Zookeeper集群搭建

1、环境CentOS6.8 + jdk1.8.0_151（jdk安装请参考CentOS 搭建JDK环境 ）

2、下载zookeeper-3.4.11.tar.gz，下载地址：https://www.apache.org/dyn/closer.cgi/zookeeper/

3、安装

 3.1、上传zookeeper-3.4.11.tar.gz至/usr/dev/zookeeper安装目录下

 3.2、在zookeeper创建三个子目录zookeeper1、zookeeper2、zookeeper3

 3.3、将zookeeper-3.4.11.tar.gz解压至zookeeper目录

 

 tar -zxvf zookeeper-3.4.11.tar.gz

  3.4、将解压后的目录拷贝至zookeeper1、zookeeper2、zookeeper3

4、修改zookeeper配置文件

   4.1、修改zookeeper1中的zoo.cfg文件，zookeeper2、zookeeper3参考zookeeper1进行修改

 

cd /usr/dev/zookeeper/zookeeper1/zookeeper-3.4.11/conf
cp zoo_simple.cfg zoo.cfg
vi zoo.cfg

 

 

# 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/dev/zookeeper/zookeeper1/zookeeper-3.4.11/data
dataLogDir=/usr/dev/zookeeper/zookeeper1/zookeeper-3.4.11/logs
# 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=192.168.117.128:2881:3881
server.2=192.168.117.128:2882:3882
server.3=192.168.117.128:2883:3883

说明：

   initLimit=10: 对于从节点最初连接到主节点时的超时时间，单位为tick值的倍数。

   syncLimit=5：对于主节点与从节点进行同步操作时的超时时间，单位为tick值的倍数。

   dataDir: 用于配置内存数据库保存的模糊快照的目录。即刚刚创建的data文件夹就是在此目录中。文件信息都存放在data目录下。

   clientPort=2181: 表示客户端所连接的服务器所监听的端口号，默认是2181。即zookeeper对外提供访问的端口号。

   server.1=192.168.117.128:2881:3881

   server.2=192.168.117.128:2882:3882

   server.3=192.168.117.128:2883:3883

   server.X=A:B:C X-代表服务器编号 A-代表ip B和C-代表端口，这个端口用来系统之间通信

   同理配置

  4.2、设置zookeeper1中的myid，zookeeper2、zookeeper3参考zookeeper1进行修改

  在/usr/dev/zookeeper/zookeeper1/zookeeper-3.4.11/data目录下创建myid文件，myid的内容为server.X中X的值，即zookeeper1下的myid内容为1

 

cd /usr/dev/zookeeper/zookeeper1/zookeeper-3.4.11/data
vi myid

 

 

 

 

5、启动zookeeper，/zookeeper-3.4.11/bin目录下

  zkServer.sh start　　(启动)

  zkServer.sh restart　(重启)

  zkServer.sh status　 (查看状态)

  zkServer.sh stop　　(关闭)

  zkServer.sh start-foreground　　(以打印日志方式启动)

  注意：启动前请先配置防火墙，将配置文件中的端口设置为允许访问

 cd /usr/dev/zookeeper/
./zookeeper1/zookeeper-3.4.11/bin/zkServer.sh start
./zookeeper2/zookeeper-3.4.11/bin/zkServer.sh start
./zookeeper3/zookeeper-3.4.11/bin/zkServer.sh start