###Zookeeper集群安装

安装集群环境```# /etc/hosts192.168.9.27   slave1192.168.9.28   slave2192.168.9.26   master

# jdk环境(1.7)[root@master bin]# java -versionjava version "1.7.0_67"Java(TM) SE Runtime Environment (build 1.7.0_67-b01)Java HotSpot(TM) 64-Bit Server VM (build 24.65-b04, mixed mode)

# master(安装及配置)cd /usr/local/src/wget http://mirror.bit.edu.cn/apache/zookeeper/zookeeper-3.4.10/zookeeper-3.4.10.tar.gztar zxvf zookeeper-3.4.10.tar.gzcd zookeeper-3.4.10mkdir data logmv conf/zoo_sample.cfg conf/zoo.cfgsed -i '/^dataDir/d' conf/zoo.cfgecho 'dataDir=/usr/local/src/zookeeper-3.4.10/data' >> conf/zoo.cfgecho 'dataLogDir=/usr/local/src/zookeeper-3.4.10/log' >> conf/zoo.cfgecho 'server.0=master:2888:3888' >> conf/zoo.cfgecho 'server.1=slave1:2888:3888' >> conf/zoo.cfgecho 'server.2=slave2:2888:3888' >> conf/zoo.cfg

# 从master机器推目录到slave1,slave2scp -r /usr/local/src/zookeeper-3.4.10 slave1:/usr/local/src/scp -r /usr/local/src/zookeeper-3.4.10 slave2:/usr/local/src/

# 创建myid文件echo '0' > /usr/local/src/zookeeper-3.4.10/data/myid    #masterecho '1' > /usr/local/src/zookeeper-3.4.10/data/myid    #slave1echo '2' > /usr/local/src/zookeeper-3.4.10/data/myid    #slave2

# 启动各节点(master,slave1,slave2)/usr/local/src/zookeeper-3.4.10/bin/zkServer.sh start 

# 查看各节点状态[root@master ~]# /usr/local/src/zookeeper-3.4.10/bin/zkServer.sh statusZooKeeper JMX enabled by defaultUsing config: /usr/local/src/zookeeper-3.4.10/bin/../conf/zoo.cfgMode: follower  # follower为从节点  leader为主节点```