kubernetes - Kubernets CronJob Containers

Question

I'm trying to run a cronjob inside k8 container. Below is my code for CronJob resource:

apiVersion: batch/v1beta1
kind: CronJob
metadata:
name: deployment-restart
namespace: <YOUR NAMESPACE>
spec:
 concurrencyPolicy: Forbid
 schedule: '0 8 * * *' # cron spec of time, here, 8 o'clock
  jobTemplate:
   spec:
     backoffLimit: 2 # this has very low chance of failing, as all this does
                  # is prompt kubernetes to schedule new replica set for
                  # the deployment
  activeDeadlineSeconds: 600 # timeout, makes most sense with 
                             # "waiting for rollout" variant specified below
  template:
    spec:
      serviceAccountName: deployment-restart # name of the service
                                             # account configured above
      restartPolicy: Never
      containers:
        - name: kubectl
          image: bitnami/kubectl # probably any kubectl image will do,
                                 # optionaly specify version, but this
                                 # should not be necessary, as long the
                                 # version of kubectl is new enough to
                                 # have `rollout restart`
          command:
            - 'kubectl'
            - 'rollout'
            - 'restart'
            - 'deployment/<YOUR DEPLOYMENT NAME>

The above template was copied from How to schedule pods restart. My deployment doesn't have kubectl installed so I'm specifying different image with kubectl under containers (bitnami/kubectl). However, when my deployment restarts, it restarts with kubectl image containers which results in error. I don't know what's happening out here. When I'm restarting my own deployment shouldn't it fetch the image the deployment refers to?

question from:https://stackoverflow.com/questions/65839768/kubernets-cronjob-containers

Answer 1

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