docker - 设置Pod重新启动限制

Question

我们可以像kubernetes中的Docker swarm一样设置Pod Restart Limit 吗？

Docker swarm restart_policy:

    condition: any
    delay: 60s
    max_attempts: 2
    window: 60s         

或其他任何方式，因为k8s种部署不支持重启策略 never或 onfailure
我的Deployment.yaml:-

apiVersion: apps/v1
kind: Deployment
metadata:
  name: xyz
  labels:
    app: xyz
spec:
  replicas: 1
  selector:
    matchLabels:
      app: xyz
  template:
    metadata:
      labels:
        app: xyz
    spec:
      containers:
      - name: xyz
        image: x.y.z
        imagePullPolicy: IfNotPresent
      imagePullSecrets:
      - name: x
      restartPolicy: Never

错误 is invalid: spec.template.spec.restartPolicy: Unsupported value: "Never": supported values: "Always"

Answer 1

运行kubectl run --help | grep restart
您将看到有一个重新启动策略设置，如下所示

 --restart='Always': The restart policy for this Pod.  
Legal values [Always, OnFailure, Never].  
If set to 'Always' a deployment is created, if set to 'OnFailure' a job is created, 
if set to 'Never', a regular pod is created. 
For the latter two --replicas must be 1.  Default 'Always', for CronJobs `Never`.

maxRetries还有一个新选项

$ cat pod_retry.yaml
apiVersion: v1
kind: Pod
metadata:
  name: test-pod
spec:
  restartPolicy: "OnFailure"
  maxRetries: "3"                // Max retries is 3
  containers:
  - image: nginx:1.7.9
    name: test-pod
    command:
    - /bin/ls
    - hello