kubernetes - 无法访问docker时如何限制ImagePullBackOff的重试次数？

Question

在我的 kubernetes 作业中，我写错了 docker name，我发现我的作业一直处于 ImagePullBackOff 状态。我要的是job release 资源，docker image 名字错了就停止拉取。我注意到有一个 imagePullPolicy 配置，但似乎不符合我的要求。我希望该作业始终拉取 docker 图像，但对拉取有重试次数限制。 kubernetes 支持这个 Action 吗？

Answer 1

您应该使用 backoffLimit 和 activeDeadlineSeconds 作为通用 Controller ，在指定次数的失败后退出作业。

例子

 apiVersion: batch/v1
 kind: Job
 metadata:
   name: myjob
   namespace: default
 spec:
   backoffLimit: 5
   activeDeadlineSeconds: 100
   template:
     metadata:
       name: myjob
     spec:
       containers:
       - name: nginx
         image: wrong_image_name
       restartPolicy: OnFailure

By setting the activeDeadlineSeconds field of the Job to a number of seconds. The activeDeadlineSeconds applies to the duration of the job, no matter how many Pods are created.

Once a Job reaches activeDeadlineSeconds, all of its running Pods are terminated and the Job status will become type: Failed with reason: DeadlineExceeded