ZooKeeper3.4.6的集群部署

ZooKeeper是Apache的一个开源项目,在分布式服务中应用比较广泛。它主要用来解决分布式应用中经常遇到的一些数据管理问题,如:统一命名服务、状态同步、集群管理、配置文件管理、同步锁、队列等。这里主要讲集群中ZooKeeper的部署。

 

1、准备工作

我们准备3台机器做ZooKeeper集群,分别在3台机器上创建ZooKeeper需要的目录。

 

数据存储目录:

mkdir -p /opt/data/zookeeper

 

日志目录:

mkdir -p /opt/logs/zookeeper

 

ZooKeeper 安装包下载:

wget http://mirror.bit.edu.cn/apache/zookeeper/zookeeper-3.4.6/zookeeper-3.4.6.tar.gz

 

JDK的安装见:Linux环境下安装JDK

 

2、ZooKeeper部署

首先解压:

tar -zxvf zookeeper-3.4.6.tar.gz

 

修改zoo.cfg文件的集群配置信息:

cd zookeeper-3.4.6/conf/

cp zoo_sample.cfg zoo.cfg

vim zoo.cfg

 

zoo.cfg配置如下:

# The number of milliseconds of each tick
tickTime=2000

# The number of ticks that the initial
# synchronization phase can take
initLimit=1

# The number of ticks that can pass between
# sending a request and getting an acknowledgement
syncLimit=2

# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just
# example sakes.
dataDir=/opt/data/zookeeper

# 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=4000

# The number of snapshots to retain in dataDir
autopurge.snapRetainCount=100
# Purge task interval in hours
# Set to "0" to disable auto purge feature
autopurge.purgeInterval=24

#Service
server.1=10.100.152.1:1888:2888
server.2=10.100.152.2:1888:2888
server.3=10.100.152.3:1888:2888
 

在log4j.properties中找到zookeeper.log.dir修改日志的存储目录:

vim log4j.properties

zookeeper.root.logger=INFO, CONSOLE
zookeeper.console.threshold=INFO
zookeeper.log.dir=/opt/logs/zookeeper
zookeeper.log.file=zookeeper.log
zookeeper.log.threshold=DEBUG
zookeeper.tracelog.dir=.
zookeeper.tracelog.file=zookeeper_trace.log

 

配置myid本机server服务的标示:

vim /opt/data/zookeeper/myid

输入1后保存退出,到此集群中的第一台机器就配置好了。

 

下面接着配置集群中的第二台和每三台机器:

首先通过scp把zookeeper目录拷贝到其它两台机器上,操作如下:

scp -rp zookeeper-3.4.6 [email protected]:/opt/app/

scp -rp zookeeper-3.4.6 [email protected]:/opt/app/

 

然后到10.100.152.2机器上配置myid本机server服务的标示:

vim /opt/data/zookeeper/myid

输入2后保存退出,到此集群中的第二台机器就配置好了。

 

再到10.100.152.3机器上配置myid本机server服务的标示:

vim /opt/data/zookeeper/myid

输入3后保存退出,到此集群中的第三台机器就配置好了。

 

3、启动ZooKeeper

启动:./zkServer.sh start

停止:./zkServer.sh stop

 

到此ZooKeeper的整个集群就部署完成。

 

注意:如果机器上有防火墙的话,记得配置防火墙端口。

 

 

 

 

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