Zookeeper

ref: https://blog.csdn.net/mm_bit/article/details/51305895

Setup

1. download https://zookeeper.apache.org/releases.html#download

2. install tar -zxvf zk-{version}.tar.gz

Run Standalone

1. configration

   cp conf/zoo_sample.cfg zoo.cfg
   

   key:

   tickTime=2000
   dataDir=/var/zookeeper/data
   #dataLogDir=/var/zookeeper/data
   clientPort=2181
   

2. run

   bin/zkServer.sh start
   

Run Local Cluster

1. configration

   1.1. zoo one

   cp conf/zoo_sample.cfg zoo_0001.cfg
   

   clientPort=2181
   dataDir=/var/zookeeper/data/0001
   dataLogDir=/var/zookeeper/dataLog/0001
   
   server.1=127.0.0.1:2881:3881
   server.2=127.0.0.1:2882:3882
   server.3=127.0.0.1:2883:3883
   

   1.2. zoo two

   cp zoo_0001.cfg zoo_0002.cfg
   

   clientPort=2182
   dataDir=/var/zookeeper/data/0002
   dataLogDir=/var/zookeeper/dataLog/0002
   
   server.1=127.0.0.1:2881:3881
   server.2=127.0.0.1:2882:3882
   server.3=127.0.0.1:2883:3883
   

   1.3. zoo three

   cp zoo_0001.cfg zoo_0003.cfg
   

   clientPort=2183
   dataDir=/var/zookeeper/data/0003
   dataLogDir=/var/zookeeper/dataLog/0003
   
   server.1=127.0.0.1:2881:3881
   server.2=127.0.0.1:2882:3882
   server.3=127.0.0.1:2883:3883
   

2. change myid

   echo "1" > dataDir=/var/zookeeper/data/0001/myid
   echo "2" > dataDir=/var/zookeeper/data/0002/myid
   echo "3" > dataDir=/var/zookeeper/data/0003/myid
   

3. run

   ./bin/zhServer.sh start zoo_0001.cfg
   ./bin/zhServer.sh start zoo_0002.cfg
   ./bin/zhServer.sh start zoo_0003.cfg
   

4. check leader/follower

   ./bin/zhServer.sh status zoo_0001.cfg
   ./bin/zhServer.sh status zoo_0002.cfg
   ./bin/zhServer.sh status zoo_0003.cfg