Delete a Kubernetes namespace stuck in Terminating status

delete-stuck-namespace.sh

#!/bin/bash

NAMESSPACE=`kubectl get namespaces --field-selector status.phase=Terminating --output json | jq '.items[].metadata.labels."kubernetes.io/metadata.name"' | tr -d '"'`

if [ -z ${NAMESPACE} ]; then
  echo "ERROR: there is no stuck namespace in Terminating status"
  exit 1

else
  echo "INFO: found ${NAMESPACE} namespace stuck in Terminating status"
  echo "INFO: deleting the namespace"

  kubectl get namespace "${NAMESPACE}" -o json \
    | tr -d "\n" | sed "s/\"finalizers\": \[[^]]\+\]/\"finalizers\": []/" \
    | kubectl replace --raw /api/v1/namespaces/${NAMESPACE}/finalize -f -

  if [ "$?" -eq "0" ]; then
    echo "INFO: deleted ${NAMESPACE} stuck namespace"

  else
    echo "ERROR: something went wrong while deleting ${NAMESPACE} namespace"
    exit 1

  fi
fi