[v12] Fix Kubernetes Legacy Proxy heartbeats#29737
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tigrato merged 1 commit intobranch/v12from Jul 28, 2023
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espadolini
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rosstimothy
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When a Teleport Kubernetes Proxy runs in legacy mode - i.e. - spec enables `proxy_service.kubernetes.enabled`, the proxy is capable of proxy requests to a target Kubernetes cluster instead of forwarding them to a Teleport Kubernetes Service.
The following config enables the legacy proxy mode in proxy:
```yaml
proxy_service:
enabled: yes
web_listen_addr: 0.0.0.0:3080
public_addr: tele.local:3080
kubernetes:
enabled: yes
listen_addr: 0.0.0.0:3026
kubeconfig_file: path # optional
```
Because the proxy forwards and heartbeat the configured Kube clusters, it needs permissions to upsert the kube cluster in auth's backend and to extend its expiration date.
This PR fixes a problem introduced in Teleport 8 where the proxy is allowed to upsert the kube server, but it's not allowed to extend the expiration time.
When the request fails, the proxy becomes degraded and the performance is affected.
Signed-off-by: Tiago Silva <tiago.silva@goteleport.com>
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Backport of #29733 to branch/v12
This PR is slightly different than the one merged into master because branch/v12 and branch/v11 still support the KubeService objects and they have a different name
{hostID}-proxy_service