推荐工具
kubectx
kubectx:用来切换集群的访问
kubens:用来切换默认的namespace
kubectl-aliases
kubectl命令别名
自动完成
zsh
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source <(kubectl completion zsh) # setup autocomplete in zsh into the current shell
echo "if [ $commands[kubectl] ]; then source <(kubectl completion zsh); fi" >> ~/.zshrc # add autocomplete permanently to your zsh shell
其他的方式见kubectl Cheat Sheet
kubectl常用命令
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kubectl api-resources --namespaced=false
kubectl api-resources --namespaced=true
# -R表示递归目录下所有配置
kubectl apply -R -f configs/
kubectl get cs
kubectl get svc --sort-by=.metadata.creationTimestamp
# 查看节点
kubectl get no --sort-by=.metadata.creationTimestamp
kubectl drain <node-name>
kubectl taint nodes node1 key=value:NoSchedule
kubectl get ing pdd --n java
# 不调度
kubectl cluster-info dump
kubectl get po --field-selector spec.nodeName=xxxx
kubectl exec -it ng-57d74c8694-6cqnz sh -n=java
kubectl get pods --all-namespaces --field-selector spec.nodeName=<node> -o wide
kubectl get pods -o wide --all-namespaces
kubectl get po -l app=nginx -w
kubectl delete po -l app=onekey-ali-web -n=$(namespace)
kubectl get po --all-namespaces
# 查看异常pod
kubectl get po --all-namespaces --field-selector 'status.phase!=Running'
集群管理相关命令
应用管理相关
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kubectl top pod
kubectl delete deployment,services -l app=nginx
kubectl scale deployment/nginx-deployment --replicas=2
kubectl get svc --all-namespaces=true
kubectl rollout undo deployment/nginx-deployment --to-revision=2
kubectl autoscale deployment <deployment-name> --min=2 --max=5 --cpu-percent=80
#来watch ReplicaSet的变化。
kubectl get rs -w
kubectl set image deployment/nginx-deployment nginx=nginx:1.9.1
# deployment "nginx-deployment" image updated
kubectl set image deploy monitorapi-deployment monitorapi=registry-vpc.cn-shenzhen.aliyuncs.com/amiba/monitorapi:1.2.4 -n=java
强制删除
有时 删除pv/pvc时会有问题,这个使用得加2个命令参数--grace-period=0 --force
删除所有失败的pod
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kubectl get po --all-namespaces --field-selector 'status.phase==Failed'
kubectl delete po --field-selector 'status.phase==Failed'
#模糊删除pod
key=
kgpo -n default | grep $key | awk '{print $1}' | xargs kubectl delete po -n1 -n default
事件
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kubectl get events --field-selector involvedObject.kind=Service --sort-by='.metadata.creationTimestamp'
kubectl get event --all-namespaces --field-selector involvedObject.name=$po
参考链接: