| #!/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 |