector`
By default, Traefik processes all Ingress objects in the configured namespaces.
A label selector can be defined to filter on specific Ingress objects only.
See [label-selectors](https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/#label-selectors) for details.
### `ingressEndpoint`
You can configure a static hostname or IP address that Traefik will add to the status section of Ingress objects that it manages.
If you prefer, you can provide a service, which traefik will copy the status spec from.
This will give more flexibility in cloud/dynamic environments.
### TLS communication between Traefik and backend pods
Traefik automatically requests endpoint information based on the service provided in the ingress spec.
Although traefik will connect directly to the endpoints (pods), it still checks the service port to see if TLS communication is required.
There are 3 ways to configure Traefik to use https to communicate with backend pods:
1. If the service port defined in the ingress spec is 443 (note that you can still use `targetPort` to use a different port on your pod).
2. If the service port defined in the ingress spec has a name that starts with `https` (such as `https-api`, `https-web` or just `https`).
3. If the ingress spec includes the annotation `ingress.kubernetes.io/protocol: https`.
If either of those configuration options exist, then the backend communication protocol is assumed to be TLS, and will connect via TLS automatically.
!!! note
Please note that by enabling TLS communication between traefik and your pods, you will have to have trusted certificates that have the proper trust chain and IP subject name.
If this is not an option, you may need to skip TLS certificate verification.
See the [insecureSkipVerify](/configuration/commons/#main-section) setting for more details.
## Annotations
### General annotations
The following general annotations are applicable on the Ingress object:
| Annotation | Description |
|---------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `traefik.ingress.kubernetes.io/app-root: "/index.html"` | Redirects all requests for `/` to the defined path. (1) |
| `traefik.ingress.kubernetes.io/error-pages: <YML>` | See [custom error pages](/configuration/commons/#custom-error-pages) section. (2) |
| `traefik.ingress.kubernetes.io/frontend-entry-points: http,https` | Override the default frontend endpoints. |
| `traefik.ingress.kubernetes.io/pass-client-tls-cert: <YML>` | Forward the client certificate following the configuration in YAML. (3) |
| `traefik.ingress.kubernetes.io/pass-tls-cert: "true"` | Override the default frontend PassTLSCert value. Default: `false`.(DEPRECATED) |
| `traefik.ingress.kubernetes.io/preserve-host: "true"` | Forward client `Host` header to the backend. |
| `traefik.ingress.kubernetes.io/priority: "3"` | Override the default frontend rule priority. |
| `traefik.ingress.kubernetes.io/rate-limit: <YML>` | See [rate limiting](/configuration/commons/#rate-limiting) section. (4) |
| `traefik.ingress.kubernetes.io/redirect-entry-point: https` | Enables Redirect to another entryPoint for that frontend (e.g. HTTPS). |
| `traefik.ingress.kubernetes.io/redirect-permanent: "true"` | Return 301 instead of 302. |
| `traefik.ingress.kubernetes.io/redirect-regex: ^http://localhost/(.*)` | Redirect to another URL for that frontend. Must be set with `traefik.ingress.kubernetes.io/redirect-replacement`. |
| `traefik.ingress.kubernetes.io/redirect-replacement: http://mydomain/$1` | Redirect to another URL for that frontend. Must be set with `traefik.ingress.kubernetes.io/redirect-regex`. |
| `traefik.ingress.kubernetes.io/request-modifier: AddPrefix: /users` | Adds a [request modifier](/basics/#modifiers) to the backend request. |
| `traefik.ingress.kubernetes.io/rewrite-target: /users` | Replaces each matched Ingress path with the specified one, and adds the old path to the `X-Replaced-Path` header. |
| `traefik.ingress.kubernetes.io/rule-type: PathPrefixStrip` | Overrides the default frontend rule type. Only path-related matchers can be specified [(`Path`, `PathPrefix`, `PathStrip`, `PathPrefixStrip`)](/basics/#path-matcher-usage-guidelines).(5) |
| `traefik.ingress.kubernetes.io/request-modifier: AddPrefix: /users` | Add a [request modifier](/basics/#modifiers) to the backend request. |
| `traefik.ingress.kubernetes.io/service-weights: <YML>` | Set ingress backend weights specified as percentage or decimal numbers in YAML. (6) |
| `traefik.ingress.kubernetes.io/whitelist-source-range: "1.2.3.0/24, fe80::/16"` | A comma-separated list of IP ranges permitted for access (7). |
| `traefik.ingress.kubernetes.io/whiteList-ipstrategy=true` | Uses the default IPStrategy.<br>Can be used when there is an existing `clientIPStrategy` but you want the remote address for whitelisting. |
| `traefik.ingress.kubernetes.io/whiteList-ipstrategy-depth=5` | See [whitelist](/configuration/entrypoints/#white-listing) |
| `traefik.ingress.kubernetes.io/whiteList-ipstrategy-excludedIPs=127.0.0. 1` | See [whitelist](/configuration/entrypoints/#white-listing) |
| `ingress.kubernetes.io/protocol: <NAME>` | Set the protocol Traefik will use to communicate with pods. Acceptable protocols: http,https,h2c |
<1> `traefik.ingress.kubernetes.io/app-root`:
Non-root paths will not be affected by this annotation and handled normally.
This annotation may not be combined with other redirect annotations.
Trying to do so will result in the other redirects being ignored.
This annotation can be used in combination with `traefik.ingress.kubernetes.io/redirect-permanent` to configure whether the `app-root` redirect is a 301 or a 302.
<2> `traefik.ingress.kubernetes.io/error-pages` example:
```yaml
foo:
status:
- "404"
backend: bar
query: /bar
fii:
status:
- "503"
- "500"
backend: bar
query: /bir
```
<3> `traefik.ingress.kubernetes.io/pass-client-tls-cert` example:
```yaml
# add escaped pem in the `X-Forwarded-Tls-Client-Cert` header
pem: true
# add escaped certificate following infos in the `X-Forwarded-Tls-Client-Cert-Infos` header
infos:
notafter: true
notbefore: true
sans: true
subject:
country: true
province: true
locality: true
organization: true
commonname: true
serialnumber: true
```
If `pem` is set, it will add a `X-Forwarded-Tls-Client-Cert` header that contains the escaped pem as value.
If at least one flag of the `infos` part is set, it will add a `X-Forwarded-Tls-Client-Cert-Infos` header that contains an escaped string composed of the client certificate data selected by the infos flags.
This infos part is composed like the following example (not escaped):
```Subject="C=FR,ST=SomeState,L=Lyon,O=Cheese,CN=*.cheese.org",NB=1531900816,NA=1563436816,SAN=*.cheese.org,*.cheese.net,cheese.in,test@cheese.org,test@cheese.net,10.0.1.0,10.0.1.2```
<4> `traefik.ingress.kubernetes.io/rate-limit` example:
```yaml
extractorfunc: client.ip
rateset:
bar:
period: 3s
average: 6
burst: 9
foo:
period: 6s
average: 12
burst: 18
```
<5> `traefik.ingress.kubernetes.io/rule-type`
Note: `ReplacePath` is deprecated in this annotation, use the `traefik.ingress.kubernetes.io/request-modifier` annotation instead. Default: `PathPrefix`.
<6> `traefik.ingress.kubernetes.io/service-weights`:
Service weights enable to split traffic across multiple backing services in a fine-grained manner.
Example:
```yaml
service_backend1: 12.50%
service_backend2: 12.50%
service_backend3: 75 # Same as 75%, the percentage sign is optional
```
A single service backend definition may be omitted; in this case, Traefik auto-completes that service backend to 100% automatically.
Conveniently, users need not bother to compute the percentage remainder for a main service backend.
For instance, in the example above `service_backend3` does not need to be specified to be assigned 75%.
!!! note
For each service weight given, the Ingress specification must include a backend item with the corresponding `serviceName` and (if given) matching path.
Currently, 3 decimal places for the weight are supported.
An attempt to exceed the precision should be avoided as it may lead to percentage computation flaws and, in consequence, Ingress parsing errors.
For each path definition, this annotation will fail if:
- the sum of backend weights exceeds 100% or
- the sum of backend weights is less than 100% without one or more omitted backends
See also the [user guide section traffic splitting](/user-guide/kubernetes/#traffic-splitting).
<7> `traefik.ingress.kubernetes.io/whitelist-source-range`:
All source IPs are permitted if the list is empty or a single range is ill-formatted.
Please note, you may have to set `service.spec.externalTrafficPolicy` to the value `Local` to preserve the source IP of the request for filtering.
Please see [this link](https://kubernetes.io/docs/tutorials/services/source-ip/) for more information.
!!! note
Please note that `traefik.ingress.kubernetes.io/redirect-regex` and `traefik.ingress.kubernetes.io/redirect-replacement` do not have to be set if `traefik.ingress.kubernetes.io/redirect-entry-point` is defined for the redirection (they will not be used in this case).
The following annotations are applicable on the Service object associated with a particular Ingress object:
| Annotation | Description |
|--------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `traefik.ingress.kubernetes.io/buffering: <YML>` | (1) See the [buffering](/configuration/commons/#buffering) section. |
| `traefik.ingress.kubernetes.io/affinity: "true"` | Enable backend sticky sessions. |
| `traefik.ingress.kubernetes.io/circuit-breaker-expression: <expression>` | Set the circuit breaker expression for the backend. |
| `traefik.ingress.kubernetes.io/responseforwarding-flushinterval: "10ms` | Defines the interval between two flushes when forwarding response from backend to client. |
| `traefik.ingress.kubernetes.io/load-balancer-method: drr` | Override the default `wrr` load balancer algorithm. |
| `traefik.ingress.kubernetes.io/max-conn-amount: "10"` | Sets the maximum number of simultaneous connections to the backend.<br>Must be used in conjunction with the label below to take effect. |
| `traefik.ingress.kubernetes.io/max-conn-extractor-func: client.ip` | Set the function to be used against the request to determine what to limit maximum connections to the backend by.<br>Must be used in conjunction with the above label to take effect. |
| `traefik.ingress.kubernetes.io/session-cookie-name: <NAME>` | Manually set the cookie name for sticky sessions. |
<1> `traefik.ingress.kubernetes.io/buffering` example:
```yaml
maxrequestbodybytes: 10485760
memrequestbodybytes: 2097153
maxresponsebodybytes: 10485761
memresponsebodybytes: 2097152
retryexpression: IsNetworkError() && Attempts() <= 2
```
!!! note
`traefik.ingress.kubernetes.io/` and `ingress.kubernetes.io/` are supported prefixes.
### Custom Headers Annotations
| Annotation | Description |
| ------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `ingress.kubernetes.io/custom-request-headers: EXPR` | Provides the container with custom request headers that will be appended to each request forwarded to the container. Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
| `ingress.kubernetes.io/custom-response-headers: EXPR` | Appends the headers to each response returned by the container, before forwarding the response to the client. Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
### Security Headers Annotations
The following security annotations are applicable on the Ingress object:
| Annotation | Description |
| ----------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `ingress.kubernetes.io/allowed-hosts: EXPR` | Provides a list of allowed hosts that requests will be processed. Format: `Host1,Host2` |
| `ingress.kubernetes.io/browser-xss-filter: "true"` | Adds the X-XSS-Protection header with the value `1; mode=block`. |
| `ingress.kubernetes.io/content-security-policy: VALUE` | Adds CSP Header with the custom value. |
| `ingress.kubernetes.io/content-type-nosniff: "true"` | Adds the `X-Content-Type-Options` header with the value `nosniff`. |
| `ingress.kubernetes.io/custom-browser-xss-value: VALUE` | Set custom value for X-XSS-Protection header. This overrides the BrowserXssFilter option. |
| `ingress.kubernetes.io/custom-frame-options-value: VALUE` | Overrides the `X-Frame-Options` header with the custom value. |
| `ingress.kubernetes.io/force-hsts: "false"` | Adds the STS header to non-SSL requests. |
| `ingress.kubernetes.io/frame-deny: "true"` | Adds the `X-Frame-Options` header with the value of `DENY`. |
| `ingress.kubernetes.io/hsts-max-age: "315360000"` | Sets the max-age of the HSTS header. |
| `ingress.kubernetes.io/hsts-include-subdomains: "true"` | Adds the IncludeSubdomains section of the STS header. |
| `ingress.kubernetes.io/hsts-preload: "true"` | Adds the preload flag to the HSTS header. |
| `ingress.kubernetes.io/is-development: "false"` | This will cause the `AllowedHosts`, `SSLRedirect`, and `STSSeconds`/`STSIncludeSubdomains` options to be ignored during development.<br>When deploying to production, be sure to set this to false. |
| `ingress.kubernetes.io/proxy-headers: EXPR` | Provides a list of headers that the proxied hostname may be stored. Format: `HEADER1,HEADER2` |
| `ingress.kubernetes.io/public-key: VALUE` | Adds HPKP header. |
| `ingress.kubernetes.io/referrer-policy: VALUE` | Adds referrer policy header. |
| `ingress.kubernetes.io/ssl-redirect: "true"` | Forces the frontend to redirect to SSL if a non-SSL request is sent. |
| `ingress.kubernetes.io/ssl-temporary-redirect: "true"` | Forces the frontend to redirect to SSL if a non-SSL request is sent, but by sending a 302 instead of a 301. |
| `ingress.kubernetes.io/ssl-host: HOST` | This setting configures the hostname that redirects will be based on. Default is "", which is the same host as the request. |
| `ingress.kubernetes.io/ssl-force-host: "true"` | If `SSLForceHost` is `true` and `SSLHost` is set, requests will be forced to use `SSLHost` even the ones that are already using SSL. Default is false. |
| `ingress.kubernetes.io/ssl-proxy-headers: EXPR` | Header combinations that would signify a proper SSL Request (Such as `X-Forwarded-For:https`). Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
### Authentication
Additional authentication annotations can be added to the Ingress object.
The source of the authentication is a Secret object that contains the credentials.
| Annotation | basic | digest | forward | Description |
|----------------------------------------------------------------------|-------|--------|---------|-------------------------------------------------------------------------------------------------------------|
| `ingress.kubernetes.io/auth-type: basic` | x | x | x | Contains the authentication type: `basic`, `digest`, `forward`. |
| `ingress.kubernetes.io/auth-secret: mysecret` | x | x | | Name of Secret containing the username and password with access to the paths defined in the Ingress object. |
| `ingress.kubernetes.io/auth-remove-header: true` | x | x | | If set to `true` removes the `Authorization` header. |
| `ingress.kubernetes.io/auth-header-field: X-WebAuth-User` | x | x | | Pass Authenticated user to application via headers. |
| `ingress.kubernetes.io/auth-url: https://example.com` | | | x | [The URL of the authentication server](/configuration/entrypoints/#forward-authentication). |
| `ingress.kubernetes.io/auth-trust-headers: false` | | | x | Trust `X-Forwarded-*` headers. |
| `ingress.kubernetes.io/auth-response-headers: X-Auth-User, X-Secret` | | | x | Copy headers from the authentication server to the request. |
| `ingress.kubernetes.io/auth-tls-secret: secret` | | | x | Name of Secret containing the certificate and key for the forward auth. |
| `ingress.kubernetes.io/auth-tls-insecure` | | | x | If set to `true` invalid SSL certificates are accepted. |
The secret must be created in the same namespace as the Ingress object.
The following limitations hold for basic/digest auth:
- The realm is not configurable; the only supported (and default) value is `traefik`.
- The Secret must contain a single file only.
### TLS certificates management
TLS certificates can be managed in Secrets objects.
More information are available in the [User Guide](/user-guide/kubernetes/#add-a-tls-certificate-to-the-ingress).
!!! note
Only TLS certificates provided by users can be stored in Kubernetes Secrets.
[Let's Encrypt](https://letsencrypt.org) certificates cannot be managed in Kubernets Secrets yet.
### Global Default Backend Ingresses
Ingresses can be created that look like the following:
```yaml
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: cheese
spec:
backend:
serviceName: stilton
servicePort: 80
```
This ingress follows the [Global Default Backend](https://kubernetes.io/docs/concepts/services-networking/ingress/#the-ingress-resource) property of ingresses.
This will allow users to create a "default backend" that will match all unmatched requests.
!!! note
Due to Traefik's use of priorities, you may have to set this ingress priority lower than other ingresses in your environment, to avoid this global ingress from satisfying requests that _could_ match other ingresses.
To do this, use the `traefik.ingress.kubernetes.io/priority` annotation (as seen in [General Annotations](/configuration/backends/kubernetes/#general-annotations)) on your ingresses accordingly.

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# Marathon Provider
Traefik can be configured to use Marathon as a provider.
See also [Marathon user guide](/user-guide/marathon).
## Configuration
```toml
################################################################
# Mesos/Marathon Provider
################################################################
# Enable Marathon Provider.
[marathon]
# Marathon server endpoint.
# You can also specify multiple endpoint for Marathon:
# endpoint = "http://10.241.1.71:8080,10.241.1.72:8080,10.241.1.73:8080"
#
# Required
# Default: "http://127.0.0.1:8080"
#
endpoint = "http://127.0.0.1:8080"
# Enable watch Marathon changes.
#
# Optional
# Default: true
#
watch = true
# Default base domain used for the frontend rules.
# Can be overridden by setting the "traefik.domain" label on an application.
#
# Required
#
domain = "marathon.localhost"
# Override default configuration template.
# For advanced users :)
#
# Optional
#
# filename = "marathon.tmpl"
# Override template version
# For advanced users :)
#
# Optional
# - "1": previous template version (must be used only with older custom templates, see "filename")
# - "2": current template version (must be used to force template version when "filename" is used)
#
# templateVersion = 2
# Expose Marathon apps by default in Traefik.
#
# Optional
# Default: true
#
# exposedByDefault = false
# Convert Marathon groups to subdomains.
# Default behavior: /foo/bar/myapp => foo-bar-myapp.{defaultDomain}
# with groupsAsSubDomains enabled: /foo/bar/myapp => myapp.bar.foo.{defaultDomain}
#
# Optional
# Default: false
#
# groupsAsSubDomains = true
# Enable compatibility with marathon-lb labels.
#
# Optional
# Default: false
#
# marathonLBCompatibility = true
# Enable filtering using Marathon constraints..
# If enabled, Traefik will read Marathon constraints, as defined in https://mesosphere.github.io/marathon/docs/constraints.html
# Each individual constraint will be treated as a verbatim compounded tag.
# i.e. "rack_id:CLUSTER:rack-1", with all constraint groups concatenated together using ":"
#
# Optional
# Default: false
#
# filterMarathonConstraints = true
# Enable Marathon basic authentication.
#
# Optional
#
# [marathon.basic]
# httpBasicAuthUser = "foo"
# httpBasicPassword = "bar"
# TLS client configuration. https://golang.org/pkg/crypto/tls/#Config
#
# Optional
#
# [marathon.TLS]
# CA = "/etc/ssl/ca.crt"
# Cert = "/etc/ssl/marathon.cert"
# Key = "/etc/ssl/marathon.key"
# insecureSkipVerify = true
# DCOSToken for DCOS environment.
# This will override the Authorization header.
#
# Optional
#
# dcosToken = "xxxxxx"
# Override DialerTimeout.
# Amount of time to allow the Marathon provider to wait to open a TCP connection
# to a Marathon master.
# Can be provided in a format supported by [time.ParseDuration](https://golang.org/pkg/time/#ParseDuration) or as raw
# values (digits).
# If no units are provided, the value is parsed assuming seconds.
#
# Optional
# Default: "5s"
#
# dialerTimeout = "5s"
# Override ResponseHeaderTimeout.
# Amount of time to allow the Marathon provider to wait until the first response
# header from the Marathon master is received.
# Can be provided in a format supported by [time.ParseDuration](https://golang.org/pkg/time/#ParseDuration) or as raw
# values (digits).
# If no units are provided, the value is parsed assuming seconds.
#
# Optional
# Default: "60s"
#
# responseHeaderTimeout = "60s"
# Override TLSHandshakeTimeout.
# Amount of time to allow the Marathon provider to wait until the TLS
# handshake completes.
# Can be provided in a format supported by [time.ParseDuration](https://golang.org/pkg/time/#ParseDuration) or as raw
# values (digits).
# If no units are provided, the value is parsed assuming seconds.
#
# Optional
# Default: "5s"
#
# TLSHandshakeTimeout = "5s"
# Set the TCP Keep Alive interval for the Marathon HTTP Client.
# Can be provided in a format supported by [time.ParseDuration](https://golang.org/pkg/time/#ParseDuration) or as raw
# values (digits).
# If no units are provided, the value is parsed assuming seconds.
#
# Optional
# Default: "10s"
#
# keepAlive = "10s"
# By default, a task's IP address (as returned by the Marathon API) is used as
# backend server if an IP-per-task configuration can be found; otherwise, the
# name of the host running the task is used.
# The latter behavior can be enforced by enabling this switch.
#
# Optional
# Default: false
#
# forceTaskHostname = true
# Applications may define readiness checks which are probed by Marathon during
# deployments periodically and the results exposed via the API.
# Enabling the following parameter causes Traefik to filter out tasks
# whose readiness checks have not succeeded.
# Note that the checks are only valid at deployment times.
# See the Marathon guide for details.
#
# Optional
# Default: false
#
# respectReadinessChecks = true
```
To enable constraints see [provider-specific constraints section](/configuration/commons/#provider-specific).
## Labels: overriding default behavior
Marathon labels may be used to dynamically change the routing and forwarding behavior.
They may be specified on one of two levels: Application or service.
### Application Level
The following labels can be defined on Marathon applications. They adjust the behavior for the entire application.
| Label | Description |
|---------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `traefik.domain` | Sets the default base domain used for the frontend rules. |
| `traefik.enable=false` | Disables this container in Traefik. |
| `traefik.port=80` | Registers this port. Useful when the container exposes multiples ports. |
| `traefik.portIndex=1` | Registers port by index in the application's ports array. Useful when the application exposes multiple ports. |
| `traefik.protocol=https` | Overrides the default `http` protocol. |
| `traefik.weight=10` | Assigns this weight to the container. |
| `traefik.backend=foo` | Overrides the application name by `foo` in the generated name of the backend. |
| `traefik.backend.buffering.maxRequestBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.maxResponseBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.memRequestBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.memResponseBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.retryExpression=EXPR` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.circuitbreaker.expression=EXPR` | Creates a [circuit breaker](/basics/#backends) to be used against the backend |
| `traefik.backend.responseForwarding.flushInterval=10ms` | Defines the interval between two flushes when forwarding response from backend to client. |
| `traefik.backend.healthcheck.path=/health` | Enables health check for the backend, hitting the container at `path`. |
| `traefik.backend.healthcheck.interval=5s` | Defines the health check interval. (Default: 30s) |
| `traefik.backend.healthcheck.timeout=3s` | Defines the health check request timeout. (Default: 5s) |
| `traefik.backend.healthcheck.port=8080` | Sets a different port for the health check. |
| `traefik.backend.healthcheck.scheme=http` | Overrides the server URL scheme. |
| `traefik.backend.healthcheck.hostname=foobar.com` | Defines the health check hostname. |
| `traefik.backend.healthcheck.headers=EXPR` | Defines the health check request headers <br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
| `traefik.backend.loadbalancer.method=drr` | Overrides the default `wrr` load balancer algorithm |
| `traefik.backend.loadbalancer.stickiness=true` | Enables backend sticky sessions |
| `traefik.backend.loadbalancer.stickiness.cookieName=NAME` | Sets the cookie name manually for sticky sessions |
| `traefik.backend.maxconn.amount=10` | Sets a maximum number of connections to the backend.<br>Must be used in conjunction with the below label to take effect. |
| `traefik.backend.maxconn.extractorfunc=client.ip` | Sets the function to be used against the request to determine what to limit maximum connections to the backend by.<br>Must be used in conjunction with the above label to take effect. |
| `traefik.frontend.auth.basic=EXPR` | Sets basic authentication to this frontend in CSV format: `User:Hash,User:Hash` (DEPRECATED). |
| `traefik.frontend.auth.basic.removeHeader=true` | If set to `true`, removes the `Authorization` header. |
| `traefik.frontend.auth.basic.users=EXPR` | Sets basic authentication to this frontend in CSV format: `User:Hash,User:Hash`. |
| `traefik.frontend.auth.basic.usersFile=/path/.htpasswd` | Sets basic authentication with an external file; if users and usersFile are provided, both are merged, with external file contents having precedence. |
| `traefik.frontend.auth.digest.removeHeader=true` | If set to `true`, removes the `Authorization` header. |
| `traefik.frontend.auth.digest.users=EXPR` | Sets digest authentication to this frontend in CSV format: `User:Realm:Hash,User:Realm:Hash`. |
| `traefik.frontend.auth.digest.usersFile=/path/.htdigest` | Sets digest authentication with an external file; if users and usersFile are provided, both are merged, with external file contents having precedence. |
| `traefik.frontend.auth.forward.address=https://example.com` | Sets the URL of the authentication server. |
| `traefik.frontend.auth.forward.authResponseHeaders=EXPR` | Sets the forward authentication authResponseHeaders in CSV format: `X-Auth-User,X-Auth-Header` |
| `traefik.frontend.auth.forward.tls.ca=/path/ca.pem` | Sets the Certificate Authority (CA) for the TLS connection with the authentication server. |
| `traefik.frontend.auth.forward.tls.caOptional=true` | Checks the certificates if present but do not force to be signed by a specified Certificate Authority (CA). |
| `traefik.frontend.auth.forward.tls.cert=/path/server.pem` | Sets the Certificate for the TLS connection with the authentication server. |
| `traefik.frontend.auth.forward.tls.insecureSkipVerify=true` | If set to true invalid SSL certificates are accepted. |
| `traefik.frontend.auth.forward.tls.key=/path/server.key` | Sets the Certificate for the TLS connection with the authentication server. |
| `traefik.frontend.auth.forward.trustForwardHeader=true` | Trusts X-Forwarded-* headers. |
| `traefik.frontend.auth.headerField=X-WebAuth-User` | Sets the header used to pass the authenticated user to the application. |
| `traefik.frontend.auth.removeHeader=true` | If set to true, removes the Authorization header. |
| `traefik.frontend.entryPoints=http,https` | Assigns this frontend to entry points `http` and `https`.<br>Overrides `defaultEntryPoints` |
| `traefik.frontend.errors.<name>.backend=NAME` | See [custom error pages](/configuration/commons/#custom-error-pages) section. |
| `traefik.frontend.errors.<name>.query=PATH` | See [custom error pages](/configuration/commons/#custom-error-pages) section. |
| `traefik.frontend.errors.<name>.status=RANGE` | See [custom error pages](/configuration/commons/#custom-error-pages) section. |
| `traefik.frontend.passHostHeader=true` | Forwards client `Host` header to the backend. |
| `traefik.frontend.passTLSClientCert.infos.issuer.commonName=true` | Add the issuer.commonName field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.country=true` | Add the issuer.country field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.domainComponent=true` | Add the issuer.domainComponent field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.locality=true` | Add the issuer.locality field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.organization=true` | Add the issuer.organization field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.province=true` | Add the issuer.province field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.serialNumber=true` | Add the issuer.serialNumber field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.notAfter=true` | Add the noAfter field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.notBefore=true` | Add the noBefore field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.sans=true` | Add the sans field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.commonName=true` | Add the subject.commonName field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.country=true` | Add the subject.country field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.domainComponent=true` | Add the subject.domainComponent field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.locality=true` | Add the subject.locality field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.organization=true`| Add the subject.organization field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.province=true` | Add the subject.province field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.serialNumber=true`| Add the subject.serialNumber field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.pem=true` | Pass the escaped pem in the `X-Forwarded-Ssl-Client-Cert` header. |
| `traefik.frontend.passTLSCert=true` | Forwards TLS Client certificates to the backend. |
| `traefik.frontend.priority=10` | Overrides default frontend priority |
| `traefik.frontend.rateLimit.extractorFunc=EXP` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
| `traefik.frontend.rateLimit.rateSet.<name>.period=6` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
| `traefik.frontend.rateLimit.rateSet.<name>.average=6` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
| `traefik.frontend.rateLimit.rateSet.<name>.burst=6` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
| `traefik.frontend.redirect.entryPoint=https` | Enables Redirect to another entryPoint to this frontend (e.g. HTTPS) |
| `traefik.frontend.redirect.regex=^http://localhost/(.*)` | Redirects to another URL to this frontend.<br>Must be set with `traefik.frontend.redirect.replacement`. |
| `traefik.frontend.redirect.replacement=http://mydomain/$1` | Redirects to another URL to this frontend.<br>Must be set with `traefik.frontend.redirect.regex`. |
| `traefik.frontend.redirect.permanent=true` | Returns 301 instead of 302. |
| `traefik.frontend.rule=EXPR` | Overrides the default frontend rule. Default: `Host:{sub_domain}.{domain}`. |
| `traefik.frontend.whiteList.sourceRange=RANGE` | Sets a list of IP-Ranges which are allowed to access.<br>An unset or empty list allows all Source-IPs to access. If one of the Net-Specifications are invalid, the whole list is invalid and allows all Source-IPs to access. |
| `traefik.frontend.whiteList.ipStrategy=true` | Uses the default IPStrategy.<br>Can be used when there is an existing `clientIPStrategy` but you want the remote address for whitelisting. |
| `traefik.frontend.whiteList.ipStrategy.depth=5` | See [whitelist](/configuration/entrypoints/#white-listing) |
| `traefik.frontend.whiteList.ipStrategy.excludedIPs=127.0.0.1` | See [whitelist](/configuration/entrypoints/#white-listing) |
#### Custom Headers
| Label | Description |
|-------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `traefik.frontend.headers.customRequestHeaders=EXPR ` | Provides the container with custom request headers that will be appended to each request forwarded to the container.<br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
| `traefik.frontend.headers.customResponseHeaders=EXPR` | Appends the headers to each response returned by the container, before forwarding the response to the client.<br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
|
#### Security Headers
| Label | Description |
|----------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `traefik.frontend.headers.allowedHosts=EXPR` | Provides a list of allowed hosts that requests will be processed.<br>Format: `Host1,Host2` |
| `traefik.frontend.headers.browserXSSFilter=true` | Adds the X-XSS-Protection header with the value `1; mode=block`. |
| `traefik.frontend.headers.contentSecurityPolicy=VALUE` | Adds CSP Header with the custom value. |
| `traefik.frontend.headers.contentTypeNosniff=true` | Adds the `X-Content-Type-Options` header with the value `nosniff`. |
| `traefik.frontend.headers.customBrowserXSSValue=VALUE` | Set custom value for X-XSS-Protection header. This overrides the BrowserXssFilter option. |
| `traefik.frontend.headers.customFrameOptionsValue=VALUE` | Overrides the `X-Frame-Options` header with the custom value. |
| `traefik.frontend.headers.forceSTSHeader=false` | Adds the STS header to non-SSL requests. |
| `traefik.frontend.headers.frameDeny=false` | Adds the `X-Frame-Options` header with the value of `DENY`. |
| `traefik.frontend.headers.hostsProxyHeaders=EXPR ` | Provides a list of headers that the proxied hostname may be stored.<br>Format: `HEADER1,HEADER2` |
| `traefik.frontend.headers.isDevelopment=false` | This will cause the `AllowedHosts`, `SSLRedirect`, and `STSSeconds`/`STSIncludeSubdomains` options to be ignored during development.<br>When deploying to production, be sure to set this to false. |
| `traefik.frontend.headers.publicKey=VALUE` | Adds HPKP header. |
| `traefik.frontend.headers.referrerPolicy=VALUE` | Adds referrer policy header. |
| `traefik.frontend.headers.SSLRedirect=true` | Forces the frontend to redirect to SSL if a non-SSL request is sent. |
| `traefik.frontend.headers.SSLTemporaryRedirect=true` | Forces the frontend to redirect to SSL if a non-SSL request is sent, but by sending a 302 instead of a 301. |
| `traefik.frontend.headers.SSLHost=HOST` | This setting configures the hostname that redirects will be based on. Default is "", which is the same host as the request. |
| `traefik.frontend.headers.SSLForceHost=true` | If `SSLForceHost` is `true` and `SSLHost` is set, requests will be forced to use `SSLHost` even the ones that are already using SSL. Default is false. |
| `traefik.frontend.headers.SSLProxyHeaders=EXPR` | Header combinations that would signify a proper SSL Request (Such as `X-Forwarded-For:https`).<br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
| `traefik.frontend.headers.STSSeconds=315360000` | Sets the max-age of the STS header. |
| `traefik.frontend.headers.STSIncludeSubdomains=true` | Adds the `IncludeSubdomains` section of the STS header. |
| `traefik.frontend.headers.STSPreload=true` | Adds the preload flag to the STS header. |
### Applications with Multiple Ports (segment labels)
Segment labels are used to define routes to an application exposing multiple ports.
A segment is a group of labels that apply to a port exposed by an application.
You can define as many segments as ports exposed in an application.
Segment labels override the default behavior.
| Label | Description |
|------------------------------------------------------------------------------------|--------------------------------------------------------------------------------|
| `traefik.<segment_name>.backend=BACKEND` | Same as `traefik.backend` |
| `traefik.<segment_name>.domain=DOMAIN` | Same as `traefik.domain` |
| `traefik.<segment_name>.portIndex=1` | Same as `traefik.portIndex` |
| `traefik.<segment_name>.port=PORT` | Same as `traefik.port` |
| `traefik.<segment_name>.protocol=http` | Same as `traefik.protocol` |
| `traefik.<segment_name>.weight=10` | Same as `traefik.weight` |
| `traefik.<segment_name>.frontend.auth.basic=EXPR` | Same as `traefik.frontend.auth.basic` |
| `traefik.<segment_name>.frontend.auth.basic.removeHeader=true` | Same as `traefik.frontend.auth.basic.removeHeader` |
| `traefik.<segment_name>.frontend.auth.basic.users=EXPR` | Same as `traefik.frontend.auth.basic.users` |
| `traefik.<segment_name>.frontend.auth.basic.usersFile=/path/.htpasswd` | Same as `traefik.frontend.auth.basic.usersFile` |
| `traefik.<segment_name>.frontend.auth.digest.removeHeader=true` | Same as `traefik.frontend.auth.digest.removeHeader` |
| `traefik.<segment_name>.frontend.auth.digest.users=EXPR` | Same as `traefik.frontend.auth.digest.users` |
| `traefik.<segment_name>.frontend.auth.digest.usersFile=/path/.htdigest` | Same as `traefik.frontend.auth.digest.usersFile` |
| `traefik.<segment_name>.frontend.auth.forward.address=https://example.com` | Same as `traefik.frontend.auth.forward.address` |
| `traefik.<segment_name>.frontend.auth.forward.authResponseHeaders=EXPR` | Same as `traefik.frontend.auth.forward.authResponseHeaders` |
| `traefik.<segment_name>.frontend.auth.forward.tls.ca=/path/ca.pem` | Same as `traefik.frontend.auth.forward.tls.ca` |
| `traefik.<segment_name>.frontend.auth.forward.tls.caOptional=true` | Same as `traefik.frontend.auth.forward.tls.caOptional` |
| `traefik.<segment_name>.frontend.auth.forward.tls.cert=/path/server.pem` | Same as `traefik.frontend.auth.forward.tls.cert` |
| `traefik.<segment_name>.frontend.auth.forward.tls.insecureSkipVerify=true` | Same as `traefik.frontend.auth.forward.tls.insecureSkipVerify` |
| `traefik.<segment_name>.frontend.auth.forward.tls.key=/path/server.key` | Same as `traefik.frontend.auth.forward.tls.key` |
| `traefik.<segment_name>.frontend.auth.forward.trustForwardHeader=true` | Same as `traefik.frontend.auth.forward.trustForwardHeader` |
| `traefik.<segment_name>.frontend.auth.headerField=X-WebAuth-User` | Same as `traefik.frontend.auth.headerField` |
| `traefik.<segment_name>.frontend.auth.removeHeader=true` | Same as `traefik.frontend.auth.removeHeader` |
| `traefik.<segment_name>.frontend.entryPoints=https` | Same as `traefik.frontend.entryPoints` |
| `traefik.<segment_name>.frontend.errors.<name>.backend=NAME` | Same as `traefik.frontend.errors.<name>.backend` |
| `traefik.<segment_name>.frontend.errors.<name>.query=PATH` | Same as `traefik.frontend.errors.<name>.query` |
| `traefik.<segment_name>.frontend.errors.<name>.status=RANGE` | Same as `traefik.frontend.errors.<name>.status` |
| `traefik.<segment_name>.frontend.passHostHeader=true` | Same as `traefik.frontend.passHostHeader` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.issuer.commonName=true` | Same as `traefik.frontend.passTLSClientCert.infos.issuer.commonName` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.issuer.domainComponent=true` | Same as `traefik.frontend.passTLSClientCert.infos.issuer.domainComponent` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.issuer.country=true` | Same as `traefik.frontend.passTLSClientCert.infos.issuer.country` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.issuer.locality=true` | Same as `traefik.frontend.passTLSClientCert.infos.issuer.locality` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.issuer.organization=true` | Same as `traefik.frontend.passTLSClientCert.infos.issuer.organization` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.issuer.province=true` | Same as `traefik.frontend.passTLSClientCert.infos.issuer.province` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.issuer.serialNumber=true` | Same as `traefik.frontend.passTLSClientCert.infos.issuer.serialNumber` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.notAfter=true` | Same as `traefik.frontend.passTLSClientCert.infos.notAfter` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.notBefore=true` | Same as `traefik.frontend.passTLSClientCert.infos.notBefore` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.sans=true` | Same as `traefik.frontend.passTLSClientCert.infos.sans` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.commonName=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.commonName` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.domainComponent=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.domainComponent` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.country=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.country` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.locality=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.locality` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.organization=true`| Same as `traefik.frontend.passTLSClientCert.infos.subject.organization` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.province=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.province` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.serialNumber=true`| Same as `traefik.frontend.passTLSClientCert.infos.subject.serialNumber` |
| `traefik.<segment_name>.frontend.passTLSClientCert.pem=true` | Same as `traefik.frontend.passTLSClientCert.infos.pem` |
| `traefik.<segment_name>.frontend.passTLSCert=true` | Same as `traefik.frontend.passTLSCert` |
| `traefik.<segment_name>.frontend.priority=10` | Same as `traefik.frontend.priority` |
| `traefik.<segment_name>.frontend.rateLimit.extractorFunc=EXP` | Same as `traefik.frontend.rateLimit.extractorFunc` |
| `traefik.<segment_name>.frontend.rateLimit.rateSet.<name>.period=6` | Same as `traefik.frontend.rateLimit.rateSet.<name>.period` |
| `traefik.<segment_name>.frontend.rateLimit.rateSet.<name>.average=6` | Same as `traefik.frontend.rateLimit.rateSet.<name>.average` |
| `traefik.<segment_name>.frontend.rateLimit.rateSet.<name>.burst=6` | Same as `traefik.frontend.rateLimit.rateSet.<name>.burst` |
| `traefik.<segment_name>.frontend.redirect.entryPoint=https` | Same as `traefik.frontend.redirect.entryPoint` |
| `traefik.<segment_name>.frontend.redirect.regex=^http://localhost/(.*)` | Same as `traefik.frontend.redirect.regex` |
| `traefik.<segment_name>.frontend.redirect.replacement=http://mydomain/$1` | Same as `traefik.frontend.redirect.replacement` |
| `traefik.<segment_name>.frontend.redirect.permanent=true` | Same as `traefik.frontend.redirect.permanent` |
| `traefik.<segment_name>.frontend.rule=EXP` | Same as `traefik.frontend.rule` |
| `traefik.<segment_name>.frontend.whiteList.sourceRange=RANGE` | Same as `traefik.frontend.whiteList.sourceRange` |
| `traefik.<segment_name>.frontend.whiteList.ipStrategy=true` | Same as `traefik.frontend.whiteList.ipStrategy` |
| `traefik.<segment_name>.frontend.whiteList.ipStrategy.depth=5` | Same as `traefik.frontend.whiteList.ipStrategy.depth` |
| `traefik.<segment_name>.frontend.whiteList.ipStrategy.excludedIPs=127.0.0.1` | Same as `traefik.frontend.whiteList.ipStrategy.excludedIPs` |
#### Custom Headers
| Label | Description |
|----------------------------------------------------------------------|----------------------------------------------------------|
| `traefik.<segment_name>.frontend.headers.customRequestHeaders=EXPR ` | Same as `traefik.frontend.headers.customRequestHeaders` |
| `traefik.<segment_name>.frontend.headers.customResponseHeaders=EXPR` | Same as `traefik.frontend.headers.customResponseHeaders` |
#### Security Headers
| Label | Description |
|-------------------------------------------------------------------------|--------------------------------------------------------------|
| `traefik.<segment_name>.frontend.headers.allowedHosts=EXPR` | Same as `traefik.frontend.headers.allowedHosts` |
| `traefik.<segment_name>.frontend.headers.browserXSSFilter=true` | Same as `traefik.frontend.headers.browserXSSFilter` |
| `traefik.<segment_name>.frontend.headers.contentSecurityPolicy=VALUE` | Same as `traefik.frontend.headers.contentSecurityPolicy` |
| `traefik.<segment_name>.frontend.headers.contentTypeNosniff=true` | Same as `traefik.frontend.headers.contentTypeNosniff` |
| `traefik.<segment_name>.frontend.headers.customBrowserXSSValue=VALUE` | Same as `traefik.frontend.headers.customBrowserXSSValue` |
| `traefik.<segment_name>.frontend.headers.customFrameOptionsValue=VALUE` | Same as `traefik.frontend.headers.customFrameOptionsValue` |
| `traefik.<segment_name>.frontend.headers.forceSTSHeader=false` | Same as `traefik.frontend.headers.forceSTSHeader` |
| `traefik.<segment_name>.frontend.headers.frameDeny=false` | Same as `traefik.frontend.headers.frameDeny` |
| `traefik.<segment_name>.frontend.headers.hostsProxyHeaders=EXPR` | Same as `traefik.frontend.headers.hostsProxyHeaders` |
| `traefik.<segment_name>.frontend.headers.isDevelopment=false` | Same as `traefik.frontend.headers.isDevelopment` |
| `traefik.<segment_name>.frontend.headers.publicKey=VALUE` | Same as `traefik.frontend.headers.publicKey` |
| `traefik.<segment_name>.frontend.headers.referrerPolicy=VALUE` | Same as `traefik.frontend.headers.referrerPolicy` |
| `traefik.<segment_name>.frontend.headers.SSLRedirect=true` | Same as `traefik.frontend.headers.SSLRedirect` |
| `traefik.<segment_name>.frontend.headers.SSLTemporaryRedirect=true` | Same as `traefik.frontend.headers.SSLTemporaryRedirect` |
| `traefik.<segment_name>.frontend.headers.SSLHost=HOST` | Same as `traefik.frontend.headers.SSLHost` |
| `traefik.<segment_name>.frontend.headers.SSLForceHost=true` | Same as `traefik.frontend.headers.SSLForceHost` |
| `traefik.<segment_name>.frontend.headers.SSLProxyHeaders=EXPR` | Same as `traefik.frontend.headers.SSLProxyHeaders=EXPR` |
| `traefik.<segment_name>.frontend.headers.STSSeconds=315360000` | Same as `traefik.frontend.headers.STSSeconds=315360000` |
| `traefik.<segment_name>.frontend.headers.STSIncludeSubdomains=true` | Same as `traefik.frontend.headers.STSIncludeSubdomains=true` |
| `traefik.<segment_name>.frontend.headers.STSPreload=true` | Same as `traefik.frontend.headers.STSPreload=true` |

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# Mesos Generic Provider
Traefik can be configured to use Mesos as a provider.
```toml
################################################################
# Mesos Provider
################################################################
# Enable Mesos Provider.
[mesos]
# Mesos server endpoint.
# You can also specify multiple endpoint for Mesos:
# endpoint = "192.168.35.40:5050,192.168.35.41:5050,192.168.35.42:5050"
# endpoint = "zk://192.168.35.20:2181,192.168.35.21:2181,192.168.35.22:2181/mesos"
#
# Required
# Default: "http://127.0.0.1:5050"
#
endpoint = "http://127.0.0.1:8080"
# Enable watch Mesos changes.
#
# Optional
# Default: true
#
watch = true
# Default base domain used for the frontend rules.
# Can be overridden by setting the "traefik.domain" label on an application.
#
# Required
#
domain = "mesos.localhost"
# Expose Mesos apps by default in Traefik.
#
# Optional
# Default: true
#
# exposedByDefault = false
# Override default configuration template.
# For advanced users :)
#
# Optional
#
# filename = "mesos.tmpl"
# Override template version
# For advanced users :)
#
# Optional
# - "1": previous template version (must be used only with older custom templates, see "filename")
# - "2": current template version (must be used to force template version when "filename" is used)
#
# templateVersion = 2
# TLS client configuration. https://golang.org/pkg/crypto/tls/#Config
#
# Optional
#
# [mesos.TLS]
# insecureSkipVerify = true
# Zookeeper timeout (in seconds).
#
# Optional
# Default: 30
#
# zkDetectionTimeout = 30
# Polling interval (in seconds).
#
# Optional
# Default: 30
#
# refreshSeconds = 30
# IP sources (e.g. host, docker, mesos, netinfo).
#
# Optional
#
# ipSources = "host"
# HTTP Timeout (in seconds).
#
# Optional
# Default: 30
#
# stateTimeoutSecond = "30"
# Convert groups to subdomains.
# Default behavior: /foo/bar/myapp => foo-bar-myapp.{defaultDomain}
# with groupsAsSubDomains enabled: /foo/bar/myapp => myapp.bar.foo.{defaultDomain}
#
# Optional
# Default: false
#
# groupsAsSubDomains = true
```
## Labels: overriding default behavior
The following labels can be defined on Mesos tasks. They adjust the behavior for the entire application.
| Label | Description |
|---------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `traefik.domain` | Sets the default domain for the frontend rules. |
| `traefik.enable=false` | Disables this container in Traefik. |
| `traefik.port=80` | Registers this port. Useful when the application exposes multiple ports. |
| `traefik.portName=web` | Registers port by name in the application's ports array. Useful when the application exposes multiple ports. |
| `traefik.portIndex=1` | Registers port by index in the application's ports array. Useful when the application exposes multiple ports. |
| `traefik.protocol=https` | Overrides the default `http` protocol |
| `traefik.weight=10` | Assigns this weight to the container |
| `traefik.backend=foo` | Overrides the task name by `foo` in the generated name of the backend. |
| `traefik.backend.buffering.maxRequestBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.maxResponseBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.memRequestBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.memResponseBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.retryExpression=EXPR` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.circuitbreaker.expression=EXPR` | Creates a [circuit breaker](/basics/#backends) to be used against the backend |
| `traefik.backend.responseForwarding.flushInterval=10ms` | Defines the interval between two flushes when forwarding response from backend to client. |
| `traefik.backend.healthcheck.path=/health` | Enables health check for the backend, hitting the container at `path`. |
| `traefik.backend.healthcheck.interval=5s` | Defines the health check interval. (Default: 30s) |
| `traefik.backend.healthcheck.timeout=3s` | Defines the health check request timeout. (Default: 5s) |
| `traefik.backend.healthcheck.scheme=http` | Overrides the server URL scheme. |
| `traefik.backend.healthcheck.port=8080` | Sets a different port for the health check. |
| `traefik.backend.healthcheck.hostname=foobar.com` | Defines the health check hostname. |
| `traefik.backend.healthcheck.headers=EXPR` | Defines the health check request headers <br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
| `traefik.backend.loadbalancer.method=drr` | Overrides the default `wrr` load balancer algorithm |
| `traefik.backend.loadbalancer.stickiness=true` | Enables backend sticky sessions |
| `traefik.backend.loadbalancer.stickiness.cookieName=NAME` | Sets the cookie manually name for sticky sessions |
| `traefik.backend.maxconn.amount=10` | Sets a maximum number of connections to the backend.<br>Must be used in conjunction with the below label to take effect. |
| `traefik.backend.maxconn.extractorfunc=client.ip` | Sets the function to be used against the request to determine what to limit maximum connections to the backend by.<br>Must be used in conjunction with the above label to take effect. |
| `traefik.frontend.auth.basic=EXPR` | Sets basic authentication to this frontend in CSV format: `User:Hash,User:Hash` (DEPRECATED). |
| `traefik.frontend.auth.basic.users=EXPR` | Sets basic authentication to this frontend in CSV format: `User:Hash,User:Hash`. |
| `traefik.frontend.auth.basic.removeHeader=true` | If set to `true`, removes the `Authorization` header. |
| `traefik.frontend.auth.basic.usersFile=/path/.htpasswd` | Sets basic authentication with an external file; if users and usersFile are provided, both are merged, with external file contents having precedence. |
| `traefik.frontend.auth.digest.removeHeader=true` | If set to `true`, removes the `Authorization` header. |
| `traefik.frontend.auth.digest.users=EXPR` | Sets digest authentication to this frontend in CSV format: `User:Realm:Hash,User:Realm:Hash`. |
| `traefik.frontend.auth.digest.usersFile=/path/.htdigest` | Sets digest authentication with an external file; if users and usersFile are provided, both are merged, with external file contents having precedence. |
| `traefik.frontend.auth.forward.address=https://example.com` | Sets the URL of the authentication server. |
| `traefik.frontend.auth.forward.authResponseHeaders=EXPR` | Sets the forward authentication authResponseHeaders in CSV format: `X-Auth-User,X-Auth-Header` |
| `traefik.frontend.auth.forward.tls.ca=/path/ca.pem` | Sets the Certificate Authority (CA) for the TLS connection with the authentication server. |
| `traefik.frontend.auth.forward.tls.caOptional=true` | Checks the certificates if present but do not force to be signed by a specified Certificate Authority (CA). |
| `traefik.frontend.auth.forward.tls.cert=/path/server.pem` | Sets the Certificate for the TLS connection with the authentication server. |
| `traefik.frontend.auth.forward.tls.insecureSkipVerify=true` | If set to true invalid SSL certificates are accepted. |
| `traefik.frontend.auth.forward.tls.key=/path/server.key` | Sets the Certificate for the TLS connection with the authentication server. |
| `traefik.frontend.auth.forward.trustForwardHeader=true` | Trusts X-Forwarded-* headers. |
| `traefik.frontend.auth.headerField=X-WebAuth-User` | Sets the header used to pass the authenticated user to the application. |
| `traefik.frontend.auth.removeHeader=true` | If set to true, removes the Authorization header. |
| `traefik.frontend.entryPoints=http,https` | Assigns this frontend to entry points `http` and `https`.<br>Overrides `defaultEntryPoints` |
| `traefik.frontend.errors.<name>.backend=NAME` | See [custom error pages](/configuration/commons/#custom-error-pages) section. |
| `traefik.frontend.errors.<name>.query=PATH` | See [custom error pages](/configuration/commons/#custom-error-pages) section. |
| `traefik.frontend.errors.<name>.status=RANGE` | See [custom error pages](/configuration/commons/#custom-error-pages) section. |
| `traefik.frontend.passHostHeader=true` | Forwards client `Host` header to the backend. |
| `traefik.frontend.passTLSClientCert.infos.issuer.commonName=true` | Add the issuer.commonName field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.country=true` | Add the issuer.country field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.domainComponent=true` | Add the issuer.domainComponent field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.locality=true` | Add the issuer.locality field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.organization=true` | Add the issuer.organization field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.province=true` | Add the issuer.province field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.serialNumber=true` | Add the issuer.serialNumber field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.notAfter=true` | Add the noAfter field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.notBefore=true` | Add the noBefore field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.sans=true` | Add the sans field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.commonName=true` | Add the subject.commonName field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.country=true` | Add the subject.country field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.domainComponent=true` | Add the subject.domainComponent field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.locality=true` | Add the subject.locality field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.organization=true`| Add the subject.organization field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.province=true` | Add the subject.province field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.serialNumber=true`| Add the subject.serialNumber field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.pem=true` | Pass the escaped pem in the `X-Forwarded-Ssl-Client-Cert` header. |
| `traefik.frontend.passTLSCert=true` | Forwards TLS Client certificates to the backend. |
| `traefik.frontend.priority=10` | Overrides default frontend priority |
| `traefik.frontend.rateLimit.extractorFunc=EXP` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
| `traefik.frontend.rateLimit.rateSet.<name>.period=6` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
| `traefik.frontend.rateLimit.rateSet.<name>.average=6` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
| `traefik.frontend.rateLimit.rateSet.<name>.burst=6` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
| `traefik.frontend.redirect.entryPoint=https` | Enables Redirect to another entryPoint to this frontend (e.g. HTTPS) |
| `traefik.frontend.redirect.regex=^http://localhost/(.*)` | Redirects to another URL to this frontend.<br>Must be set with `traefik.frontend.redirect.replacement`. |
| `traefik.frontend.redirect.replacement=http://mydomain/$1` | Redirects to another URL to this frontend.<br>Must be set with `traefik.frontend.redirect.regex`. |
| `traefik.frontend.redirect.permanent=true` | Returns 301 instead of 302. |
| `traefik.frontend.rule=EXPR` | Overrides the default frontend rule. Default: `Host:{discovery_name}.{domain}`. |
| `traefik.frontend.whiteList.sourceRange=RANGE` | Sets a list of IP-Ranges which are allowed to access.<br>An unset or empty list allows all Source-IPs to access. If one of the Net-Specifications are invalid, the whole list is invalid and allows all Source-IPs to access. |
| `traefik.frontend.whiteList.ipStrategy=true` | Uses the default IPStrategy.<br>Can be used when there is an existing `clientIPStrategy` but you want the remote address for whitelisting. |
| `traefik.frontend.whiteList.ipStrategy.depth=5` | See [whitelist](/configuration/entrypoints/#white-listing) |
| `traefik.frontend.whiteList.ipStrategy.excludedIPs=127.0.0.1` | See [whitelist](/configuration/entrypoints/#white-listing) |
### Custom Headers
| Label | Description |
|-------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `traefik.frontend.headers.customRequestHeaders=EXPR ` | Provides the container with custom request headers that will be appended to each request forwarded to the container.<br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
| `traefik.frontend.headers.customResponseHeaders=EXPR` | Appends the headers to each response returned by the container, before forwarding the response to the client.<br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
### Security Headers
| Label | Description |
|----------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `traefik.frontend.headers.allowedHosts=EXPR` | Provides a list of allowed hosts that requests will be processed.<br>Format: `Host1,Host2` |
| `traefik.frontend.headers.browserXSSFilter=true` | Adds the X-XSS-Protection header with the value `1; mode=block`. |
| `traefik.frontend.headers.contentSecurityPolicy=VALUE` | Adds CSP Header with the custom value. |
| `traefik.frontend.headers.contentTypeNosniff=true` | Adds the `X-Content-Type-Options` header with the value `nosniff`. |
| `traefik.frontend.headers.customBrowserXSSValue=VALUE` | Set custom value for X-XSS-Protection header. This overrides the BrowserXssFilter option. |
| `traefik.frontend.headers.customFrameOptionsValue=VALUE` | Overrides the `X-Frame-Options` header with the custom value. |
| `traefik.frontend.headers.forceSTSHeader=false` | Adds the STS header to non-SSL requests. |
| `traefik.frontend.headers.frameDeny=false` | Adds the `X-Frame-Options` header with the value of `DENY`. |
| `traefik.frontend.headers.hostsProxyHeaders=EXPR ` | Provides a list of headers that the proxied hostname may be stored.<br>Format: `HEADER1,HEADER2` |
| `traefik.frontend.headers.isDevelopment=false` | This will cause the `AllowedHosts`, `SSLRedirect`, and `STSSeconds`/`STSIncludeSubdomains` options to be ignored during development.<br>When deploying to production, be sure to set this to false. |
| `traefik.frontend.headers.publicKey=VALUE` | Adds HPKP header. |
| `traefik.frontend.headers.referrerPolicy=VALUE` | Adds referrer policy header. |
| `traefik.frontend.headers.SSLRedirect=true` | Forces the frontend to redirect to SSL if a non-SSL request is sent. |
| `traefik.frontend.headers.SSLTemporaryRedirect=true` | Forces the frontend to redirect to SSL if a non-SSL request is sent, but by sending a 302 instead of a 301. |
| `traefik.frontend.headers.SSLHost=HOST` | This setting configures the hostname that redirects will be based on. Default is "", which is the same host as the request. |
| `traefik.frontend.headers.SSLForceHost=true` | If `SSLForceHost` is `true` and `SSLHost` is set, requests will be forced to use `SSLHost` even the ones that are already using SSL. Default is false. |
| `traefik.frontend.headers.SSLProxyHeaders=EXPR` | Header combinations that would signify a proper SSL Request (Such as `X-Forwarded-For:https`).<br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
| `traefik.frontend.headers.STSSeconds=315360000` | Sets the max-age of the STS header. |
| `traefik.frontend.headers.STSIncludeSubdomains=true` | Adds the `IncludeSubdomains` section of the STS header. |
| `traefik.frontend.headers.STSPreload=true` | Adds the preload flag to the STS header. |
### Applications with Multiple Ports (segment labels)
Segment labels are used to define routes to an application exposing multiple ports.
A segment is a group of labels that apply to a port exposed by an application.
You can define as many segments as ports exposed in an application.
Additionally, if a segment name matches a named port, that port will be used unless `portIndex`, `portName`, or `port` labels are specified for that segment.
Segment labels override the default behavior.
| Label | Description |
|-------------------------------------------------------------------------------------|-------------------------------------------------------------------------|
| `traefik.<segment_name>.backend=BACKEND` | Same as `traefik.backend` |
| `traefik.<segment_name>.domain=DOMAIN` | Same as `traefik.domain` |
| `traefik.<segment_name>.portIndex=1` | Same as `traefik.portIndex` |
| `traefik.<segment_name>.portName=web` | Same as `traefik.portName` |
| `traefik.<segment_name>.port=PORT` | Same as `traefik.port` |
| `traefik.<segment_name>.protocol=http` | Same as `traefik.protocol` |
| `traefik.<segment_name>.weight=10` | Same as `traefik.weight` |
| `traefik.<segment_name>.frontend.auth.basic=EXPR` | Same as `traefik.frontend.auth.basic` |
| `traefik.<segment_name>.frontend.auth.basic.removeHeader=true` | Same as `traefik.frontend.auth.basic.removeHeader` |
| `traefik.<segment_name>.frontend.auth.basic.users=EXPR` | Same as `traefik.frontend.auth.basic.users` |
| `traefik.<segment_name>.frontend.auth.basic.usersFile=/path/.htpasswd` | Same as `traefik.frontend.auth.basic.usersFile` |
| `traefik.<segment_name>.frontend.auth.digest.removeHeader=true` | Same as `traefik.frontend.auth.digest.removeHeader` |
| `traefik.<segment_name>.frontend.auth.digest.users=EXPR` | Same as `traefik.frontend.auth.digest.users` |
| `traefik.<segment_name>.frontend.auth.digest.usersFile=/path/.htdigest` | Same as `traefik.frontend.auth.digest.usersFile` |
| `traefik.<segment_name>.frontend.auth.forward.address=https://example.com` | Same as `traefik.frontend.auth.forward.address` |
| `traefik.<segment_name>.frontend.auth.forward.authResponseHeaders=EXPR` | Same as `traefik.frontend.auth.forward.authResponseHeaders` |
| `traefik.<segment_name>.frontend.auth.forward.tls.ca=/path/ca.pem` | Same as `traefik.frontend.auth.forward.tls.ca` |
| `traefik.<segment_name>.frontend.auth.forward.tls.caOptional=true` | Same as `traefik.frontend.auth.forward.tls.caOptional` |
| `traefik.<segment_name>.frontend.auth.forward.tls.cert=/path/server.pem` | Same as `traefik.frontend.auth.forward.tls.cert` |
| `traefik.<segment_name>.frontend.auth.forward.tls.insecureSkipVerify=true` | Same as `traefik.frontend.auth.forward.tls.insecureSkipVerify` |
| `traefik.<segment_name>.frontend.auth.forward.tls.key=/path/server.key` | Same as `traefik.frontend.auth.forward.tls.key` |
| `traefik.<segment_name>.frontend.auth.forward.trustForwardHeader=true` | Same as `traefik.frontend.auth.forward.trustForwardHeader` |
| `traefik.<segment_name>.frontend.auth.headerField=X-WebAuth-User` | Same as `traefik.frontend.auth.headerField` |
| `traefik.<segment_name>.frontend.auth.removeHeader=true` | Same as `traefik.frontend.auth.removeHeader` |
| `traefik.<segment_name>.frontend.entryPoints=https` | Same as `traefik.frontend.entryPoints` |
| `traefik.<segment_name>.frontend.errors.<name>.backend=NAME` | Same as `traefik.frontend.errors.<name>.backend` |
| `traefik.<segment_name>.frontend.errors.<name>.query=PATH` | Same as `traefik.frontend.errors.<name>.query` |
| `traefik.<segment_name>.frontend.errors.<name>.status=RANGE` | Same as `traefik.frontend.errors.<name>.status` |
| `traefik.<segment_name>.frontend.passHostHeader=true` | Same as `traefik.frontend.passHostHeader` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.notAfter=true` | Same as `traefik.frontend.passTLSClientCert.infos.notAfter` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.notBefore=true` | Same as `traefik.frontend.passTLSClientCert.infos.notBefore` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.sans=true` | Same as `traefik.frontend.passTLSClientCert.infos.sans` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.commonName=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.commonName` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.country=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.country` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.locality=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.locality` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.organization=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.organization` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.province=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.province` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.serialNumber=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.serialNumber` |
| `traefik.<segment_name>.frontend.passTLSClientCert.pem=true` | Same as `traefik.frontend.passTLSClientCert.infos.pem` |
| `traefik.<segment_name>.frontend.passTLSCert=true` | Same as `traefik.frontend.passTLSCert` |
| `traefik.<segment_name>.frontend.priority=10` | Same as `traefik.frontend.priority` |
| `traefik.<segment_name>.frontend.rateLimit.extractorFunc=EXP` | Same as `traefik.frontend.rateLimit.extractorFunc` |
| `traefik.<segment_name>.frontend.rateLimit.rateSet.<name>.period=6` | Same as `traefik.frontend.rateLimit.rateSet.<name>.period` |
| `traefik.<segment_name>.frontend.rateLimit.rateSet.<name>.average=6` | Same as `traefik.frontend.rateLimit.rateSet.<name>.average` |
| `traefik.<segment_name>.frontend.rateLimit.rateSet.<name>.burst=6` | Same as `traefik.frontend.rateLimit.rateSet.<name>.burst` |
| `traefik.<segment_name>.frontend.redirect.entryPoint=https` | Same as `traefik.frontend.redirect.entryPoint` |
| `traefik.<segment_name>.frontend.redirect.regex=^http://localhost/(.*)` | Same as `traefik.frontend.redirect.regex` |
| `traefik.<segment_name>.frontend.redirect.replacement=http://mydomain/$1` | Same as `traefik.frontend.redirect.replacement` |
| `traefik.<segment_name>.frontend.redirect.permanent=true` | Same as `traefik.frontend.redirect.permanent` |
| `traefik.<segment_name>.frontend.rule=EXP` | Same as `traefik.frontend.rule` |
| `traefik.<segment_name>.frontend.whiteList.sourceRange=RANGE` | Same as `traefik.frontend.whiteList.sourceRange` |
| `traefik.<segment_name>.frontend.whiteList.ipStrategy=true` | Same as `traefik.frontend.whiteList.ipStrategy` |
| `traefik.<segment_name>.frontend.whiteList.ipStrategy.depth=5` | Same as `traefik.frontend.whiteList.ipStrategy.depth` |
| `traefik.<segment_name>.frontend.whiteList.ipStrategy.excludedIPs=127.0.0.1` | Same as `traefik.frontend.whiteList.ipStrategy.excludedIPs` |
#### Custom Headers
| Label | Description |
|----------------------------------------------------------------------|----------------------------------------------------------|
| `traefik.<segment_name>.frontend.headers.customRequestHeaders=EXPR ` | Same as `traefik.frontend.headers.customRequestHeaders` |
| `traefik.<segment_name>.frontend.headers.customResponseHeaders=EXPR` | Same as `traefik.frontend.headers.customResponseHeaders` |
#### Security Headers
| Label | Description |
|-------------------------------------------------------------------------|--------------------------------------------------------------|
| `traefik.<segment_name>.frontend.headers.allowedHosts=EXPR` | Same as `traefik.frontend.headers.allowedHosts` |
| `traefik.<segment_name>.frontend.headers.browserXSSFilter=true` | Same as `traefik.frontend.headers.browserXSSFilter` |
| `traefik.<segment_name>.frontend.headers.contentSecurityPolicy=VALUE` | Same as `traefik.frontend.headers.contentSecurityPolicy` |
| `traefik.<segment_name>.frontend.headers.contentTypeNosniff=true` | Same as `traefik.frontend.headers.contentTypeNosniff` |
| `traefik.<segment_name>.frontend.headers.customBrowserXSSValue=VALUE` | Same as `traefik.frontend.headers.customBrowserXSSValue` |
| `traefik.<segment_name>.frontend.headers.customFrameOptionsValue=VALUE` | Same as `traefik.frontend.headers.customFrameOptionsValue` |
| `traefik.<segment_name>.frontend.headers.forceSTSHeader=false` | Same as `traefik.frontend.headers.forceSTSHeader` |
| `traefik.<segment_name>.frontend.headers.frameDeny=false` | Same as `traefik.frontend.headers.frameDeny` |
| `traefik.<segment_name>.frontend.headers.hostsProxyHeaders=EXPR` | Same as `traefik.frontend.headers.hostsProxyHeaders` |
| `traefik.<segment_name>.frontend.headers.isDevelopment=false` | Same as `traefik.frontend.headers.isDevelopment` |
| `traefik.<segment_name>.frontend.headers.publicKey=VALUE` | Same as `traefik.frontend.headers.publicKey` |
| `traefik.<segment_name>.frontend.headers.referrerPolicy=VALUE` | Same as `traefik.frontend.headers.referrerPolicy` |
| `traefik.<segment_name>.frontend.headers.SSLRedirect=true` | Same as `traefik.frontend.headers.SSLRedirect` |
| `traefik.<segment_name>.frontend.headers.SSLTemporaryRedirect=true` | Same as `traefik.frontend.headers.SSLTemporaryRedirect` |
| `traefik.<segment_name>.frontend.headers.SSLHost=HOST` | Same as `traefik.frontend.headers.SSLHost` |
| `traefik.<segment_name>.frontend.headers.SSLForceHost=true` | Same as `traefik.frontend.headers.SSLForceHost` |
| `traefik.<segment_name>.frontend.headers.SSLProxyHeaders=EXPR` | Same as `traefik.frontend.headers.SSLProxyHeaders=EXPR` |
| `traefik.<segment_name>.frontend.headers.STSSeconds=315360000` | Same as `traefik.frontend.headers.STSSeconds=315360000` |
| `traefik.<segment_name>.frontend.headers.STSIncludeSubdomains=true` | Same as `traefik.frontend.headers.STSIncludeSubdomains=true` |
| `traefik.<segment_name>.frontend.headers.STSPreload=true` | Same as `traefik.frontend.headers.STSPreload=true` |

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# Rancher Provider
Traefik can be configured to use Rancher as a provider.
## Global Configuration
```toml
################################################################
# Rancher Provider
################################################################
# Enable Rancher Provider.
[rancher]
# Default base domain used for the frontend rules.
# Can be overridden by setting the "traefik.domain" label on an service.
#
# Required
#
domain = "rancher.localhost"
# Enable watch Rancher changes.
#
# Optional
# Default: true
#
watch = true
# Polling interval (in seconds).
#
# Optional
# Default: 15
#
refreshSeconds = 15
# Expose Rancher services by default in Traefik.
#
# Optional
# Default: true
#
exposedByDefault = false
# Filter services with unhealthy states and inactive states.
#
# Optional
# Default: false
#
enableServiceHealthFilter = true
# Override default configuration template.
# For advanced users :)
#
# Optional
#
# filename = "rancher.tmpl"
# Override template version
# For advanced users :)
#
# Optional
# - "1": previous template version (must be used only with older custom templates, see "filename")
# - "2": current template version (must be used to force template version when "filename" is used)
#
# templateVersion = 2
```
To enable constraints see [provider-specific constraints section](/configuration/commons/#provider-specific).
## Rancher Metadata Service
```toml
# Enable Rancher metadata service provider instead of the API
# provider.
#
# Optional
# Default: false
#
[rancher.metadata]
# Poll the Rancher metadata service for changes every `rancher.refreshSeconds`.
# NOTE: this is less accurate than the default long polling technique which
# will provide near instantaneous updates to Traefik
#
# Optional
# Default: false
#
intervalPoll = true
# Prefix used for accessing the Rancher metadata service.
#
# Optional
# Default: "/latest"
#
prefix = "/2016-07-29"
```
## Rancher API
```toml
# Enable Rancher API provider.
#
# Optional
# Default: true
#
[rancher.api]
# Endpoint to use when connecting to the Rancher API.
#
# Required
endpoint = "http://rancherserver.example.com/v1"
# AccessKey to use when connecting to the Rancher API.
#
# Required
accessKey = "XXXXXXXXXXXXXXXXXXXX"
# SecretKey to use when connecting to the Rancher API.
#
# Required
secretKey = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
```
!!! note
If Traefik needs access to the Rancher API, you need to set the `endpoint`, `accesskey` and `secretkey` parameters.
To enable Traefik to fetch information about the Environment it's deployed in only, you need to create an `Environment API Key`.
This can be found within the API Key advanced options.
Add these labels to traefik docker deployment to autogenerated these values:
```
io.rancher.container.agent.role: environment
io.rancher.container.create_agent: true
```
## Labels: overriding default behavior
### On Containers
Labels can be used on task containers to override default behavior:
| Label | Description |
|---------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `traefik.domain` | Sets the default base domain for the frontend rules. |
| `traefik.enable=false` | Disables this container in Traefik. |
| `traefik.port=80` | Registers this port. Useful when the container exposes multiple ports. |
| `traefik.protocol=https` | Overrides the default `http` protocol. |
| `traefik.weight=10` | Assigns this weight to the container. |
| `traefik.backend=foo` | Overrides the service name by `foo` in the generated name of the backend. |
| `traefik.backend.buffering.maxRequestBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.maxResponseBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.memRequestBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.memResponseBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.retryExpression=EXPR` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.circuitbreaker.expression=EXPR` | Creates a [circuit breaker](/basics/#backends) to be used against the backend |
| `traefik.backend.responseForwarding.flushInterval=10ms` | Defines the interval between two flushes when forwarding response from backend to client. |
| `traefik.backend.healthcheck.path=/health` | Enables health check for the backend, hitting the container at `path`. |
| `traefik.backend.healthcheck.interval=5s` | Defines the health check interval. |
| `traefik.backend.healthcheck.timeout=3s ` | Defines the health check request timeout. |
| `traefik.backend.healthcheck.port=8080` | Sets a different port for the health check. |
| `traefik.backend.healthcheck.scheme=http` | Overrides the server URL scheme. |
| `traefik.backend.healthcheck.hostname=foobar.com` | Defines the health check hostname. |
| `traefik.backend.healthcheck.headers=EXPR` | Defines the health check request headers <br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
| `traefik.backend.loadbalancer.method=drr` | Overrides the default `wrr` load balancer algorithm |
| `traefik.backend.loadbalancer.stickiness=true` | Enables backend sticky sessions |
| `traefik.backend.loadbalancer.stickiness.cookieName=NAME` | Sets the cookie name manually for sticky sessions |
| `traefik.backend.maxconn.amount=10` | Sets a maximum number of connections to the backend.<br>Must be used in conjunction with the below label to take effect. |
| `traefik.backend.maxconn.extractorfunc=client.ip` | Sets the function to be used against the request to determine what to limit maximum connections to the backend by.<br>Must be used in conjunction with the above label to take effect. |
| `traefik.frontend.auth.basic=EXPR` | Sets the basic authentication to this frontend in CSV format: `User:Hash,User:Hash` (DEPRECATED). |
| `traefik.frontend.auth.basic.removeHeader=true` | If set to `true`, removes the `Authorization` header. |
| `traefik.frontend.auth.basic.users=EXPR` | Sets the basic authentication to this frontend in CSV format: `User:Hash,User:Hash` . |
| `traefik.frontend.auth.basic.usersFile=/path/.htpasswd` | Sets the basic authentication with an external file; if users and usersFile are provided, both are merged, with external file contents having precedence. |
| `traefik.frontend.auth.digest.removeHeader=true` | If set to `true`, removes the `Authorization` header. |
| `traefik.frontend.auth.digest.users=EXPR` | Sets the digest authentication to this frontend in CSV format: `User:Realm:Hash,User:Realm:Hash`. |
| `traefik.frontend.auth.digest.usersFile=/path/.htdigest` | Sets the digest authentication with an external file; if users and usersFile are provided, both are merged, with external file contents having precedence. |
| `traefik.frontend.auth.forward.address=https://example.com` | Sets the URL of the authentication server. |
| `traefik.frontend.auth.forward.authResponseHeaders=EXPR` | Sets the forward authentication authResponseHeaders in CSV format: `X-Auth-User,X-Auth-Header` |
| `traefik.frontend.auth.forward.tls.ca=/path/ca.pem` | Sets the Certificate Authority (CA) for the TLS connection with the authentication server. |
| `traefik.frontend.auth.forward.tls.caOptional=true` | Checks the certificates if present but do not force to be signed by a specified Certificate Authority (CA). |
| `traefik.frontend.auth.forward.tls.cert=/path/server.pem` | Sets the Certificate for the TLS connection with the authentication server. |
| `traefik.frontend.auth.forward.tls.insecureSkipVerify=true` | If set to true invalid SSL certificates are accepted. |
| `traefik.frontend.auth.forward.tls.key=/path/server.key` | Sets the Certificate for the TLS connection with the authentication server. |
| `traefik.frontend.auth.forward.trustForwardHeader=true` | Trusts X-Forwarded-* headers. |
| `traefik.frontend.auth.headerField=X-WebAuth-User` | Sets the header used to pass the authenticated user to the application. |
| `traefik.frontend.entryPoints=http,https` | Assigns this frontend to entry points `http` and `https`.<br>Overrides `defaultEntryPoints` |
| `traefik.frontend.errors.<name>.backend=NAME` | See [custom error pages](/configuration/commons/#custom-error-pages) section. |
| `traefik.frontend.errors.<name>.query=PATH` | See [custom error pages](/configuration/commons/#custom-error-pages) section. |
| `traefik.frontend.errors.<name>.status=RANGE` | See [custom error pages](/configuration/commons/#custom-error-pages) section. |
| `traefik.frontend.passHostHeader=true` | Forwards client `Host` header to the backend. |
| `traefik.frontend.passTLSClientCert.infos.issuer.commonName=true` | Add the issuer.commonName field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.country=true` | Add the issuer.country field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.domainComponent=true` | Add the issuer.domainComponent field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.locality=true` | Add the issuer.locality field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.organization=true` | Add the issuer.organization field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.province=true` | Add the issuer.province field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.issuer.serialNumber=true` | Add the issuer.serialNumber field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.notAfter=true` | Add the noAfter field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.notBefore=true` | Add the noBefore field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.sans=true` | Add the sans field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.commonName=true` | Add the subject.commonName field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.country=true` | Add the subject.country field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.domainComponent=true` | Add the subject.domainComponent field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.locality=true` | Add the subject.locality field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.organization=true`| Add the subject.organization field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.province=true` | Add the subject.province field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.infos.subject.serialNumber=true`| Add the subject.serialNumber field in a escaped client infos in the `X-Forwarded-Ssl-Client-Cert-Infos` header. |
| `traefik.frontend.passTLSClientCert.pem=true` | Pass the escaped pem in the `X-Forwarded-Ssl-Client-Cert` header. |
| `traefik.frontend.passTLSCert=true` | Forwards TLS Client certificates to the backend. |
| `traefik.frontend.priority=10` | Overrides default frontend priority |
| `traefik.frontend.rateLimit.extractorFunc=EXP` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
| `traefik.frontend.rateLimit.rateSet.<name>.period=6` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
| `traefik.frontend.rateLimit.rateSet.<name>.average=6` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
| `traefik.frontend.rateLimit.rateSet.<name>.burst=6` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
| `traefik.frontend.redirect.entryPoint=https` | Enables Redirect to another entryPoint to this frontend (e.g. HTTPS) |
| `traefik.frontend.redirect.regex=^http://localhost/(.*)` | Redirects to another URL to this frontend.<br>Must be set with `traefik.frontend.redirect.replacement`. |
| `traefik.frontend.redirect.replacement=http://mydomain/$1` | Redirects to another URL to this frontend.<br>Must be set with `traefik.frontend.redirect.regex`. |
| `traefik.frontend.redirect.permanent=true` | Returns 301 instead of 302. |
| `traefik.frontend.rule=EXPR` | Overrides the default frontend rule. Default: `Host:{containerName}.{domain}` or `Host:{service}.{project_name}.{domain}` if you are using `docker-compose`. |
| `traefik.frontend.whiteList.sourceRange=RANGE` | Sets a list of IP-Ranges which are allowed to access.<br>An unset or empty list allows all Source-IPs to access.<br>If one of the Net-Specifications are invalid, the whole list is invalid and allows all Source-IPs to access. |
| `traefik.frontend.whiteList.ipStrategy=true` | Uses the default IPStrategy.<br>Can be used when there is an existing `clientIPStrategy` but you want the remote address for whitelisting. |
| `traefik.frontend.whiteList.ipStrategy.depth=5` | See [whitelist](/configuration/entrypoints/#white-listing) |
| `traefik.frontend.whiteList.ipStrategy.excludedIPs=127.0.0.1` | See [whitelist](/configuration/entrypoints/#white-listing) |
#### Custom Headers
| Label | Description |
|-------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `traefik.frontend.headers.customRequestHeaders=EXPR ` | Provides the container with custom request headers that will be appended to each request forwarded to the container.<br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
| `traefik.frontend.headers.customResponseHeaders=EXPR` | Appends the headers to each response returned by the container, before forwarding the response to the client.<br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
#### Security Headers
| Label | Description |
|----------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `traefik.frontend.headers.allowedHosts=EXPR` | Provides a list of allowed hosts that requests will be processed.<br>Format: `Host1,Host2` |
| `traefik.frontend.headers.browserXSSFilter=true` | Adds the X-XSS-Protection header with the value `1; mode=block`. |
| `traefik.frontend.headers.contentSecurityPolicy=VALUE` | Adds CSP Header with the custom value. |
| `traefik.frontend.headers.contentTypeNosniff=true` | Adds the `X-Content-Type-Options` header with the value `nosniff`. |
| `traefik.frontend.headers.customBrowserXSSValue=VALUE` | Set custom value for X-XSS-Protection header. This overrides the BrowserXssFilter option. |
| `traefik.frontend.headers.customFrameOptionsValue=VALUE` | Overrides the `X-Frame-Options` header with the custom value. |
| `traefik.frontend.headers.forceSTSHeader=false` | Adds the STS header to non-SSL requests. |
| `traefik.frontend.headers.frameDeny=false` | Adds the `X-Frame-Options` header with the value of `DENY`. |
| `traefik.frontend.headers.hostsProxyHeaders=EXPR ` | Provides a list of headers that the proxied hostname may be stored.<br>Format: `HEADER1,HEADER2` |
| `traefik.frontend.headers.isDevelopment=false` | This will cause the `AllowedHosts`, `SSLRedirect`, and `STSSeconds`/`STSIncludeSubdomains` options to be ignored during development.<br>When deploying to production, be sure to set this to false. |
| `traefik.frontend.headers.publicKey=VALUE` | Adds HPKP header. |
| `traefik.frontend.headers.referrerPolicy=VALUE` | Adds referrer policy header. |
| `traefik.frontend.headers.SSLRedirect=true` | Forces the frontend to redirect to SSL if a non-SSL request is sent. |
| `traefik.frontend.headers.SSLTemporaryRedirect=true` | Forces the frontend to redirect to SSL if a non-SSL request is sent, but by sending a 302 instead of a 301. |
| `traefik.frontend.headers.SSLHost=HOST` | This setting configures the hostname that redirects will be based on. Default is "", which is the same host as the request. |
| `traefik.frontend.headers.SSLForceHost=true` | If `SSLForceHost` is `true` and `SSLHost` is set, requests will be forced to use `SSLHost` even the ones that are already using SSL. Default is false. |
| `traefik.frontend.headers.SSLProxyHeaders=EXPR` | Header combinations that would signify a proper SSL Request (Such as `X-Forwarded-For:https`).<br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
| `traefik.frontend.headers.STSSeconds=315360000` | Sets the max-age of the STS header. |
| `traefik.frontend.headers.STSIncludeSubdomains=true` | Adds the `IncludeSubdomains` section of the STS header. |
| `traefik.frontend.headers.STSPreload=true` | Adds the preload flag to the STS header. |
### On containers with Multiple Ports (segment labels)
Segment labels are used to define routes to a container exposing multiple ports.
A segment is a group of labels that apply to a port exposed by a container.
You can define as many segments as ports exposed in a container.
Segment labels override the default behavior.
| Label | Description |
|----------------------------------------------------------------------------------------|----------------------------------------------------------------------------|
| `traefik.<segment_name>.backend=BACKEND` | Same as `traefik.backend` |
| `traefik.<segment_name>.domain=DOMAIN` | Same as `traefik.domain` |
| `traefik.<segment_name>.port=PORT` | Same as `traefik.port` |
| `traefik.<segment_name>.protocol=http` | Same as `traefik.protocol` |
| `traefik.<segment_name>.weight=10` | Same as `traefik.weight` |
| `traefik.<segment_name>.frontend.auth.basic=EXPR` | Same as `traefik.frontend.auth.basic` |
| `traefik.<segment_name>.frontend.auth.basic.removeHeader=true` | Same as `traefik.frontend.auth.basic.removeHeader` |
| `traefik.<segment_name>.frontend.auth.basic.users=EXPR` | Same as `traefik.frontend.auth.basic.users` |
| `traefik.<segment_name>.frontend.auth.basic.usersFile=/path/.htpasswd` | Same as `traefik.frontend.auth.basic.usersFile` |
| `traefik.<segment_name>.frontend.auth.digest.removeHeader=true` | Same as `traefik.frontend.auth.digest.removeHeader` |
| `traefik.<segment_name>.frontend.auth.digest.users=EXPR` | Same as `traefik.frontend.auth.digest.users` |
| `traefik.<segment_name>.frontend.auth.digest.usersFile=/path/.htdigest` | Same as `traefik.frontend.auth.digest.usersFile` |
| `traefik.<segment_name>.frontend.auth.forward.address=https://example.com` | Same as `traefik.frontend.auth.forward.address` |
| `traefik.<segment_name>.frontend.auth.forward.authResponseHeaders=EXPR` | Same as `traefik.frontend.auth.forward.authResponseHeaders` |
| `traefik.<segment_name>.frontend.auth.forward.tls.ca=/path/ca.pem` | Same as `traefik.frontend.auth.forward.tls.ca` |
| `traefik.<segment_name>.frontend.auth.forward.tls.caOptional=true` | Same as `traefik.frontend.auth.forward.tls.caOptional` |
| `traefik.<segment_name>.frontend.auth.forward.tls.cert=/path/server.pem` | Same as `traefik.frontend.auth.forward.tls.cert` |
| `traefik.<segment_name>.frontend.auth.forward.tls.insecureSkipVerify=true` | Same as `traefik.frontend.auth.forward.tls.insecureSkipVerify` |
| `traefik.<segment_name>.frontend.auth.forward.tls.key=/path/server.key` | Same as `traefik.frontend.auth.forward.tls.key` |
| `traefik.<segment_name>.frontend.auth.forward.trustForwardHeader=true` | Same as `traefik.frontend.auth.forward.trustForwardHeader` |
| `traefik.<segment_name>.frontend.auth.headerField=X-WebAuth-User` | Same as `traefik.frontend.auth.headerField` |
| `traefik.<segment_name>.frontend.entryPoints=https` | Same as `traefik.frontend.entryPoints` |
| `traefik.<segment_name>.frontend.errors.<name>.backend=NAME` | Same as `traefik.frontend.errors.<name>.backend` |
| `traefik.<segment_name>.frontend.errors.<name>.query=PATH` | Same as `traefik.frontend.errors.<name>.query` |
| `traefik.<segment_name>.frontend.errors.<name>.status=RANGE` | Same as `traefik.frontend.errors.<name>.status` |
| `traefik.<segment_name>.frontend.passHostHeader=true` | Same as `traefik.frontend.passHostHeader` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.issuer.commonName=true` | Same as `traefik.frontend.passTLSClientCert.infos.issuer.commonName` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.issuer.country=true` | Same as `traefik.frontend.passTLSClientCert.infos.issuer.country` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.issuer.domainComponent=true` | Same as `traefik.frontend.passTLSClientCert.infos.issuer.domainComponent` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.issuer.locality=true` | Same as `traefik.frontend.passTLSClientCert.infos.issuer.locality` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.issuer.organization=true` | Same as `traefik.frontend.passTLSClientCert.infos.issuer.organization` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.issuer.province=true` | Same as `traefik.frontend.passTLSClientCert.infos.issuer.province` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.issuer.serialNumber=true` | Same as `traefik.frontend.passTLSClientCert.infos.issuer.serialNumber` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.notAfter=true` | Same as `traefik.frontend.passTLSClientCert.infos.notAfter` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.notBefore=true` | Same as `traefik.frontend.passTLSClientCert.infos.notBefore` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.sans=true` | Same as `traefik.frontend.passTLSClientCert.infos.sans` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.commonName=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.commonName` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.country=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.country` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.domainComponent=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.domainComponent` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.locality=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.locality` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.organization=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.organization` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.province=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.province` |
| `traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.serialNumber=true` | Same as `traefik.frontend.passTLSClientCert.infos.subject.serialNumber` |
| `traefik.<segment_name>.frontend.passTLSClientCert.pem=true` | Same as `traefik.frontend.passTLSClientCert.infos.pem` |
| `traefik.<segment_name>.frontend.passTLSCert=true` | Same as `traefik.frontend.passTLSCert` |
| `traefik.<segment_name>.frontend.priority=10` | Same as `traefik.frontend.priority` |
| `traefik.<segment_name>.frontend.rateLimit.extractorFunc=EXP` | Same as `traefik.frontend.rateLimit.extractorFunc` |
| `traefik.<segment_name>.frontend.rateLimit.rateSet.<name>.period=6` | Same as `traefik.frontend.rateLimit.rateSet.<name>.period` |
| `traefik.<segment_name>.frontend.rateLimit.rateSet.<name>.average=6` | Same as `traefik.frontend.rateLimit.rateSet.<name>.average` |
| `traefik.<segment_name>.frontend.rateLimit.rateSet.<name>.burst=6` | Same as `traefik.frontend.rateLimit.rateSet.<name>.burst` |
| `traefik.<segment_name>.frontend.redirect.entryPoint=https` | Same as `traefik.frontend.redirect.entryPoint` |
| `traefik.<segment_name>.frontend.redirect.regex=^http://localhost/(.*)` | Same as `traefik.frontend.redirect.regex` |
| `traefik.<segment_name>.frontend.redirect.replacement=http://mydomain/$1` | Same as `traefik.frontend.redirect.replacement` |
| `traefik.<segment_name>.frontend.redirect.permanent=true` | Same as `traefik.frontend.redirect.permanent` |
| `traefik.<segment_name>.frontend.rule=EXP` | Same as `traefik.frontend.rule` |
| `traefik.<segment_name>.frontend.whiteList.sourceRange=RANGE` | Same as `traefik.frontend.whiteList.sourceRange` |
| `traefik.<segment_name>.frontend.whiteList.ipStrategy=true` | Same as `traefik.frontend.whiteList.ipStrategy` |
| `traefik.<segment_name>.frontend.whiteList.ipStrategy.depth=5` | Same as `traefik.frontend.whiteList.ipStrategy.depth` |
| `traefik.<segment_name>.frontend.whiteList.ipStrategy.excludedIPs=127.0.0.1` | Same as `traefik.frontend.whiteList.ipStrategy.excludedIPs` |
#### Custom Headers
| Label | Description |
|----------------------------------------------------------------------|------------------------------------------------------------|
| `traefik.<segment_name>.frontend.headers.customRequestHeaders=EXPR ` | overrides `traefik.frontend.headers.customRequestHeaders` |
| `traefik.<segment_name>.frontend.headers.customResponseHeaders=EXPR` | overrides `traefik.frontend.headers.customResponseHeaders` |
#### Security Headers
| Label | Description |
|-------------------------------------------------------------------------|--------------------------------------------------------------|
| `traefik.<segment_name>.frontend.headers.allowedHosts=EXPR` | overrides `traefik.frontend.headers.allowedHosts` |
| `traefik.<segment_name>.frontend.headers.browserXSSFilter=true` | overrides `traefik.frontend.headers.browserXSSFilter` |
| `traefik.<segment_name>.frontend.headers.contentSecurityPolicy=VALUE` | overrides `traefik.frontend.headers.contentSecurityPolicy` |
| `traefik.<segment_name>.frontend.headers.contentTypeNosniff=true` | overrides `traefik.frontend.headers.contentTypeNosniff` |
| `traefik.<segment_name>.frontend.headers.customBrowserXSSValue=VALUE` | overrides `traefik.frontend.headers.customBrowserXSSValue` |
| `traefik.<segment_name>.frontend.headers.customFrameOptionsValue=VALUE` | overrides `traefik.frontend.headers.customFrameOptionsValue` |
| `traefik.<segment_name>.frontend.headers.forceSTSHeader=false` | overrides `traefik.frontend.headers.forceSTSHeader` |
| `traefik.<segment_name>.frontend.headers.frameDeny=false` | overrides `traefik.frontend.headers.frameDeny` |
| `traefik.<segment_name>.frontend.headers.hostsProxyHeaders=EXPR` | overrides `traefik.frontend.headers.hostsProxyHeaders` |
| `traefik.<segment_name>.frontend.headers.isDevelopment=false` | overrides `traefik.frontend.headers.isDevelopment` |
| `traefik.<segment_name>.frontend.headers.publicKey=VALUE` | overrides `traefik.frontend.headers.publicKey` |
| `traefik.<segment_name>.frontend.headers.referrerPolicy=VALUE` | overrides `traefik.frontend.headers.referrerPolicy` |
| `traefik.<segment_name>.frontend.headers.SSLRedirect=true` | overrides `traefik.frontend.headers.SSLRedirect` |
| `traefik.<segment_name>.frontend.headers.SSLTemporaryRedirect=true` | overrides `traefik.frontend.headers.SSLTemporaryRedirect` |
| `traefik.<segment_name>.frontend.headers.SSLHost=HOST` | overrides `traefik.frontend.headers.SSLHost` |
| `traefik.<segment_name>.frontend.headers.SSLForceHost=true` | overrides `traefik.frontend.headers.SSLForceHost` |
| `traefik.<segment_name>.frontend.headers.SSLProxyHeaders=EXPR` | overrides `traefik.frontend.headers.SSLProxyHeaders` |
| `traefik.<segment_name>.frontend.headers.STSSeconds=315360000` | overrides `traefik.frontend.headers.STSSeconds` |
| `traefik.<segment_name>.frontend.headers.STSIncludeSubdomains=true` | overrides `traefik.frontend.headers.STSIncludeSubdomains` |
| `traefik.<segment_name>.frontend.headers.STSPreload=true` | overrides `traefik.frontend.headers.STSPreload` |

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@ -0,0 +1,92 @@
# Rest Provider
Traefik can be configured:
- using a RESTful api.
## Configuration
```toml
# Enable REST Provider.
[rest]
# Name of the related entry point
#
# Optional
# Default: "traefik"
#
entryPoint = "traefik"
```
## API
| Path | Method | Description |
|------------------------------|--------|-----------------|
| `/api/providers/web` | `PUT` | update provider |
| `/api/providers/rest` | `PUT` | update provider |
!!! warning
For compatibility reason, when you activate the rest provider, you can use `web` or `rest` as `provider` value.
```shell
curl -XPUT -d @file "http://localhost:8080/api/providers/rest"
```
with `@file`:
```json
{
"frontends": {
"frontend2": {
"routes": {
"test_2": {
"rule": "Path:/test"
}
},
"backend": "backend1"
},
"frontend1": {
"routes": {
"test_1": {
"rule": "Host:test.localhost"
}
},
"backend": "backend2"
}
},
"backends": {
"backend2": {
"loadBalancer": {
"method": "drr"
},
"servers": {
"server2": {
"weight": 2,
"URL": "http://172.17.0.5:80"
},
"server1": {
"weight": 1,
"url": "http://172.17.0.4:80"
}
}
},
"backend1": {
"loadBalancer": {
"method": "wrr"
},
"circuitBreaker": {
"expression": "NetworkErrorRatio() > 0.5"
},
"servers": {
"server2": {
"weight": 1,
"url": "http://172.17.0.3:80"
},
"server1": {
"weight": 10,
"url": "http://172.17.0.2:80"
}
}
}
}
}
```

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@ -0,0 +1,160 @@
# Azure Service Fabric Provider
Traefik can be configured to use Azure Service Fabric as a provider.
See [this repository for an example deployment package and further documentation.](https://aka.ms/traefikonsf)
## Azure Service Fabric
```toml
################################################################
# Azure Service Fabric Provider
################################################################
# Enable Azure Service Fabric Provider
[serviceFabric]
# Azure Service Fabric Management Endpoint
#
# Required
#
clusterManagementUrl = "https://localhost:19080"
# Azure Service Fabric Management Endpoint API Version
#
# Required
# Default: "3.0"
#
apiVersion = "3.0"
# Azure Service Fabric Polling Interval (in seconds)
#
# Required
# Default: 10
#
refreshSeconds = 10
# Enable TLS connection.
#
# Optional
#
# [serviceFabric.tls]
# ca = "/etc/ssl/ca.crt"
# cert = "/etc/ssl/servicefabric.crt"
# key = "/etc/ssl/servicefabric.key"
# insecureSkipVerify = true
```
## Labels
The provider uses labels to configure how services are exposed through Traefik.
These can be set using Extensions and the Property Manager API
#### Extensions
Set labels with extensions through the services `ServiceManifest.xml` file.
Here is an example of an extension setting Traefik labels:
```xml
<StatelessServiceType ServiceTypeName="WebServiceType">
<Extensions>
<Extension Name="Traefik">
<Labels xmlns="http://schemas.microsoft.com/2015/03/fabact-no-schema">
<Label Key="traefik.frontend.rule.example2">PathPrefixStrip: /a/path/to/strip</Label>
<Label Key="traefik.enable">true</Label>
<Label Key="traefik.frontend.passHostHeader">true</Label>
</Labels>
</Extension>
</Extensions>
</StatelessServiceType>
```
#### Property Manager
Set Labels with the property manager API to overwrite and add labels, while your service is running.
Here is an example of adding a frontend rule using the property manager API.
```shell
curl -X PUT \
'http://localhost:19080/Names/GettingStartedApplication2/WebService/$/GetProperty?api-version=6.0&IncludeValues=true' \
-d '{
"PropertyName": "traefik.frontend.rule.default",
"Value": {
"Kind": "String",
"Data": "PathPrefixStrip: /a/path/to/strip"
},
"CustomTypeId": "LabelType"
}'
```
!!! note
This functionality will be released in a future version of the [sfctl](https://docs.microsoft.com/en-us/azure/service-fabric/service-fabric-application-lifecycle-sfctl) tool.
## Available Labels
Labels, set through extensions or the property manager, can be used on services to override default behavior.
| Label | Description |
|-----------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `traefik.enable=false` | Disable this container in Traefik |
| `traefik.backend.circuitbreaker.expression=EXPR` | Create a [circuit breaker](/basics/#backends) to be used against the backend |
| `traefik.servicefabric.groupname` | Group all services with the same name into a single backend in Traefik |
| `traefik.servicefabric.groupweight` | Set the weighting of the current services nodes in the backend group |
| `traefik.servicefabric.enablelabeloverrides` | Toggle whether labels can be overridden using the Service Fabric Property Manager API |
| `traefik.backend.healthcheck.path=/health` | Enable health check for the backend, hitting the container at `path`. |
| `traefik.backend.healthcheck.port=8080` | Allow to use a different port for the health check. |
| `traefik.backend.healthcheck.interval=5s` | Define the health check interval. |
| `traefik.backend.healthcheck.timeout=3s` | Define the health check request timeout. |
| `traefik.backend.healthcheck.hostname=foobar.com` | Define the health check hostname. |
| `traefik.backend.healthcheck.headers=EXPR` | Define the health check request headers <br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
| `traefik.backend.loadbalancer.method=drr` | Override the default `wrr` load balancer algorithm |
| `traefik.backend.loadbalancer.stickiness=true` | Enable backend sticky sessions |
| `traefik.backend.loadbalancer.stickiness.cookieName=NAME` | Manually set the cookie name for sticky sessions |
| `traefik.backend.maxconn.amount=10` | Set a maximum number of connections to the backend.<br>Must be used in conjunction with the below label to take effect. |
| `traefik.backend.maxconn.extractorfunc=client.ip` | Set the function to be used against the request to determine what to limit maximum connections to the backend by.<br>Must be used in conjunction with the above label to take effect. |
| `traefik.backend.weight=10` | Assign this weight to the container |
| `traefik.frontend.auth.basic=EXPR` | Sets basic authentication for that frontend in CSV format: `User:Hash,User:Hash` |
| `traefik.frontend.entryPoints=http,https` | Assign this frontend to entry points `http` and `https`.<br>Overrides `defaultEntryPoints` |
| `traefik.frontend.passHostHeader=true` | Forward client `Host` header to the backend. |
| `traefik.frontend.passTLSCert=true` | Forward TLS Client certificates to the backend. |
| `traefik.frontend.priority=10` | Override default frontend priority |
| `traefik.frontend.redirect.entryPoint=https` | Enables Redirect to another entryPoint for that frontend (e.g. HTTPS) |
| `traefik.frontend.redirect.regex=^http://localhost/(.*)` | Redirect to another URL for that frontend.<br>Must be set with `traefik.frontend.redirect.replacement`. |
| `traefik.frontend.redirect.replacement=http://mydomain/$1` | Redirect to another URL for that frontend.<br>Must be set with `traefik.frontend.redirect.regex`. |
| `traefik.frontend.redirect.permanent=true` | Return 301 instead of 302. |
| `traefik.frontend.rule=EXPR` | Override the default frontend rule. Defaults to SF address. |
| `traefik.frontend.whiteList.sourceRange=RANGE` | List of IP-Ranges which are allowed to access.<br>An unset or empty list allows all Source-IPs to access.<br>If one of the Net-Specifications are invalid, the whole list is invalid and allows all Source-IPs to access. |
| `traefik.frontend.whiteList.ipStrategy=true` | Uses the default IPStrategy.<br>Can be used when there is an existing `clientIPStrategy` but you want the remote address for whitelisting. |
| `traefik.frontend.whiteList.ipStrategy.depth=5` | See [whitelist](/configuration/entrypoints/#white-listing) |
| `traefik.frontend.whiteList.ipStrategy.excludedIPs=127.0.0.1` | See [whitelist](/configuration/entrypoints/#white-listing) |
### Custom Headers
| Label | Description |
|-------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `traefik.frontend.headers.customRequestHeaders=EXPR ` | Provides the container with custom request headers that will be appended to each request forwarded to the container.<br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
| `traefik.frontend.headers.customResponseHeaders=EXPR` | Appends the headers to each response returned by the container, before forwarding the response to the client.<br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
### Security Headers
| Label | Description |
|----------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `traefik.frontend.headers.allowedHosts=EXPR` | Provides a list of allowed hosts that requests will be processed.<br>Format: `Host1,Host2` |
| `traefik.frontend.headers.hostsProxyHeaders=EXPR ` | Provides a list of headers that the proxied hostname may be stored.<br>Format: `HEADER1,HEADER2` |
| `traefik.frontend.headers.SSLRedirect=true` | Forces the frontend to redirect to SSL if a non-SSL request is sent. |
| `traefik.frontend.headers.SSLTemporaryRedirect=true` | Forces the frontend to redirect to SSL if a non-SSL request is sent, but by sending a 302 instead of a 301. |
| `traefik.frontend.headers.SSLHost=HOST` | This setting configures the hostname that redirects will be based on. Default is "", which is the same host as the request. |
| `traefik.frontend.headers.SSLProxyHeaders=EXPR` | Header combinations that would signify a proper SSL Request (Such as `X-Forwarded-For:https`).<br>Format: <code>HEADER:value&vert;&vert;HEADER2:value2</code> |
| `traefik.frontend.headers.STSSeconds=315360000` | Sets the max-age of the STS header. |
| `traefik.frontend.headers.STSIncludeSubdomains=true` | Adds the `IncludeSubdomains` section of the STS header. |
| `traefik.frontend.headers.STSPreload=true` | Adds the preload flag to the STS header. |
| `traefik.frontend.headers.forceSTSHeader=false` | Adds the STS header to non-SSL requests. |
| `traefik.frontend.headers.frameDeny=false` | Adds the `X-Frame-Options` header with the value of `DENY`. |
| `traefik.frontend.headers.customFrameOptionsValue=VALUE` | Overrides the `X-Frame-Options` header with the custom value. |
| `traefik.frontend.headers.contentTypeNosniff=true` | Adds the `X-Content-Type-Options` header with the value `nosniff`. |
| `traefik.frontend.headers.browserXSSFilter=true` | Adds the X-XSS-Protection header with the value `1; mode=block`. |
| `traefik.frontend.headers.customBrowserXSSValue=VALUE` | Set custom value for X-XSS-Protection header. This overrides the BrowserXssFilter option. |
| `traefik.frontend.headers.contentSecurityPolicy=VALUE` | Adds CSP Header with the custom value. |
| `traefik.frontend.headers.publicKey=VALUE` | Adds HPKP header. |
| `traefik.frontend.headers.referrerPolicy=VALUE` | Adds referrer policy header. |
| `traefik.frontend.headers.isDevelopment=false` | This will cause the `AllowedHosts`, `SSLRedirect`, and `STSSeconds`/`STSIncludeSubdomains` options to be ignored during development.<br>When deploying to production, be sure to set this to false. |

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# Zookeeper Provider
Traefik can be configured to use Zookeeper as a provider.
```toml
################################################################
# Zookeeper Provider
################################################################
# Enable Zookeeper Provider.
[zookeeper]
# Zookeeper server endpoint.
#
# Required
# Default: "127.0.0.1:2181"
#
endpoint = "127.0.0.1:2181"
# Enable watch Zookeeper changes.
#
# Optional
# Default: true
#
watch = true
# Prefix used for KV store.
#
# Optional
# Default: "traefik"
#
prefix = "traefik"
# Override default configuration template.
# For advanced users :)
#
# Optional
#
# filename = "zookeeper.tmpl"
# Use Zookeeper user/pass authentication.
#
# Optional
#
# username = foo
# password = bar
# Enable Zookeeper TLS connection.
#
# Optional
#
# [zookeeper.tls]
# ca = "/etc/ssl/ca.crt"
# cert = "/etc/ssl/zookeeper.crt"
# key = "/etc/ssl/zookeeper.key"
# insecureSkipVerify = true
```
To enable constraints see [provider-specific constraints section](/configuration/commons/#provider-specific).
Please refer to the [Key Value storage structure](/user-guide/kv-config/#key-value-storage-structure) section to get documentation on Traefik KV structure.