The Kubernetes Docs say the following:

In general, Pods do not disappear until someone destroys them. This might be a human or a controller. The only exception to this rule is that Pods with a phase of Succeeded or Failed for more than some duration (determined by the master) will expire and be automatically destroyed.

What is the default value for this duration and how do I set it? My pods also never enter the Succeeded or Failed phase, rather they enter Completed or Error phase respectively. Is this to be expected; are the docs out of date?

I check the pod phases using kubectl get pods --show-all, where information about them seems to persist. Is there any additional cleanup necessary? Running kubectl get pods without --show-all does not show any pods after they destroyed.

I am creating pods with kubectl apply -f k8/dummy-pod.yaml and the following yaml file:

apiVersion: v1
kind: Pod
metadata:
  name: dummy.3
  labels:
    vara: a
    role: idk
spec:
  hostNetwork: true
  restartPolicy: Never
  containers:
  - image: gcr.io/gv-test-196801/dummy:v2
    name: dummy-1