解决k8s CronJob调度时差问题

问题

设置了如下job，在10:11没有执行

apiVersion: batch/v1
kind: CronJob
metadata:
  name: hello
spec:
  schedule: "11 10 * * *"
  jobTemplate:
    spec:
      template:
        spec:
          containers:
          - name: hello
            image: busybox:1.28
            imagePullPolicy: IfNotPresent
            command:
            - /bin/sh
            - -c
            - date; echo Hello
          restartPolicy: OnFailure

解决办法

1. 在所有k8s节点的配置文件/etc/kubernetes/manifests/kube-controller-manager.yaml 添加以下项
   
2. 重启k8s

systemctl restart kubelet

3. 执行kubectl get pod | grep hello ，查看AGE可发现pod在规定的调度时间被调度了

参考博客

https://kubernetes.io/zh-cn/docs/concepts/workloads/controllers/cron-jobs/
https://juejin.cn/post/6942325548199149581
https://cloud.tencent.com/developer/article/1469891