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kubectl FAQ

caution
  • secret 的 stringData 会进行合并，删除 stringData 字段不会删除实际 secret 字段

删除 Evicted 的 Pod​

  • status.phase=Fialed & state.reason=Evicted
  • Terminating -> Pending
kubectl get pods | grep Evicted | awk '{print $1}' | xargs kubectl delete pod

# 筛选查看
# reason Evicted
kubectl get pods --all-namespaces --field-selector="status.phase=Failed"
# 确认删除
kubectl delete pods --all-namespaces --field-selector="status.phase=Failed"

# kubectl get pods --all-namespaces --field-selector="status.phase=Pending" | awk '{print "-n " $1 " " $2}' | tail -n+2 | xargs kubectl delete pod --force

当前集群名字​

kubectl config view --minify -o=jsonpath='{.contexts[0].context.cluster}'

端口转发超时/端口转发重联​

  • 默认 5 分钟 超时
# 关闭超时
kubectl port-forward -n postgres-operator svc/postgres-operator-ui 8080:80 --request-timeout 0

Shell 循环

while :;do kubectl port-forward -n postgres-operator svc/postgres-operator-ui 8080:80; done

Windows BAT 循环

:1
oc port-forward PODNAME 8003:8080
goto 1

Kubernetes configuration file is group/world-readable​

chmod go-r ~/.kube/config
# or
chmod 600 ~/.kube/config