Remove finalizers from kubernetes resources based on grep patterns or name of the resource

kube_remove_finalizers

#!/bin/bash

print_usage() {
    echo "

//////////////////////////////////////////////////////////////////////////////////////////////
* Remove finalizer from kubernetes resources based on grep patterns or name of the resource *
//////////////////////////////////////////////////////////////////////////////////////////////

Usage:
    kube_remove_finalizers --type=RESOURCE_TYPE [--pattern=PATTERN | --name=RESOURCE_NAME]

Example
    kube_remove_finalizer --type=pod --pattern=nginx

Required Parameters:

    --type:           Type of resource. Example: pod, deployment etc.

Optional Parameters:
    --pattern:            A pattern suitable for grep command.

    --name:               Name of the resource. This flag will override --pattern when both are provided.


Note: You need to provide atleast one of --pattern or --name flag.
"
}

while [ $# -gt 0 ]; do
  case "$1" in
    -h|--help*)
      print_usage
      exit 0
      ;;
    --type=*)
      type="${1#*=}"
      ;;
    --name=*)
      name="${1#*=}"
      ;;
    --pattern=*)
      pattern="${1#*=}"
      ;;
    *)
      printf "\nError: Invalid argument: $1\n"
      print_usage
      exit 1
  esac
  shift
done

if [[ -z $type ]]; then
  echo "--type flag is required"
  exit 1
fi


if [[ -z $name ]]; then
  for resource in $(kubectl get $type --no-headers | grep "$pattern" | awk '{print$1}'); do
      kubectl get $type "$resource" -o name | \
      xargs -I {} kubectl patch {} --type merge -p '{"metadata":{"finalizers": [null]}}'
  done
else
  kubectl get $type $name -o name | \
  xargs -I {} kubectl patch {} --type merge -p '{"metadata":{"finalizers": [null]}}'
fi