搭建Zookeeper
一 准备三台服务器（本人Centos7虚拟机）
AMouse: 192.168.3.201 BCattle: 192.168.3.202 Ctiger: 192.168.3.203
二 下载Zookeeper
版本： zookeeper-3.4.6 地址： http://mirror.bit.edu.cn/apache/zookeeper/ 地址： https://mirrors.tuna.tsinghua.edu.cn/apache/zookeeper/
三 上传文件到/usr/local/ 目录下，解压至当前目录，并将zookeeper-3.4.6修改为为 zookeeper
tar -zxvf zookeeper-3.4.6.tar.gz -C /usr/local/
mv zookeeper-3.4.6 zookeeper
四 在zookeeper目录下建立data和 logs目录
mkdir /usr/local/zookeeper/data
mkdir /usr/local/zookeeper/logs
五 将zookeeper目录下/usr/local/zookeeper/conf/zoo_simple.cfg文件修改为 zoo.cfg
cd /usr/local/zookeeper/conf mv zoo_sample.cfg zoo.cfg
六 修改zoo.cfg 文件
vi zoo.cfg
红色标记位置是需要修改的配置
# The number of milliseconds of each tick
tickTime=2000
# The number of ticks that the initial
# synchronization phase can take
initLimit=10
# 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=/usr/local/zookeeper/data
# 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 dataLogDir=/usr/local/zookeeper/logs server.1=192.168.3.201:2888:3888 server.2=192.168.3.202:2888:3888 server.3=192.168.3.203:2888:3888
七 拷贝zookeeper目录到另外两台服务器
scp -r /usr/local/zookeeper root@192.168.3.202:/usr/local/ scp -r /usr/local/zookeeper root@192.168.3.203:/usr/local/
八 在三台服务器上分别创建myid文件
server.1 的myid内容为1
192.168.3.201
echo "1">> /usr/local/zookeeper/data/myid
server.2的myid内容为2
192.168.3.202
echo "2">> /usr/local/zookeeper/data/myid
server.3的myid为 3
192.168.3.203
echo "3">> /usr/local/zookeeper/data/myid
九 在三台服务器上分别启动ZooKeeper服务
cd /usr/local/zookeeper/ bin/zkServer.sh start
十 ZooKeeper集群的状态
bin/zkServer.sh status
