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使用kubernetes的cronjob给你定时执行任务

 3 years ago
source link: https://www.bboy.app/2021/06/15/%E4%BD%BF%E7%94%A8kubernetes%E7%9A%84cronjob%E7%BB%99%E4%BD%A0%E5%AE%9A%E6%97%B6%E6%89%A7%E8%A1%8C%E4%BB%BB%E5%8A%A1/
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使用kubernetes的cronjob给你定时执行任务

发表于

2021-06-15 分类于 kubernetes

20210615084323.png

我有很多需要定时执行的任务，大部分是定时去请求一个接口来更新或者获取数据，之前一直使用的是xxl-job，但是这个跑在家里的树莓派中占用的资源很多，而且有时候会调度失败，所以就想着使用k8s的cronjob去给我调度任务

下面是示例yaml文件

apiVersion: batch/v1
kind: CronJob
metadata:
  name: baidu-sign
  namespace: cronjob
spec:
  schedule: "33 8 * * *"
  successfulJobsHistoryLimit: 5
  failedJobsHistoryLimit: 5
  jobTemplate:
    spec:
      template:
        spec:
          containers:
          - name: baidu-sign
            image: registry.bboysoul.cn/curlimages/curl:7.77.0
            imagePullPolicy: IfNotPresent
            command:
            - 'curl'
            - 'http://www.baidu.com'
          restartPolicy: OnFailure

默认调用的时间都是使用UTC所以你会返现调用的时间会相差8小时，为了解决这个问题就需要给kube-controller-manager挂载/etc/localtime

vim /etc/kubernetes/manifests/kube-controller-manager.yaml

- hostPath:
    path: /etc/localtime
    type: FileOrCreate
  name: localtime
- mountPath: /etc/localtime
  name: localtime
  readOnly: true

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