从零搭建Hadoop+zookeeper+hbase+hive完全分布式环境（02）——Zookeeper

在上一篇Hadoop集群搭建的基础上搭建zookeeper集群
Hadoop集群](https://editor.csdn.net/md/?articleId=106998862)

配置zoo.cfg

切换到/opt/zookeeper/conf目录下
vi zoo.cfg（若文件名不对应，则修改文件名）

# The number of milliseconds of each tick
tickTime=2000
maxClientCnxns=0    //添加
# The number of ticks that the initial
# synchronization phase can take
initLimit=50    //修改
# The number of ticks that can pass between
# sending a request and getting an acknowledgement
syncLimit=5
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just
# example sakes.
dataDir=/opt/hadoop/zookeeper    //修改存储目录
# the port at which the clients will connect
clientPort=2181
# the maximum number of client connections.
# increase this if you need to handle more clients
#maxClientCnxns=60
#
# Be sure to read the maintenance section of the
# administrator guide before turning on autopurge.
#
# http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
#
# The number of snapshots to retain in dataDir
#autopurge.snapRetainCount=3
# Purge task interval in hours
# Set to "0" to disable auto purge feature
#autopurge.purgeInterval=1
server.1=hadoop01:2888:3888
server.2=hadoop02:2888:3888
server.3=hadoop03:2888:3888    //添加信息，集群内有多少虚拟机就添加多少条，并修改对应的主机名

配置完成后将配置文件传输到集群内其他的虚拟机对应目录下，覆盖其原有zoo.cfg文件

scp zoo.cfg root@192.168.109.111 /opt/zookeeper/conf

在集群内各虚拟机上/opt/hadoop目录下新建zookeeper文件夹

 mkdir /opt/hadoop/zookeeper

在创建的zookeeper文件夹下添加myid文件，文件内容为zoo.cfg文件下，主机名对应的server.num的num：vi myid

在集群内各个节点上启动zookeeper

切换到/opt/zookeeper/bin/目录下
./zkServer.sh start：启动zookeeper

jps检查zookeeper是否启动成功

每个节点上都有QuorumPeerMain进程