在 cronjob k8s 中运行容器

Question

I have a dockerfile finishing with an entrypoint:

ENTRYPOINT ["/bin/bash" , "-c", "source /app/env.sh && printenv && python3 /app/script.py"]

And a yaml k8s CronJob:

apiVersion: batch/v1beta1
kind: CronJob
metadata:
  name: my_healthcheck
  namespace: default
  labels:
    app: my_healthcheck
spec:
  schedule: "30 8 * * 1-5"
  jobTemplate:
    spec:
      backoffLimit: 5
      template:
        spec:
          containers:
            - name: pythonscript
              image: xxx/pythonscript:latest
          imagePullPolicy: IfNotPresent
          command: [ <what do i put here> ]
          restartPolicy: OnFailure

Inside "command", what command i need to put, to run the container ? thanks

Answer 1

The image ENTRYPOINT handles everything, so the command doesn't need to supplied.

If you do provide a command , it will override the ENTRYPOINT .

    command: [ '/bin/bash', '-c', 'echo "not running python"' ]

You can supply args if you want to append arguments to the command / ENTRYPOINT .

See the difference between the Kubernetes/Docker terms .