Create an administrative session on a kubernetes node:

apiVersion: v1
kind: Pod
metadata:
  name: node-shell
  namespace: kube-system
spec:
  containers:
    - name: shell
      image: docker.io/alpine:3.13
      command:
        - nsenter
      args:
        - '-t'
        - '1'
        - '-m'
        - '-u'
        - '-i'
        - '-n'
        - sleep
        - '14000'
      securityContext:
        privileged: true
  restartPolicy: Never
  nodeName: {{node_to_run_on}}
  hostNetwork: true
  hostPID: true
  hostIPC: true
  securityContext: {}