部署 zookeeper 集群
这里用了三台主机，系统为CentOS7
节点列表
172.50.0.31
172.50.0.34
172.50.0.37
1、安装JDK
yum install -y java-1.8.0-openjdk java-1.8.0-openjdk-devel
2、下载程序包
wget https://mirrors.tuna.tsinghua.edu.cn/apache/zookeeper/stable/zookeeper-3.4.9.tar.gz
3、解压到指定目录
tar xvf zookeeper-3.4.9.tar.gz -C /usr/local/
cd /usr/local
mv zookeeper-3.4.9 zookeeper
cd zookeeper
cd conf
cp zoo_sample.cfg zoo.cfg
4、修改各节点配置文件
vim zoo.cfg
dataDir=/usr/local/zookeeper/data
dataLogDir=/usr/local/zookeeper/datalog
server.1=172.50.0.31:2888:3888
server.2=172.50.0.34:2888:3888
server.3=172.50.0.37:2888:3888
scp zoo.cfg 172.50.0.34:/usr/local/zookeeper/conf
scp zoo.cfg 172.50.0.37:/usr/local/zookeeper/conf
5、在各节点创建数据目录和日志目录
mkdir /usr/local/zookeeper/{data,datalog}
6、在各节点创建myid文件，并指定配置文件中对应的id编号
echo 1 > /usr/local/zookeeper/data/myid
echo 2 > /usr/local/zookeeper/data/myid
echo 3 > /usr/local/zookeeper/data/myid
7、分别启动各节点服务
./zkServer.sh start
netstat -tnlp | grep 2181
8、查看节点状态
$ ./zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg
Mode: leader
参考：
