calico node is keep restarting

[abbasahmed40]

these are the logs for calico node ..

2024-03-14 17:12:31.490 [INFO][67] felix/status_combiner.go 98: Reporting combined status. id=proto.WorkloadEndpointID{OrchestratorId:"k8s", WorkloadId:"kube-system/calico-kube-controllers-5bffccb9c6-s8pdn", EndpointId:"eth0"} status="up"
2024-03-14 17:12:32.317 [ERROR][67] felix/health.go 392: Health endpoint failed, trying to restart it... error=listen tcp: lookup localhost on 8.8.8.8:53: no such host
2024-03-14 17:12:33.382 [ERROR][67] felix/health.go 392: Health endpoint failed, trying to restart it... error=listen tcp: lookup localhost on 8.8.8.8:53: no such host
2024-03-14 17:12:34.453 [ERROR][67] felix/health.go 392: Health endpoint failed, trying to restart it... error=listen tcp: lookup localhost on 8.8.8.8:53: no such host
2024-03-14 17:12:35.521 [ERROR][67] felix/health.go 392: Health endpoint failed, trying to restart it... error=listen tcp: lookup localhost on 8.8.8.8:53: no such host
2024-03-14 17:12:36.582 [ERROR][67] felix/health.go 392: Health endpoint failed, trying to restart it... error=listen tcp: lookup localhost on 8.8.8.8:53: no such host
2024-03-14 17:12:37.647 [ERROR][67] felix/health.go 392: Health endpoint failed, trying to restart it... error=listen tcp: lookup localhost on 8.8.8.8:53: no such host
2024-03-14 17:12:38.714 [ERROR][67] felix/health.go 392: Health endpoint failed, trying to restart it... error=listen tcp: lookup localhost on 8.8.8.8:53: no such host
2024-03-14 17:12:39.778 [ERROR][67] felix/health.go 392: Health endpoint failed, trying to restart it... error=listen tcp: lookup localhost on 8.8.8.8:53: no such host
2024-03-14 17:12:40.845 [ERROR][67] felix/health.go 392: Health endpoint failed, trying to restart it... error=listen tcp: lookup localhost on 8.8.8.8:53: no such host
2024-03-14 17:12:41.919 [ERROR][67] felix/health.go 392: Health endpoint failed, trying to restart it... error=listen tcp: lookup localhost on 8.8.8.8:53: no such host
2024-03-14 17:12:42.984 [ERROR][67] felix/health.go 392: Health endpoint failed, trying to restart it... error=listen tcp: lookup localhost on 8.8.8.8:53: no such host

[abbasahmed40]

I am using calico version 3.26 and k8 version is 1.27.11

[petercorrea]

Im experiencing the exact issue, any work around?

[caseydavenport]

This looks like a problem with your pod's domain name resolution configuration.

Calico uses a health endpoint within the container which attempts to talk to the local felix daemon using localhost, which means it needs to resolve localhost to the local pod's interface. Normally I'd expect this to happen without DNS in the loop, e.g., via the container's /etc/hosts. However it's possible that your cluster is set up in such a way that this isn't happening.

https://kubernetes.io/docs/tasks/administer-cluster/dns-custom-nameservers/ https://kubernetes.io/docs/tasks/network/customize-hosts-file-for-pods/

Have you customized DNS or host resolution at all on the Calico pods?

[tomastigera]

@abbasahmed40 @petercorrea any update?

[abbasahmed40]

@caseydavenport thanks ,its working now