如果已有作业正在运行，如何防止在Kubernetes中执行Cronjob [英] How to prevent a Cronjob execution in Kubernetes if there is already a job running

问题描述

我必须在Kubernetes中部署 Cronjob ，这将每15分钟创建一个Job Pod.作业将检查服务是否准备好提供新数据.准备好此服务后，该作业将需要1个多小时才能完成其执行.问题围绕这样一个事实，即将在此期间执行其他作业.

I have to deploy a Cronjob in Kubernetes that will create a Job pod every 15 minutes. The job will check if a service is ready to provide new data. Once this service is ready, the job will take more than 1 hour to complete its execution. The problem revolves around the fact that other jobs are going to be executed during this time.

简而言之，当已有作业正在运行时，如何防止在 Kubernetes Cronjobs 中执行作业?

In short, how can I prevent a job to be executed in Kubernetes Cronjobs when there's already a Job running?

推荐答案

CronJob资源具有一个名为concurrencyPolicy的属性，此处为示例:

CronJob resource has a property called concurrencyPolicy, here an example:

apiVersion: batch/v1beta1
kind: CronJob
metadata:
  name: your-cron
spec:
  schedule: "*/40 8-18 * * 1-6"
  concurrencyPolicy: Forbid
  jobTemplate:
    spec:
      template:
        metadata:
          labels:
            app: your-periodic-job
        spec:
          containers:
          - name: your_container
            image: your_image
            imagePullPolicy: IfNotPresent
          restartPolicy: OnFailure

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