常用操作

  1. [查看版本]
  3. $ kubectl  version
  5. Client Version: version.Info
  6. {
  7.     Major: "1",
  8.     Minor: "5",
  9.     GitVersion: "v1.5.2",
  10.     GitCommit: "269f928217957e7126dc87e6adfa82242bfe5b1e",
  11.     GitTreeState: "clean",
  12.     BuildDate: "2017-07-03T15:31:10Z",
  13.     GoVersion: "go1.7.4",
  14.     Compiler: "gc",
  15.     Platform: "linux/amd64"
  16. }
  18. Server Version: version.Info
  19. {
  20.     Major: "1",
  21.     Minor: "5",
  22.     GitVersion: "v1.5.2",
  23.     GitCommit: "269f928217957e7126dc87e6adfa82242bfe5b1e",
  24.     GitTreeState: "clean",
  25.     BuildDate: "2017-07-03T15:31:10Z",
  26.     GoVersion: "go1.7.4",
  27.     Compiler: "gc",
  28.     Platform: "linux/amd64"
  29. }
  31. [显示集群信息]
  33. $ kubectl cluster-info
  35. Kubernetes master is running at http://localhost:8080
  37. To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.

NODE

  1. [查看集群Node数量]
  3. $ kubectl get nodes
  5. NAME         STATUS    AGE
  6. k8s-node-1   Ready     1h

POD

  1. [查看POD]
  2. $ kubectl  get pods
  4. NAME                         READY     STATUS              RESTARTS   AGE
  5. my-nginx-379829228-cwlbb   0/1       ContainerCreating   0          20s
  6. my-nginx-379829228-czk6w   1/1       Running             0          20s
  7. http-706590874-bj47j         0/1       Terminating         0          24m
  9. [删除POD -> 根据配置，会自动生成]
  11. $ kubectl delete pod my-nginx-379829228-cwlbb
  13. []
  15. $ 删除部署的my-nginx服务。彻底删除pod
  17. [查看 POD 服务详情信息]
  19. $ kubectl  describe pod http-706590874-bj47j
  21. Name:                http-706590874-bj47j
  22. Namespace:            default
  23. Node:                k8s-node-1/
  24. Labels:                pod-template-hash=706590874
  25.                 run=http
  26. Status:                Terminating (expires Sun, 09 Jun 2019 21:08:00 +0800)
  27. Termination Grace Period:    30s
  28. IP:                
  29. Controllers:            ReplicaSet/http-706590874
  30. Containers:
  31.   http:
  32.     Image:            http
  33.     Port:            80/TCP
  34.     Volume Mounts:        <none>
  35.     Environment Variables:    <none>
  36. Conditions:
  37.   Type        Status
  38.   PodScheduled     True 
  39. No volumes.
  40. QoS Class:    BestEffort
  41. Tolerations:    <none>
  42. Events:
  43.   FirstSeen    LastSeen    Count    From            SubObjectPath    Type        Reason        Message
  44.   ---------    --------    -----    ----            -------------    --------    ------        -------
  45.   25m        25m        1    {default-scheduler }            Normal        Scheduled    Successfully assigned http-706590874-bj47j to k8s-node-1
  1. [查看已部署]
  3. $ kubectl get deployments
  5. NAME        DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
  6. http        1         1         1            0           26m
  7. my-nginx    1         1         1            0           11m
  9. [删除部署的服务, 彻底删除pod]
  11. $ kubectl delete deployment my-nginx

镜像运行

  1. [镜像运行]
  3. $ kubectl run my-nginx --image=nginx --replicas=2 --port=80
  1. # docker run
  2. $ docker run -d -e DOMAIN=cluster --name my-nginx -p 80:80 nginx
  3. $ kubectl run my-nginx --image=nginx --port=80 --env="DOMAIN=cluster"
  5. # docker ps 
  6. $ docker ps 
  7. $ kubectl get pods
  9. # docker exec
  10. $ docker exec [容器id] ls
  11. $ kubectl exec [pod_id] ls
  13. # docker exec 交互式
  14. $ docker exec -it [容器id] /bin/sh
  15. $ kubectl exec -it [pod_id] -- /bin/sh
  17. # docker info
  18. $ docker info 
  19. $ kubectl cluster-info