Shell function that delete a namespace stuck in terminating state.

k8s_force_delete_ns.sh

k8s_force_delete_ns() {
  local ns="$1"

  # If no namespace provided, use fzf to pick from terminating namespaces
  if [[ -z "$ns" ]]; then
    ns="$(
      kubectl get ns \
        --field-selector=status.phase=Terminating \
        -o jsonpath='{range .items[*]}{.metadata.name}{"\n"}{end}' \
      | fzf --prompt='Terminating namespaces > ' --height=10 --reverse
    )"

    if [[ -z "$ns" ]]; then
      echo "No namespace selected, aborting." >&2
      return 1
    fi
  fi

  echo "Force deleting namespace: $ns" >&2

  kubectl get namespace "$ns" -o json \
    | jq '.spec.finalizers = []' \
    | kubectl replace --raw "/api/v1/namespaces/${ns}/finalize" -f -
}