控制器CronJob

start

root@ubuntu-200470-1:~/cronjob# cat  cronjob.yaml 
apiVersion: batch/v1
kind: CronJob
metadata:
  name: hello
spec:
  schedule: "*/1 * * * *"
  jobTemplate:
    spec:
      template:
        spec:
          containers:
          - name: hello
            image: busybox
            args:
            - /bin/sh
            - -c
            - date; echo Hello from the Kubernetes cluster
          restartPolicy: OnFailure


kubectl  create -f cronjob.yaml


00470-1:~/cronjob# kubectl get jobs --watch

NAME                  COMPLETIONS   DURATION   AGE
hello-28276275        1/1           21s        3m1s
hello-28276276        1/1           19s        2m1s
hello-28276277        1/1           22s        61s
hello-28276278        0/1           1s         1s
process-item-apple    1/1           65s        15m
process-item-banana   1/1           68s        15m
process-item-cherry   1/1           66s        15m
^Croot@ubuntu-200470-1:~/cronjob# pods=$(kubectl get pods --selector=job-name=hello-28276276 --output=jsonpath={.items[*].metadata.name})
root@ubuntu-200470-1:~/cronjob# 
root@ubuntu-200470-1:~/cronjob# echo $pods 
hello-28276276-fn86r
root@ubuntu-200470-1:~/cronjob# kubectl  logs $pods 
Fri Oct  6 07:16:07 UTC 2023
Hello from the Kubernetes cluster




root@ubuntu-200470-1:~/cronjob# kubectl  create -f  cronjob.yaml 
Warning: batch/v1beta1 CronJob is deprecated in v1.21+, unavailable in v1.25+; use batch/v1 CronJob
cronjob.batch/hello created