安装zookeeper的前提：关闭防火墙
查看防火墙状态：
systemctl statues firewalld
启动防火墙：
systemctl start firewalld
关闭火墙：
systemctl stop firewalld
设置防火墙不启动：
systemctl disable firewalld
1、将apache-zookeeper-3.5.7-bin.tar.gz安装包拖入 /opt/software/ 中
cd /opt/software/ tar -zxvf apache-zookeeper-3.5.7-bin.tar.gz -C /opt/module
2、创建数据文件和目录文件
在zookeeper的跟目录下创建两个文件夹data和log
cd /opt/module/apache-zookeeper-3.5.7-bin/ mkdir data mkdir log
3、拷贝配置文件
cd /opt/module/apache-zookeeper-3.5.7-bin/conf/ cp zoo_sample.cfg zoo.cfg
在此路径下，将zoo.sample.cfg文件拷贝一份并重命名为zoo.cfg
4、配置文件更改：
vi zoo.cfg
添加下面内容
# 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=/opt/module/apache-zookeeper-3.5.7-bin/data dataLogDir=/opt/module/apache-zookeeper-3.5.7-bin/log # 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.0=192.168.1.100:2888:3888 server.1=192.168.1.101:2888:3888 server.2=192.168.1.102:2888:3888
5、创建服务器myid
在data目录下创建一个myid的文件，里面的值可以给个任意的值，但要和上述服务起server.x对应
cd /opt/module/apache-zookeeper-3.5.7-bin/data/ vi myid
6、集群拷贝
拷贝到101和102
scp -r /opt/module/apache-zookeeper-3.5.7-bin root@hadoop101:/opt/module scp -r /opt/module/apache-zookeeper-3.5.7-bin root@hadoop102:/opt/module
7、集群myid更改
进入到每个节点，修改myid值
vi myid
hadoop101的myid 改为1
hadoop102的myid 改为2
8、集群系统环境变量添加：
vi /etc/profile
添加内容
export ZOOKEEPER_HOME=/opt/module/apache-zookeeper-3.5.7-bin export PATH=$PATH:$ZOOKEEPER_HOME/bin
保存系统环境变量：
source /etc/profile
9、集群启动，每个节点都要启动
cd /opt/module/apache-zookeeper-3.5.7-bin zkServer.sh start zkServer.sh status
启动的时候要先启动hadoop101，否则会报错
10、zkCli连接验证
zkCli.sh -server hadoop100:2181
ctrl + z 停止运行
jps查看，出现QuorumpeerMain则说明成功
