apiVersion: v1
data:
  healthcheck.sh: |
    #!/usr/bin/env bash
    # Copyright 2017 The Kubernetes Authors.
    #
    # Licensed under the Apache License, Version 2.0 (the "License");
    # you may not use this file except in compliance with the License.
    # You may obtain a copy of the License at
    #
    #     http://www.apache.org/licenses/LICENSE-2.0
    #
    # Unless required by applicable law or agreed to in writing, software
    # distributed under the License is distributed on an "AS IS" BASIS,
    # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    # See the License for the specific language governing permissions and
    # limitations under the License.

    # zkOk.sh uses the ruok ZooKeeper four letter work to determine if the instance
    # is health. The $? variable will be set to 0 if server responds that it is
    # healthy, or 1 if the server fails to respond.

    OK=$(echo ruok | nc 127.0.0.1 $1)
    if [ "$OK" == "imok" ]; then
    	exit 0
    else
    	exit 1
    fi

kind: ConfigMap
metadata:
  name: healthcheck