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  • 【k8s】deploy-progressDeadlineSeconds

    环境

    1. kubernetes 1.20.4
    2. Spring Boot 2.5.0-M3

    目标

    deploy 升级过程中的最大时间由 progressDeadlineSeconds 来定义。
    如果升级过程被暂停了,该时间也会同步暂停,时间不会一直增长。

    示例

    Deployment.yaml

    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: busybox
    spec:
      progressDeadlineSeconds: 3
      selector:
        matchLabels:
          app: busybox
      replicas: 18
      template:
        metadata:
          labels:
            app: busybox
        spec:
          terminationGracePeriodSeconds: 5
          containers:
            - name: busybox
              image: busybox:1.30.0
              command: ["/bin/sh", "-c", "sleep 3600"]
    

    查看

    [root@master ~]# kubectl get pod
    NAME                       READY   STATUS              RESTARTS   AGE
    busybox-6bd65c67cf-2lq2x   0/1     ContainerCreating   0          35s
    busybox-6bd65c67cf-44j46   1/1     Running             0          35s
    busybox-6bd65c67cf-4hchv   0/1     ContainerCreating   0          35s
    busybox-6bd65c67cf-bll7f   1/1     Running             0          35s
    busybox-6bd65c67cf-hm7n7   0/1     ContainerCreating   0          35s
    busybox-6bd65c67cf-jd7w9   0/1     ContainerCreating   0          35s
    busybox-6bd65c67cf-jf5s9   1/1     Running             0          35s
    busybox-6bd65c67cf-m47zs   1/1     Running             0          35s
    busybox-6bd65c67cf-m9cl4   1/1     Running             0          35s
    busybox-6bd65c67cf-nm8wt   1/1     Running             0          35s
    busybox-6bd65c67cf-qdsmq   1/1     Running             0          35s
    busybox-6bd65c67cf-rnpgl   0/1     ContainerCreating   0          35s
    busybox-6bd65c67cf-s4nnx   0/1     ContainerCreating   0          35s
    busybox-6bd65c67cf-sp87l   1/1     Running             0          35s
    busybox-6bd65c67cf-trbrv   0/1     ContainerCreating   0          35s
    busybox-6bd65c67cf-vjct8   0/1     ContainerCreating   0          35s
    busybox-6bd65c67cf-vspqb   0/1     ContainerCreating   0          35s
    busybox-6bd65c67cf-zljwk   0/1     ContainerCreating   0          35s
    

    查看状态

    [root@master ~]# kubectl rollout status deployment busybox
    Waiting for deployment "busybox" rollout to finish: 4 of 18 updated replicas are available...
    Waiting for deployment "busybox" rollout to finish: 5 of 18 updated replicas are available...
    Waiting for deployment "busybox" rollout to finish: 6 of 18 updated replicas are available...
    Waiting for deployment "busybox" rollout to finish: 7 of 18 updated replicas are available...
    Waiting for deployment "busybox" rollout to finish: 8 of 18 updated replicas are available...
    error: deployment "busybox" exceeded its progress deadline
    

    可以看到超过最大时间没有升级完成,就会变成超时状态。

    总结

    progressDeadlineSeconds 定义 deploy 升级的最大时间。

    附录

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  • 原文地址:https://www.cnblogs.com/jiangbo44/p/14608517.html
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