#!/usr/bin/env bash # Copyright 2016 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 $? variable will be set to 0 if server responds that it is # healthy, or 1 if the server fails to respond. ZK_CLIENT_PORT=${ZK_CLIENT_PORT:-2181} OK=$(echo ruok | nc 127.0.0.1 $ZK_CLIENT_PORT) if [ "$OK" == "imok" ]; then exit 0 else exit 1 fi