How to force the removal of residual namespace k8s?

Script is as follows:

#!/bin/bash
set -e

useage(){
    echo "useage:"
    echo "  delns.sh NAMESPACE"
}

if [ $# -lt 1 ];then
    useage
    exit
fi

NAMESPACE=$1
JSONFILE=${NAMESPACE}.json
kubectl get ns "${NAMESPACE}" -o json > "${JSONFILE}"
vi "${JSONFILE}"
curl -k -H "Content-Type: application/json" -X PUT --data-binary @"${JSONFLE}" \
    http://127.0.0.1:8001/api/v1/namespaces/"${NAMESPACE}"/finalize

Use the premise

The api-server proxy to the local port 8801

kubectl proxy

Instructions

Suppose you want to delete the namespace is a test

delns.sh test

The script opens vi editor namespace information manually

"spec": {
        "finalizers": [
            "kubernetes"
        ]
    },

The "kubernetes" delete, and then: wq to save and exit the editor