Question

当我使用AWS EC2部署k8s群集时，在其上部署一个测试容器：

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: app-deployment-test
spec:
  replicas: 2
  template:
    metadata:
      labels:
        app: app-test
        tier: frontend
    spec:
      containers:
        - name: app
          image: ubuntu
          ports:
            - containerPort: 80
          imagePullPolicy: Always

得到了

Back-off restarting failed container
Error syncing pod

pod上的

错误。描述特殊pod：kubectl describe pod app-deployment-test-ccddf7bcc-dqltq时，在输出尾部获取这些消息：

Events:
  Type     Reason                 Age                From                   Message
  ----     ------                 ----               ----                   -------
  Normal   Scheduled              41s                default-scheduler      Successfully assigned app-deployment-test-ccddf7bcc-dqltq to app-instance
  Normal   SuccessfulMountVolume  41s                kubelet, app-instance  MountVolume.SetUp succeeded for volume "default-token-zrf98"
  Normal   Pulling                14s (x3 over 40s)  kubelet, app-instance  pulling image "ubuntu"
  Normal   Pulled                 12s (x3 over 32s)  kubelet, app-instance  Successfully pulled image "ubuntu"
  Normal   Created                12s (x3 over 31s)  kubelet, app-instance  Created container
  Normal   Started                11s (x3 over 31s)  kubelet, app-instance  Started container
  Warning  BackOff                11s (x3 over 27s)  kubelet, app-instance  Back-off restarting failed container
  Warning  FailedSync             11s (x3 over 27s)  kubelet, app-instance  Error syncing pod

失败的原因是什么？

Answer 1

default command到ubuntu容器是bash。此bash命令将运行一次并将停止容器，这是预期的行为。

如果要保持容器运行，请在下面添加命令和参数。

command: ["/bin/sh"] args: ["-c", "while true; do echo hello; sleep 10;done"]

我建议你运行nginx容器，它会一直运行，直到你杀死容器。

为什么不能正确地在AWS EC2上的k8s集群上部署容器？

1 个答案: