docker zookeeper 集群搭建

#创建集群目录
mkdir /opt/cluster/zk
cd /opt/cluster/zk

#清理脏数据【可跳过】
docker stop zk-2181
docker stop zk-2182
docker stop zk-2183
docker rm zk-2181
docker rm zk-2182
docker rm zk-2183

docker ps -a

#创建配置文件模板【vim zoo-cluster.tmpl】
cat >zoo-cluster.tmpl <<HERE
clientPort=\${PORT}
dataDir=/data
dataLogDir=/datalog
tickTime=2000
initLimit=5
syncLimit=2
maxClientCnxns=60
server.1=localhost:2881:3881
server.2=localhost:2882:3882
server.3=localhost:2883:3883
HERE

#生成conf和data目标，并生成配置信息
for port in `seq 2181 2183`; do \
  mkdir -p ./${port}/conf \
  && PORT=${port} envsubst < ./zoo-cluster.tmpl > ./${port}/conf/zoo.cfg \
  && mkdir -p ./${port}/data \
  && echo $[$port-2180] >./${port}/data/myid \
  && mkdir -p ./${port}/datalog; \
done

#创建3个zookeeper容器
for port in `seq 2181 2183`; do \
  docker run -d --restart always -h zk${port} --name zk-${port} --net host  \
  -v /opt/cluster/zk/${port}/conf:/conf \
  -v /opt/cluster/zk/${port}/data:/data \
  -v /opt/cluster/zk/${port}/datalog:/datalog \
  -p ${port}:${port} -p $[$port+700]:$[$port+700] -p $[$port+1700]:$[$port+1700] \
  zookeeper ; \
done

# 创建并运行临时zookeeper容器，zkCli客户端连接集群
docker run -it --rm  zookeeper zkCli.sh -server 123.*.*.34:2181,123.*.*.34:2182,123.*.*.34:2183