Commands and Arguments - Sandeep-K-Khandelwal/CKAD GitHub Wiki

• If you do not supply command or args for a Container, the defaults defined in the Docker image are used.

• If you supply a command but no args for a Container, only the supplied command is used. The default EntryPoint and the default Cmd defined in the Docker image are ignored.

• If you supply only args for a Container, the default Entrypoint defined in the Docker image is run with the args that you supplied.

• If you supply a command and args, the default Entrypoint and the default Cmd defined in the Docker image are ignored. Your command is run with your args.

apiVersion: v1
kind: Pod
metadata:
  name: command-demo
spec:
  containers:
  - name: command-demo-container
    image: debian
    command: ["printenv"]
    args: ["HOSTNAME", "KUBERNETES_PORT"]