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2
docs/content/reference/install-configuration/entrypoints.md
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@ -97,7 +97,7 @@ additionalArguments:
| <a id="opt-http-encodeQuerySemicolons" href="#opt-http-encodeQuerySemicolons" title="#opt-http-encodeQuerySemicolons">`http.encodeQuerySemicolons`</a> | Enable query semicolons encoding. <br /> Use this option to avoid non-encoded semicolons to be interpreted as query parameter separators by Traefik. <br /> When using this option, the non-encoded semicolons characters in query will be transmitted encoded to the backend.<br /> More information [here](#encodequerysemicolons). | false | No |
| <a id="opt-http-sanitizePath" href="#opt-http-sanitizePath" title="#opt-http-sanitizePath">`http.sanitizePath`</a> | Defines whether to enable the request path sanitization.<br /> More information [here](#sanitizepath). | false | No |
| <a id="opt-http-middlewares" href="#opt-http-middlewares" title="#opt-http-middlewares">`http.middlewares`</a> | Set the list of middlewares that are prepended by default to the list of middlewares of each router associated to the named entry point. <br />More information [here](#httpmiddlewares). | - | No |
| <a id="opt-http-tls" href="#opt-http-tls" title="#opt-http-tls">`http.tls`</a> | Enable TLS on every router attached to the `entryPoint`. <br /> If no certificate are set, a default self-signed certificate is generates by Traefik. <br /> We recommend to not use self signed certificates in production. | - | No |
| <a id="opt-http-tls" href="#opt-http-tls" title="#opt-http-tls">`http.tls`</a> | Enable TLS on every router attached to the `entryPoint`. <br /> If no certificate are set, a default self-signed certificate is generated by Traefik. <br /> We recommend to not use self signed certificates in production. | - | No |
| <a id="opt-http-tls-options" href="#opt-http-tls-options" title="#opt-http-tls-options">`http.tls.options`</a> | Apply TLS options on every router attached to the `entryPoint`. <br /> The TLS options can be overidden per router. <br /> More information in the [dedicated section](../../routing/providers/kubernetes-crd.md#kind-tlsoption). | - | No |
| <a id="opt-http-tls-certResolver" href="#opt-http-tls-certResolver" title="#opt-http-tls-certResolver">`http.tls.certResolver`</a> | Apply a certificate resolver on every router attached to the `entryPoint`. <br /> The TLS options can be overidden per router. <br /> More information in the [dedicated section](../install-configuration/tls/certificate-resolvers/overview.md). | - | No |
| <a id="opt-http2-maxConcurrentStreams" href="#opt-http2-maxConcurrentStreams" title="#opt-http2-maxConcurrentStreams">`http2.maxConcurrentStreams`</a> | Set the number of concurrent streams per connection that each client is allowed to initiate. <br /> The value must be greater than zero. | 250 | No |

39
docs/content/reference/install-configuration/observability/logs-and-accesslogs.md
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@ -65,6 +65,9 @@ experimental:
!!! warning
This is an experimental feature.
!!! note "Stdio logs remain available"
When OTLP logging is enabled, standard output (stdio) logs are still available and will continue to be written alongside OTLP exports.
#### Configuration Example
```yaml tab="File (YAML)"
@ -99,7 +102,7 @@ log:
| Field | Description | Default | Required |
|:---------------------------------------|:---------------------------------------------------------------------------------------------------------------------------------------|:---------------------------------|:---------|
| <a id="opt-log-otlp-serviceName" href="#opt-log-otlp-serviceName" title="#opt-log-otlp-serviceName">`log.otlp.serviceName`</a> | Service name used in selected backend. | "traefik" | No |
| <a id="opt-log-otlp-resourceAttributes" href="#opt-log-otlp-resourceAttributes" title="#opt-log-otlp-resourceAttributes">`log.otlp.resourceAttributes`</a> | Defines additional resource attributes to be sent to the collector. | [] | No |
| <a id="opt-log-otlp-resourceAttributes" href="#opt-log-otlp-resourceAttributes" title="#opt-log-otlp-resourceAttributes">`log.otlp.resourceAttributes`</a> | Defines additional resource attributes to be sent to the collector. See [resourceAttributes](#resourceattributes) for details. | [] | No |
| <a id="opt-log-otlp-http" href="#opt-log-otlp-http" title="#opt-log-otlp-http">`log.otlp.http`</a> | This instructs the exporter to send logs to the OpenTelemetry Collector using HTTP. | | No |
| <a id="opt-log-otlp-http-endpoint" href="#opt-log-otlp-http-endpoint" title="#opt-log-otlp-http-endpoint">`log.otlp.http.endpoint`</a> | The endpoint of the OpenTelemetry Collector. (format=`<scheme>://<host>:<port><path>`) | `https://localhost:4318/v1/logs` | No |
| <a id="opt-log-otlp-http-headers" href="#opt-log-otlp-http-headers" title="#opt-log-otlp-http-headers">`log.otlp.http.headers`</a> | Additional headers sent with logs by the exporter to the OpenTelemetry Collector. | [ ] | No |
@ -118,6 +121,22 @@ log:
| <a id="opt-log-otlp-grpc-tls-key" href="#opt-log-otlp-grpc-tls-key" title="#opt-log-otlp-grpc-tls-key">`log.otlp.grpc.tls.key`</a> | The path to the key to use for the OpenTelemetry Collector. | | No |
| <a id="opt-log-otlp-grpc-tls-insecureSkipVerify" href="#opt-log-otlp-grpc-tls-insecureSkipVerify" title="#opt-log-otlp-grpc-tls-insecureSkipVerify">`log.otlp.grpc.tls.insecureSkipVerify`</a> | Instructs the OpenTelemetry Collector to accept any certificate presented by the server regardless of the hostname in the certificate. | false | No |
#### resourceAttributes
The `resourceAttributes` option allows setting the resource attributes sent along the traces.
Traefik also supports the `OTEL_RESOURCE_ATTRIBUTES` env variable to set up the resource attributes.
!!! info "Kubernetes Resource Attributes Detection"
Additionally, Traefik automatically discovers the following [Kubernetes resource attributes](https://opentelemetry.io/docs/specs/semconv/non-normative/k8s-attributes/) when running in a Kubernetes cluster:
- `k8s.namespace.name`
- `k8s.pod.uid`
- `k8s.pod.name`
Note that this automatic detection can fail, like if the Traefik pod is running in host network mode.
In this case, you should provide the attributes with the option or the env variable.
## AccessLogs
Access logs concern everything that happens to the requests handled by Traefik.
@ -260,7 +279,7 @@ accesslog:
| Field | Description | Default | Required |
|:---------------------------------------------|:---------------------------------------------------------------------------------------------------------------------------------------|:---------------------------------|:---------|
| <a id="opt-accesslog-otlp-serviceName" href="#opt-accesslog-otlp-serviceName" title="#opt-accesslog-otlp-serviceName">`accesslog.otlp.serviceName`</a> | Defines the service name resource attribute. | "traefik" | No |
| <a id="opt-accesslog-otlp-resourceAttributes" href="#opt-accesslog-otlp-resourceAttributes" title="#opt-accesslog-otlp-resourceAttributes">`accesslog.otlp.resourceAttributes`</a> | Defines additional resource attributes to be sent to the collector. | [] | No |
| <a id="opt-accesslog-otlp-resourceAttributes" href="#opt-accesslog-otlp-resourceAttributes" title="#opt-accesslog-otlp-resourceAttributes">`accesslog.otlp.resourceAttributes`</a> | Defines additional resource attributes to be sent to the collector. See [resourceAttributes](#resourceattributes_1) for details. | [] | No |
| <a id="opt-accesslog-otlp-http" href="#opt-accesslog-otlp-http" title="#opt-accesslog-otlp-http">`accesslog.otlp.http`</a> | This instructs the exporter to send access logs to the OpenTelemetry Collector using HTTP. | | No |
| <a id="opt-accesslog-otlp-http-endpoint" href="#opt-accesslog-otlp-http-endpoint" title="#opt-accesslog-otlp-http-endpoint">`accesslog.otlp.http.endpoint`</a> | The endpoint of the OpenTelemetry Collector. (format=`<scheme>://<host>:<port><path>`) | `https://localhost:4318/v1/logs` | No |
| <a id="opt-accesslog-otlp-http-headers" href="#opt-accesslog-otlp-http-headers" title="#opt-accesslog-otlp-http-headers">`accesslog.otlp.http.headers`</a> | Additional headers sent with access logs by the exporter to the OpenTelemetry Collector. | [ ] | No |
@ -279,6 +298,22 @@ accesslog:
| <a id="opt-accesslog-otlp-grpc-tls-key" href="#opt-accesslog-otlp-grpc-tls-key" title="#opt-accesslog-otlp-grpc-tls-key">`accesslog.otlp.grpc.tls.key`</a> | The path to the key to use for the OpenTelemetry Collector. | | No |
| <a id="opt-accesslog-otlp-grpc-tls-insecureSkipVerify" href="#opt-accesslog-otlp-grpc-tls-insecureSkipVerify" title="#opt-accesslog-otlp-grpc-tls-insecureSkipVerify">`accesslog.otlp.grpc.tls.insecureSkipVerify`</a> | Instructs the OpenTelemetry Collector to accept any certificate presented by the server regardless of the hostname in the certificate. | false | No |
#### resourceAttributes
The `resourceAttributes` option allows setting the resource attributes sent along the traces.
Traefik also supports the `OTEL_RESOURCE_ATTRIBUTES` env variable to set up the resource attributes.
!!! info "Kubernetes Resource Attributes Detection"
Additionally, Traefik automatically discovers the following [Kubernetes resource attributes](https://opentelemetry.io/docs/specs/semconv/non-normative/k8s-attributes/) when running in a Kubernetes cluster:
- `k8s.namespace.name`
- `k8s.pod.uid`
- `k8s.pod.name`
Note that this automatic detection can fail, like if the Traefik pod is running in host network mode.
In this case, you should provide the attributes with the option or the env variable.
### Traefik CLF format fields
It's the default format provided by Traefik.

18
docs/content/reference/install-configuration/observability/metrics.md
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@ -64,7 +64,7 @@ metrics:
|:-------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------|:---------------------------------------------------|:---------|
| <a id="opt-metrics-addInternals" href="#opt-metrics-addInternals" title="#opt-metrics-addInternals">`metrics.addInternals`</a> | Enables metrics for internal resources (e.g.: `ping@internal`). | false | No |
| <a id="opt-metrics-otlp-serviceName" href="#opt-metrics-otlp-serviceName" title="#opt-metrics-otlp-serviceName">`metrics.otlp.serviceName`</a> | Defines the service name resource attribute. | "traefik" | No |
| <a id="opt-metrics-otlp-resourceAttributes" href="#opt-metrics-otlp-resourceAttributes" title="#opt-metrics-otlp-resourceAttributes">`metrics.otlp.resourceAttributes`</a> | Defines additional resource attributes to be sent to the collector. | [] | No |
| <a id="opt-metrics-otlp-resourceAttributes" href="#opt-metrics-otlp-resourceAttributes" title="#opt-metrics-otlp-resourceAttributes">`metrics.otlp.resourceAttributes`</a> | Defines additional resource attributes to be sent to the collector. See [resourceAttributes](#resourceattributes) for details. | [] | No |
| <a id="opt-metrics-otlp-addEntryPointsLabels" href="#opt-metrics-otlp-addEntryPointsLabels" title="#opt-metrics-otlp-addEntryPointsLabels">`metrics.otlp.addEntryPointsLabels`</a> | Enable metrics on entry points. | true | No |
| <a id="opt-metrics-otlp-addRoutersLabels" href="#opt-metrics-otlp-addRoutersLabels" title="#opt-metrics-otlp-addRoutersLabels">`metrics.otlp.addRoutersLabels`</a> | Enable metrics on routers. | false | No |
| <a id="opt-metrics-otlp-addServicesLabels" href="#opt-metrics-otlp-addServicesLabels" title="#opt-metrics-otlp-addServicesLabels">`metrics.otlp.addServicesLabels`</a> | Enable metrics on services. | true | No |
@ -86,6 +86,22 @@ metrics:
| <a id="opt-metrics-otlp-grpc-tls-key" href="#opt-metrics-otlp-grpc-tls-key" title="#opt-metrics-otlp-grpc-tls-key">`metrics.otlp.grpc.tls.key`</a> | This instructs the exporter to send the metrics to the OpenTelemetry Collector using HTTP.<br /> Setting the sub-options with their default values. | null/false | No |
| <a id="opt-metrics-otlp-grpc-tls-insecureskipverify" href="#opt-metrics-otlp-grpc-tls-insecureskipverify" title="#opt-metrics-otlp-grpc-tls-insecureskipverify">`metrics.otlp.grpc.tls.insecureskipverify`</a> | Allow the TLS connection to the OpenTelemetry Collector accepts any certificate presented by the server regardless of the hostnames it covers. | false | Yes |
### resourceAttributes
The `resourceAttributes` option allows setting the resource attributes sent along the traces.
Traefik also supports the `OTEL_RESOURCE_ATTRIBUTES` env variable to set up the resource attributes.
!!! info "Kubernetes Resource Attributes Detection"
Additionally, Traefik automatically discovers the following [Kubernetes resource attributes](https://opentelemetry.io/docs/specs/semconv/non-normative/k8s-attributes/) when running in a Kubernetes cluster:
- `k8s.namespace.name`
- `k8s.pod.uid`
- `k8s.pod.name`
Note that this automatic detection can fail, like if the Traefik pod is running in host network mode.
In this case, you should provide the attributes with the option or the env variable.
## Vendors
### Datadog

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docs/content/reference/install-configuration/observability/tracing.md
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@ -36,27 +36,43 @@ tracing: {}
## Configuration Options
| Field | Description | Default | Required |
|:-------------------------------------------|:----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|:-----------------------------------|:---------|
| <a id="opt-tracing-addInternals" href="#opt-tracing-addInternals" title="#opt-tracing-addInternals">`tracing.addInternals`</a> | Enables tracing for internal resources (e.g.: `ping@internal`). | false | No |
| <a id="opt-tracing-serviceName" href="#opt-tracing-serviceName" title="#opt-tracing-serviceName">`tracing.serviceName`</a> | Defines the service name resource attribute. | "traefik" | No |
| <a id="opt-tracing-resourceAttributes" href="#opt-tracing-resourceAttributes" title="#opt-tracing-resourceAttributes">`tracing.resourceAttributes`</a> | Defines additional resource attributes to be sent to the collector. | [] | No |
| <a id="opt-tracing-sampleRate" href="#opt-tracing-sampleRate" title="#opt-tracing-sampleRate">`tracing.sampleRate`</a> | The proportion of requests to trace, specified between 0.0 and 1.0. | 1.0 | No |
| <a id="opt-tracing-capturedRequestHeaders" href="#opt-tracing-capturedRequestHeaders" title="#opt-tracing-capturedRequestHeaders">`tracing.capturedRequestHeaders`</a> | Defines the list of request headers to add as attributes.<br />It applies to client and server kind spans. | [] | No |
| <a id="opt-tracing-capturedResponseHeaders" href="#opt-tracing-capturedResponseHeaders" title="#opt-tracing-capturedResponseHeaders">`tracing.capturedResponseHeaders`</a> | Defines the list of response headers to add as attributes.<br />It applies to client and server kind spans. | [] | False |
| <a id="opt-tracing-safeQueryParams" href="#opt-tracing-safeQueryParams" title="#opt-tracing-safeQueryParams">`tracing.safeQueryParams`</a> | By default, all query parameters are redacted.<br />Defines the list of query parameters to not redact. | [] | No |
| <a id="opt-tracing-otlp-http" href="#opt-tracing-otlp-http" title="#opt-tracing-otlp-http">`tracing.otlp.http`</a> | This instructs the exporter to send the tracing to the OpenTelemetry Collector using HTTP.<br /> Setting the sub-options with their default values. | null/false | No |
| Field | Description | Default | Required |
|:---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|:----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|:------------------------------------|:---------|
| <a id="opt-tracing-addInternals" href="#opt-tracing-addInternals" title="#opt-tracing-addInternals">`tracing.addInternals`</a> | Enables tracing for internal resources (e.g.: `ping@internal`). | false | No |
| <a id="opt-tracing-serviceName" href="#opt-tracing-serviceName" title="#opt-tracing-serviceName">`tracing.serviceName`</a> | Defines the service name resource attribute. | "traefik" | No |
| <a id="opt-tracing-resourceAttributes" href="#opt-tracing-resourceAttributes" title="#opt-tracing-resourceAttributes">`tracing.resourceAttributes`</a> | Defines additional resource attributes to be sent to the collector. See [resourceAttributes](#resourceattributes) for details. | [] | No |
| <a id="opt-tracing-sampleRate" href="#opt-tracing-sampleRate" title="#opt-tracing-sampleRate">`tracing.sampleRate`</a> | The proportion of requests to trace, specified between 0.0 and 1.0. | 1.0 | No |
| <a id="opt-tracing-capturedRequestHeaders" href="#opt-tracing-capturedRequestHeaders" title="#opt-tracing-capturedRequestHeaders">`tracing.capturedRequestHeaders`</a> | Defines the list of request headers to add as attributes.<br />It applies to client and server kind spans. | [] | No |
| <a id="opt-tracing-capturedResponseHeaders" href="#opt-tracing-capturedResponseHeaders" title="#opt-tracing-capturedResponseHeaders">`tracing.capturedResponseHeaders`</a> | Defines the list of response headers to add as attributes.<br />It applies to client and server kind spans. | [] | False |
| <a id="opt-tracing-safeQueryParams" href="#opt-tracing-safeQueryParams" title="#opt-tracing-safeQueryParams">`tracing.safeQueryParams`</a> | By default, all query parameters are redacted.<br />Defines the list of query parameters to not redact. | [] | No |
| <a id="opt-tracing-otlp-http" href="#opt-tracing-otlp-http" title="#opt-tracing-otlp-http">`tracing.otlp.http`</a> | This instructs the exporter to send the tracing to the OpenTelemetry Collector using HTTP.<br /> Setting the sub-options with their default values. | null/false | No |
| <a id="opt-tracing-otlp-http-endpoint" href="#opt-tracing-otlp-http-endpoint" title="#opt-tracing-otlp-http-endpoint">`tracing.otlp.http.endpoint`</a> | URL of the OpenTelemetry Collector to send tracing to.<br /> Format="`<scheme>://<host>:<port><path>`" | "https://localhost:4318/v1/tracing" | Yes |
| <a id="opt-tracing-otlp-http-headers" href="#opt-tracing-otlp-http-headers" title="#opt-tracing-otlp-http-headers">`tracing.otlp.http.headers`</a> | Additional headers sent with tracing by the exporter to the OpenTelemetry Collector. | | No |
| <a id="opt-tracing-otlp-http-tls-ca" href="#opt-tracing-otlp-http-tls-ca" title="#opt-tracing-otlp-http-tls-ca">`tracing.otlp.http.tls.ca`</a> | Path to the certificate authority used for the secure connection to the OpenTelemetry Collector, it defaults to the system bundle. | "" | No |
| <a id="opt-tracing-otlp-http-tls-cert" href="#opt-tracing-otlp-http-tls-cert" title="#opt-tracing-otlp-http-tls-cert">`tracing.otlp.http.tls.cert`</a> | Path to the public certificate used for the secure connection to the OpenTelemetry Collector. When using this option, setting the `key` option is required. | "" | No |
| <a id="opt-tracing-otlp-http-tls-key" href="#opt-tracing-otlp-http-tls-key" title="#opt-tracing-otlp-http-tls-key">`tracing.otlp.http.tls.key`</a> | This instructs the exporter to send the tracing to the OpenTelemetry Collector using HTTP.<br /> Setting the sub-options with their default values. | ""null/false "" | No |
| <a id="opt-tracing-otlp-http-tls-insecureskipverify" href="#opt-tracing-otlp-http-tls-insecureskipverify" title="#opt-tracing-otlp-http-tls-insecureskipverify">`tracing.otlp.http.tls.insecureskipverify`</a> | If `insecureSkipVerify` is `true`, the TLS connection to the OpenTelemetry Collector accepts any certificate presented by the server regardless of the hostnames it covers. | false | Yes |
| <a id="opt-tracing-otlp-grpc" href="#opt-tracing-otlp-grpc" title="#opt-tracing-otlp-grpc">`tracing.otlp.grpc`</a> | This instructs the exporter to send tracing to the OpenTelemetry Collector using gRPC. | false | No |
| <a id="opt-tracing-otlp-grpc-endpoint" href="#opt-tracing-otlp-grpc-endpoint" title="#opt-tracing-otlp-grpc-endpoint">`tracing.otlp.grpc.endpoint`</a> | Address of the OpenTelemetry Collector to send tracing to.<br /> Format="`<host>:<port>`" | "localhost:4317" | Yes |
| <a id="opt-tracing-otlp-grpc-headers" href="#opt-tracing-otlp-grpc-headers" title="#opt-tracing-otlp-grpc-headers">`tracing.otlp.grpc.headers`</a> | Additional headers sent with tracing by the exporter to the OpenTelemetry Collector. | [] | No |
| <a id="opt-tracing-otlp-grpc-insecure" href="#opt-tracing-otlp-grpc-insecure" title="#opt-tracing-otlp-grpc-insecure">`tracing.otlp.grpc.insecure`</a> | Allows exporter to send tracing to the OpenTelemetry Collector without using a secured protocol. | false | Yes |
| <a id="opt-tracing-otlp-grpc-tls-ca" href="#opt-tracing-otlp-grpc-tls-ca" title="#opt-tracing-otlp-grpc-tls-ca">`tracing.otlp.grpc.tls.ca`</a> | Path to the certificate authority used for the secure connection to the OpenTelemetry Collector, it defaults to the system bundle. | "" | No |
| <a id="opt-tracing-otlp-grpc-tls-cert" href="#opt-tracing-otlp-grpc-tls-cert" title="#opt-tracing-otlp-grpc-tls-cert">`tracing.otlp.grpc.tls.cert`</a> | Path to the public certificate used for the secure connection to the OpenTelemetry Collector. When using this option, setting the `key` option is required. | "" | No |
| <a id="opt-tracing-otlp-grpc-tls-key" href="#opt-tracing-otlp-grpc-tls-key" title="#opt-tracing-otlp-grpc-tls-key">`tracing.otlp.grpc.tls.key`</a> | This instructs the exporter to send the tracing to the OpenTelemetry Collector using HTTP.<br /> Setting the sub-options with their default values. | ""null/false "" | No |
| <a id="opt-tracing-otlp-grpc-tls-insecureskipverify" href="#opt-tracing-otlp-grpc-tls-insecureskipverify" title="#opt-tracing-otlp-grpc-tls-insecureskipverify">`tracing.otlp.grpc.tls.insecureskipverify`</a> | If `insecureSkipVerify` is `true`, the TLS connection to the OpenTelemetry Collector accepts any certificate presented by the server regardless of the hostnames it covers. | false | Yes |
| <a id="opt-tracing-otlp-http-headers" href="#opt-tracing-otlp-http-headers" title="#opt-tracing-otlp-http-headers">`tracing.otlp.http.headers`</a> | Additional headers sent with tracing by the exporter to the OpenTelemetry Collector. | | No |
| <a id="opt-tracing-otlp-http-tls-ca" href="#opt-tracing-otlp-http-tls-ca" title="#opt-tracing-otlp-http-tls-ca">`tracing.otlp.http.tls.ca`</a> | Path to the certificate authority used for the secure connection to the OpenTelemetry Collector, it defaults to the system bundle. | "" | No |
| <a id="opt-tracing-otlp-http-tls-cert" href="#opt-tracing-otlp-http-tls-cert" title="#opt-tracing-otlp-http-tls-cert">`tracing.otlp.http.tls.cert`</a> | Path to the public certificate used for the secure connection to the OpenTelemetry Collector. When using this option, setting the `key` option is required. | "" | No |
| <a id="opt-tracing-otlp-http-tls-key" href="#opt-tracing-otlp-http-tls-key" title="#opt-tracing-otlp-http-tls-key">`tracing.otlp.http.tls.key`</a> | This instructs the exporter to send the tracing to the OpenTelemetry Collector using HTTP.<br /> Setting the sub-options with their default values. | ""null/false "" | No |
| <a id="opt-tracing-otlp-http-tls-insecureskipverify" href="#opt-tracing-otlp-http-tls-insecureskipverify" title="#opt-tracing-otlp-http-tls-insecureskipverify">`tracing.otlp.http.tls.insecureskipverify`</a> | If `insecureSkipVerify` is `true`, the TLS connection to the OpenTelemetry Collector accepts any certificate presented by the server regardless of the hostnames it covers. | false | Yes |
| <a id="opt-tracing-otlp-grpc" href="#opt-tracing-otlp-grpc" title="#opt-tracing-otlp-grpc">`tracing.otlp.grpc`</a> | This instructs the exporter to send tracing to the OpenTelemetry Collector using gRPC. | false | No |
| <a id="opt-tracing-otlp-grpc-endpoint" href="#opt-tracing-otlp-grpc-endpoint" title="#opt-tracing-otlp-grpc-endpoint">`tracing.otlp.grpc.endpoint`</a> | Address of the OpenTelemetry Collector to send tracing to.<br /> Format="`<host>:<port>`" | "localhost:4317" | Yes |
| <a id="opt-tracing-otlp-grpc-headers" href="#opt-tracing-otlp-grpc-headers" title="#opt-tracing-otlp-grpc-headers">`tracing.otlp.grpc.headers`</a> | Additional headers sent with tracing by the exporter to the OpenTelemetry Collector. | [] | No |
| <a id="opt-tracing-otlp-grpc-insecure" href="#opt-tracing-otlp-grpc-insecure" title="#opt-tracing-otlp-grpc-insecure">`tracing.otlp.grpc.insecure`</a> | Allows exporter to send tracing to the OpenTelemetry Collector without using a secured protocol. | false | Yes |
| <a id="opt-tracing-otlp-grpc-tls-ca" href="#opt-tracing-otlp-grpc-tls-ca" title="#opt-tracing-otlp-grpc-tls-ca">`tracing.otlp.grpc.tls.ca`</a> | Path to the certificate authority used for the secure connection to the OpenTelemetry Collector, it defaults to the system bundle. | "" | No |
| <a id="opt-tracing-otlp-grpc-tls-cert" href="#opt-tracing-otlp-grpc-tls-cert" title="#opt-tracing-otlp-grpc-tls-cert">`tracing.otlp.grpc.tls.cert`</a> | Path to the public certificate used for the secure connection to the OpenTelemetry Collector. When using this option, setting the `key` option is required. | "" | No |
| <a id="opt-tracing-otlp-grpc-tls-key" href="#opt-tracing-otlp-grpc-tls-key" title="#opt-tracing-otlp-grpc-tls-key">`tracing.otlp.grpc.tls.key`</a> | This instructs the exporter to send the tracing to the OpenTelemetry Collector using HTTP.<br /> Setting the sub-options with their default values. | ""null/false "" | No |
| <a id="opt-tracing-otlp-grpc-tls-insecureskipverify" href="#opt-tracing-otlp-grpc-tls-insecureskipverify" title="#opt-tracing-otlp-grpc-tls-insecureskipverify">`tracing.otlp.grpc.tls.insecureskipverify`</a> | If `insecureSkipVerify` is `true`, the TLS connection to the OpenTelemetry Collector accepts any certificate presented by the server regardless of the hostnames it covers. | false | Yes |
## resourceAttributes
The `resourceAttributes` option allows setting the resource attributes sent along the traces.
Traefik also supports the `OTEL_RESOURCE_ATTRIBUTES` env variable to set up the resource attributes.
!!! info "Kubernetes Resource Attributes Detection"
Additionally, Traefik automatically discovers the following [Kubernetes resource attributes](https://opentelemetry.io/docs/specs/semconv/non-normative/k8s-attributes/) when running in a Kubernetes cluster:
- `k8s.namespace.name`
- `k8s.pod.uid`
- `k8s.pod.name`
Note that this automatic detection can fail, like if the Traefik pod is running in host network mode.
In this case, you should provide the attributes with the option or the env variable.