Terminate stuck namespaces

terminate-namespace.sh

#!/bin/bash

# Based off of https://www.ibm.com/support/knowledgecenter/en/SSBS6K_3.1.1/troubleshoot/ns_terminating.html

# Check for jq
command -v jq 2>&1 > /dev/null
if [ $? -ne 0 ]
then
  echo "Either jq is not installed or not in PATH. Exiting."
  exit 1
fi

# Check for namespace
if [ $# -ne 1 ]
then
  echo "Please specify the name of the namespace to be terminated"
  exit 1
fi

NAMESPACE="$1"
# Namespace manifest file
NAMESPACE_MANIFEST_FILE="/tmp/$NAMESPACE.json"
rm $NAMESPACE_MANIFEST_FILE 2>/dev/null

kubectl get namespace $NAMESPACE -o json | jq '.spec.finalizers = []' > $NAMESPACE_MANIFEST_FILE

# Check if kube-proxy is running
nc -w 2 -z localhost 8001
if [ $? -ne 0 ]
then
  kubectl proxy &
  sleep 3
fi

# Finalize the termination
curl -k -H "Content-Type: application/json" -X PUT --data-binary @$NAMESPACE_MANIFEST_FILE "http://127.0.0.1:8001/api/v1/namespaces/$NAMESPACE/finalize"

killall kubectl