Kubernetes - killing pod

killing pod who do not want to die

            Actual situation:

            $ kubectl -n kube-system get pod  | grep Termi
            kube-dns-74849985d5-tmvf8                                      2/3       Terminating   3          40d
            kube-dns-74849985d5-wkrvb                                      1/3       Terminating   0          41d
            kubernetes-dashboard-b6db5b8d9-rlj72                           1/1       Terminating   2          40d
            Killing...
            - First kill with force
            $ kubectl -n kube-system delete pod kube-dns-74849985d5-tmvf8 --grace-period=0 --force --wait=false
            warning: Immediate deletion does not wait for confirmation that the running resource has been terminated. \
            The resource may continue to run on the cluster indefinitely.
            pod "kube-dns-74849985d5-tmvf8" force deleted

            $ kubectl -n kube-system delete pod kube-dns-74849985d5-wkrvb --grace-period=0 --force --wait=false
            warning: Immediate deletion does not wait for confirmation that the running resource has been terminated. \
            The resource may continue to run on the cluster indefinitely.
            pod "kube-dns-74849985d5-wkrvb" force deleted

            $ kubectl -n kube-system delete pod kubernetes-dashboard-b6db5b8d9-rlj72 --grace-period=0 --force --wait=false
            warning: Immediate deletion does not wait for confirmation that the running resource has been terminated. \
            The resource may continue to run on the cluster indefinitely.
            pod "kubernetes-dashboard-b6db5b8d9-rlj72" force deleted
            - Then, the ninja command:
            $ kubectl -n kube-system patch pod kube-dns-74849985d5-wkrvb -p '{"metadata":{"finalizers":null}}'
            pod/kube-dns-74849985d5-wkrvb patched
            $ kubectl -n kube-system patch pod kube-dns-74849985d5-wkrvb -p '{"metadata":{"finalizers":null}}'
            pod/kube-dns-74849985d5-wkrvb patched
            $ kubectl -n kube-system patch pod kube-dns-74849985d5-wkrvb -p '{"metadata":{"finalizers":null}}'
            pod/kube-dns-74849985d5-wkrvb patched

            Checking:

            $ kubectl -n kube-system get pod  | grep Termi 
            $