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Reintroduce dropped v2 dynamic config

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Co-authored-by: Baptiste Mayelle <baptiste.mayelle@traefik.io>
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Romain 2024-01-29 17:32:05 +01:00 • committed by GitHub
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docs/content/routing/services/index.md
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@ -1617,6 +1617,46 @@ Below are the available options for the PROXY protocol:
version = 1
```
#### Termination Delay
!!! warning
Deprecated in favor of [`serversTransport.terminationDelay`](#terminationdelay).
Please note that if any `serversTransport` configuration on the servers load balancer is found,
it will take precedence over the servers load balancer `terminationDelay` value,
even if the `serversTransport.terminationDelay` is undefined.
As a proxy between a client and a server, it can happen that either side (e.g. client side) decides to terminate its writing capability on the connection (i.e. issuance of a FIN packet).
The proxy needs to propagate that intent to the other side, and so when that happens, it also does the same on its connection with the other side (e.g. backend side).
However, if for some reason (bad implementation, or malicious intent) the other side does not eventually do the same as well,
the connection would stay half-open, which would lock resources for however long.
To that end, as soon as the proxy enters this termination sequence, it sets a deadline on fully terminating the connections on both sides.
The termination delay controls that deadline.
It is a duration in milliseconds, defaulting to 100.
A negative value means an infinite deadline (i.e. the connection is never fully terminated by the proxy itself).
??? example "A Service with a termination delay -- Using the [File Provider](../../providers/file.md)"
```yaml tab="YAML"
## Dynamic configuration
tcp:
services:
my-service:
loadBalancer:
terminationDelay: 200
```
```toml tab="TOML"
## Dynamic configuration
[tcp.services]
[tcp.services.my-service.loadBalancer]
[[tcp.services.my-service.loadBalancer]]
terminationDelay = 200
```
### Weighted Round Robin
The Weighted Round Robin (alias `WRR`) load-balancer of services is in charge of balancing the requests between multiple services based on provided weights.