搭建 Zookeeper Cluster

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下载 Zookeeper

目前的版本是 3.4.13, 下载最新稳定版, 在本地配置一个为集群。

配置实例

把 zookeeper 解压到你的用户根目录下,创建三个实例配置文件

cp zoo_sample.cfg zoo-slave1.cfg
cp zoo_sample.cfg zoo-slave2.cfg
cp zoo_sample.cfg zoo-slave3.cfg

修改配置文件:

# sub zoo-slave1.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=/users/fengd/zk-data/slave1/data

# the port at which the clients will connect
clientPort=2181

server.1=localhost:2887:3887
server.2=localhost:2888:3888
server.3=localhost:2889:3889

# 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.
#
# 
#
# 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

配置文件都有详细的说明,需要创建的文件夹是 dataDir, 每个配置文件制定的文件目录都需要创建。

此外还需要在对应的每个 dataDir 下创建每个 instance 对应的 id

每个 myid 的值对应的是你的配置文件里, server.{id} 的值, 因为在一台机器上模拟一个伪集群,所以 clientPort 也都是不同的。

启动集群

通过不同的配置文件启动 instance

# cd ~/zookeeper/bin

./zkServer.sh start ../conf/zoo-slave1.cfg
./zkServer.sh start ../conf/zoo-slave2.cfg
./zkServer.sh start ../conf/zoo-slave3.cfg

查看状态

查看是否启动成功

jps

13120 QuorumPeerMain
13174 QuorumPeerMain
13191 Jps
13147 QuorumPeerMain

产看每个实例的状态

启动成功,装好了再来玩~

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