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Add evicted pods commands to troubleshooting

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Sebastiaan van Steenis
2018-12-27 14:21:24 +01:00
committed by Denise
parent c161f88f83
commit 75845e49a3
1 changed files with 23 additions and 1 deletions
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content/rancher/v2.x/en/troubleshooting/kubernetes-resources/_index.md
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@@ -112,7 +112,7 @@ kubectl -n ingress-nginx get events
### Rancher agents
Communication to the cluster (Kubernetes API via cattle-cluster-agent) and communication to the nodes (cluster provisioning via cattle-node-agent) is done through Rancher agents.
Communication to the cluster (Kubernetes API via `cattle-cluster-agent`) and communication to the nodes (cluster provisioning via `cattle-node-agent`) is done through Rancher agents.
#### cattle-node-agent
@@ -199,3 +199,25 @@ kubectl describe job JOB_NAME -n NAMESPACE
```
kubectl logs -l job-name=JOB_NAME -n NAMESPACE
```
#### Evicted pods
Pods can be evicted based on [eviction signals](https://kubernetes.io/docs/tasks/administer-cluster/out-of-resource/#eviction-policy).
Retrieve a list of evicted pods (podname and namespace):
```
kubectl get pods --all-namespaces -o go-template='{{range .items}}{{if eq .status.phase "Failed"}}{{if eq .status.reason "Evicted"}}{{.metadata.name}}{{" "}}{{.metadata.namespace}}{{"\n"}}{{end}}{{end}}{{end}}'
```
To delete all evicted pods:
```
kubectl get pods --all-namespaces -o go-template='{{range .items}}{{if eq .status.phase "Failed"}}{{if eq .status.reason "Evicted"}}{{.metadata.name}}{{" "}}{{.metadata.namespace}}{{"\n"}}{{end}}{{end}}{{end}}' | while read epod enamespace; do kubectl -n $enamespace delete pod $epod; done
```
Retrieve a list of evicted pods, scheduled node and the reason:
```
kubectl get pods --all-namespaces -o go-template='{{range .items}}{{if eq .status.phase "Failed"}}{{if eq .status.reason "Evicted"}}{{.metadata.name}}{{" "}}{{.metadata.namespace}}{{"\n"}}{{end}}{{end}}{{end}}' | while read epod enamespace; do kubectl -n $enamespace get pod $epod -o=custom-columns=NAME:.metadata.name,NODE:.spec.nodeName,MSG:.status.message; done
```