zookeeper环境搭建

下面介绍一下zookeeper单机集群模式环境搭建：

创建目录

/opt/zookeeper/zookeeper1

/opt/zookeeper/zookeeper2

/opt/zookeeper/zookeeper3

以上三个目录为三个zookeeper实例的根目录

/opt/zookeeper/zookeeper1/data

/opt/zookeeper/zookeeper1/datalog

/opt/zookeeper/zookeeper2/data

/opt/zookeeper/zookeeper2/datalog

/opt/zookeeper/zookeeper3/data

/opt/zookeeper/zookeeper3/datalog

创建上述目录分别作为每个实例的数据目录和log目录。

创建每个实例的myid文件：

echo 1 > /opt/zookeeper/zookeeper1/data/myid  

echo 2 > /opt/zookeeper/zookeeper2/data/myid  

echo 3 > /opt/zookeeper/zookeeper3/data/myid

将下载的zookeeper的文件分别复制到/opt/zookeeper/zookeeper1，/opt/zookeeper/zookeeper2，/opt/zookeeper/zookeeper3目录下。

以zookeeper-3.4.10为例，进入 /opt/zookeeper/zookeeper1/zookeeper-3.4.10/conf目录。

cp zoo_sample.cfg 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=/opt/zookeeper/zookeeper1/data

dataLogDir=/opt/zookeeper/zookeeper1/datalog

# 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=192.168.65.121:2881:3881

server.2=192.168.65.121:2882:3882

server.3=192.168.65.121:2883:3883

并修改实例2和实例三的对应配置文件，这里实例2的端口号为2182，实例三的端口号为2183

分别进入每个实例目录下，执行

bin/zkServer.sh start

启动之后，执行：

bin/zkServer.sh status

查看运行状态