• 概述

  K8s的最小资源单位pod

• 创建pod配置文件

  apiVersion: v1
  kind: Pod
  metadata:
    name: nginx
    labels:
      app: web
  spec:
    containers:
      - name: nginx
        image: nginx:1.13
        ports:
          - containerPort: 80
  

• 创建

  kubectl create -f nginx_pod.ymal
  

如果出现错误

Error from server (ServerTimeout): error when creating "nginx_pod.ymal": No API token found for service account "default", retry after the token is automatically created and added to the service account

需要修改文件 vim /etc/kubernetes/apiserver 删除当中的 serviceAccount 插件

  > KUBE_ADMISSION_CONTROL="--admission-control=NamespaceLifecycle,NamespaceExists,LimitRanger,SecurityContextDeny,ResourceQuota"
  > ```
  >
  > 

* 查看状态

# 查看pod情况 kubectl get pod

# 查看分配节点 kubectl get pod -o wide # 查看指定pod详情 kubectl describe pod nginx

  > 如果出现错误:
  >
  >  Warning FailedSync Error syncing pod, skipping: failed to "StartContainer" for "POD" with ErrImagePull: "image pull failed for registry.access.redhat.com/rhel7/pod-infrastructure:latest, this may be because there are no credentials on this request.  details: (open /etc/docker/certs.d/registry.access.redhat.com/redhat-ca.crt: no such file or directory)"
  >
  > 则修改 `vim /etc/kubernetes/kubelet` ，可以通过 `docker search pod-infrastructure`  来查看最优的安装源
  >
  > ```
  > KUBELET_POD_INFRA_CONTAINER="--pod-infra-container-image=docker.io/tianyebj/pod-infrastructure:latest"
  > ```
  >

* 修改Pod资源

    ```
    kubectl edit pod nginx
    ```

    >修改后自动生效

    

* 删除Pod

kubectl delete pod nginx # 强制删除 kubectl delete pod nginx --force --grace-period=0 ```