"ssh" into a Kubernetes node with a privileged pod and chroot

kssh.sh

kssh () {
        pod_name=nick-ssh
        kubectl delete pod $pod_name
        k8s_node=$1
        cat <<EOF | kubectl create -f -
apiVersion: v1
kind: Pod
metadata:
  name: "${pod_name}"
spec:
  restartPolicy: Never
  hostNetwork: true
  hostPID: true
  containers:
  - name: ubuntu
    image: ubuntu:22.04
    command: [sleep]
    args: [infinity]
    securityContext:
      privileged: true
    volumeMounts:
    - name: host
      mountPath: /host
  volumes:
  - name: host
    hostPath:
      path: /
      type: Directory
  nodeName: "${k8s_node}"
EOF
        kubectl wait --for=condition=Ready=true "pod/${pod_name}"
        kubectl exec -i --tty "${pod_name}" -- chroot /host /bin/bash
        kubectl delete pod --wait=false $pod_name
}