[Bug]Error from server (BadRequest): container “xx“ in pod “xx“ is waiting to start:trying and faili

Kubernetes Pod创建问题与解决方案：本地镜像使用与配置

原创已于 2022-03-31 20:23:48 修改 · 1.6w 阅读

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#kubernetes #k8s #docker #linux #images

于 2022-03-31 20:13:45 首次发布

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在尝试通过yaml文件创建Kubernetes Pod时遇到错误，报错提示为尝试并失败拉取最新镜像。实际上，本地已经存在所需镜像。为避免这种情况，需要在yaml文件中为每个容器设置`imagePullPolicy`为`IfNotPresent`，确保使用已存在的本地镜像。更新yaml文件后，Pod状态恢复正常。

0 背景

执行如下yaml文件创建Pod时发生报错

---
apiVersion: v1
kind: Pod
metadata:
  name: volume-pod
spec:
  containers:
    - name: tomcat
      image: tomcat:latest
      ports:
        - containerPort: 8080
      volumeMounts:
        - name: app-logs
          mountPath: /usr/local/tomcat/logs
    - name: busybox
      image: busybox:latest
      command: ["sh","-c","tail -f /logs/catalina*.log"]
      volumeMounts:
      - name: app-logs
        mountPath: /logs
  volumes:
    - name: app-logs
      emptyDir: {}

1 报错

Error from server (BadRequest): container “tomcat” in pod “volume-pod” is waiting to start: trying and failing to pull image
在这里插入图片描述
Error from server (BadRequest): container “tomcat” in pod “volume-pod” is waiting to start: trying and failing to pull image

但是在本地存在镜像

需要在Pod的yaml文件中设置参数( imagePullPolicy: IfNotPresent)，避免k8s去拉取最新的镜像

---
apiVersion: v1
kind: Pod
metadata:
  name: volume-pod
spec:
  containers:
    - name: tomcat
      image: tomcat:latest
      imagePullPolicy: IfNotPresent
      ports:
        - containerPort: 8080
      volumeMounts:
        - name: app-logs
          mountPath: /usr/local/tomcat/logs
    - name: busybox
      image: busybox:latest
      imagePullPolicy: IfNotPresent
      command: ["sh","-c","tail -f /logs/catalina*.log"]
      volumeMounts:
      - name: app-logs
        mountPath: /logs
  volumes:
    - name: app-logs
      emptyDir: {}