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Kubernetes命令

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  1. kubectl get 资源名 -> 简单描述
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kubectl get rc
kubectl get pods
kubectl get deployment
  1. kubectl describe 资源名 -> 详细信息
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kubectl describe rc
kubectl describe pods
kubectl describe deployment
  1. 一些命令
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kubectl get rc -o wide
kubectl logs kubia-cjrqd
kubectl get pods --show-labels
kubectl get rs  -o yaml| less  ## 可以看 status， annotations
kubectl get pods kubia-cjrqd -o yaml | less   ## 可以看 status， 可以看 OwnerReference

kubectl -n default get all   ## 可以看所有资源
  1. watch 状态
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kubectl get pods --watch
  1. Deployment 回滚
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kubectl rollout undo deployment/deployment-nginx
kubectl rollout undo deployment.v1.apps/deployment-nginx  --to-revision=2
  1. edit 命令: 直接修改k8s里的API对象
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kubectl edit pods kubia-cjrqd
kubectl edit deployment  nginx-deployment

  1. docker 磁盘使用情况

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    docker system df -v

    +Images space usage:

    REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE                SHARED SIZE         UNIQUE SIZE         CONTAINERS
    <none>              <none>              818d02f0fd5f        4 days ago          121.8MB             121.7MB             41.83kB             2
    maven               3-jdk-8-alpine      7445f83cd169        4 months ago        121.7MB             121.7MB             0B                  0

    +Containers space usage:

    CONTAINER ID        IMAGE               COMMAND                  LOCAL VOLUMES       SIZE                CREATED             STATUS                  NAMES
    79bf1498857f        818d02f0fd5f        "/bin/sh -c 'mvn pac…"   0                   460B                4 days ago          Exited (1) 4 days ago   elegant_ramanujan
    e6fcce289871        818d02f0fd5f        "/bin/sh -c 'mvn pac…"   0                   460B                4 days ago          Exited (1) 4 days ago   sleepy_lichterman

    +Local Volumes space usage:

    VOLUME NAME         LINKS               SIZE

    +Build cache usage: 0B

    CACHE ID            CACHE TYPE          SIZE                CREATED             LAST USED           USAGE               SHARED

  2. k8s node 不可调度/可调度

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    kubectl drain 10.23.210.145        // 不可调度
    kubectl uncordon 10.23.210.145     // 可调度

参考:#

  1. kubernetes 最佳实践：处理容器数据磁盘被写满