zookeeper集群搭建

今天是双十一，这个写的比较水。没啥实在东西。在工厂里面。没办法虽然是java组的，临时支援到其他组，帮助解决一些问题。现在很困，但是随便写点东西。打发打发时间吧。好困呐。怎么写代码到4点无所谓。。
双十一，你们买的爽，但是我们累到炸了。
扯了好多犊子 = = 开始。

zookeeper其实对于服务器集群确实是一个不错的中间件，可以将各种中间件相互链接起来。有点类似nginx对http请求的负载均衡。它将一个服务的状态保存在各个单机中，当某一个单机状态发生了改变了，它会通知所有的单机发生的变化。也就是watch机制。并且无论访问其他哪一个单机，状态都是一样的。
而最近遇到一个乐观锁的例子，解决同一个定时器的主备问题。类似抢位子。这个之后我会贴出代码。

zookeeper中的角色，有三种，借用其他的博客的一个图片

这里写图片描述

原文地址

http://cailin.iteye.com/blog/2014486/

1 . 搭建环境

MacBook pro 15款840 
VMWare Fusion8 
Centos 6.7 
zookeeper-3.4.6.tar.gz

开始贴代码了。

node1:

[email protected]'s password: 

Last login: Mon Nov  9 16:46:49 2015 from 192.148.1.102

[sjk@rabbitmq-node1 ~]$ sudo -i

[sudo] password for sjk: 

[root@rabbitmq-node1 ~]# cd /usr/local/

[root@rabbitmq-node1 local]# ls

bin  games    jdk1.7.0_80  lib64    mongodb  share  tomcat

etc  include  lib          libexec  sbin     src    zookeeper

[root@rabbitmq-node1 local]# cd zookeeper/

[root@rabbitmq-node1 zookeeper]# ls

bin          dist-maven       LICENSE.txt           src

build.xml    docs             NOTICE.txt            zookeeper-3.4.6.jar

CHANGES.txt  ivysettings.xml  README_packaging.txt  zookeeper-3.4.6.jar.asc

conf         ivy.xml          README.txt            zookeeper-3.4.6.jar.md5

contrib      lib              recipes               zookeeper-3.4.6.jar.sha1

[root@rabbitmq-node1 zookeeper]# cd conf/

[root@rabbitmq-node1 conf]# ls

configuration.xsl  log4j.properties  zoo.cfg  zoo_sample.cfg

[root@rabbitmq-node1 conf]# vim zoo.cfg 

[root@rabbitmq-node1 conf]# cat 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=/zookeeper/data

# 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

dataLogDir=/zookeeper/log

# Be sure to read the maintenance section of the 

# administrator guide before turning on autopurge.

server.1=192.148.1.104:2888:3888

server.2=192.148.1.105:2888:3888

server.3=192.148.1.106:2888:3888

# 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

[root@rabbitmq-node1 conf]# vim /etc/profile

[root@rabbitmq-node1 conf]# source /etc/profile

[root@rabbitmq-node1 conf]# mkdir -p /zookeeper/log

[root@rabbitmq-node1 conf]# mkdir -p /zookeeper/data

[root@rabbitmq-node1 conf]# cd /zookeeper/

[root@rabbitmq-node1 zookeeper]# ls

data  log

[root@rabbitmq-node1 zookeeper]# echo $ZOOKEEPER_HOME

/usr/local/zookeeper

[root@rabbitmq-node1 zookeeper]# cd /usr/local/zookeeper/

[root@rabbitmq-node1 zookeeper]# ls

bin          dist-maven       LICENSE.txt           src

build.xml    docs             NOTICE.txt            zookeeper-3.4.6.jar

CHANGES.txt  ivysettings.xml  README_packaging.txt  zookeeper-3.4.6.jar.asc

conf         ivy.xml          README.txt            zookeeper-3.4.6.jar.md5

contrib      lib              recipes               zookeeper-3.4.6.jar.sha1
//dataDir下告诉本机的id
[root@rabbitmq-node1 zookeeper]# cd /zookeeper/data/

[root@rabbitmq-node1 data]# ls

[root@rabbitmq-node1 data]# vim myid

[root@rabbitmq-node1 data]# cat myid 

1

[root@rabbitmq-node1 data]# scp -r /usr/local/zookeeper [email protected]:/usr/local/

[root@rabbitmq-node1 data]# scp -r /usr/local/zookeeper  [email protected]:/usr/local/

[root@rabbitmq-node1 data]# cd /usr/local/zookeeper/bin/

[root@rabbitmq-node1 bin]# ls

README.txt    zkCli.cmd  zkEnv.cmd  zkServer.cmd

zkCleanup.sh  zkCli.sh   zkEnv.sh   zkServer.sh
//三个启动很快。如果很慢 你将会在日志看到报错。 但是重启一下就行了
[root@rabbitmq-node1 bin]# ./zkServer.sh start

JMX enabled by default

Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg

Starting zookeeper ... STARTED

[root@rabbitmq-node1 bin]# ./zkServer.sh status

JMX enabled by default

Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg

Mode: follower

[root@rabbitmq-node1 bin]# jps

2344 QuorumPeerMain

2398 Jps

[root@rabbitmq-node1 bin]# 

[root@rabbitmq-node1 bin]# ./zkServer.sh start

JMX enabled by default

Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg

Starting zookeeper … STARTED

[root@rabbitmq-node1 bin]# ./zkServer.sh status

JMX enabled by default
Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg
Mode: follower

[root@rabbitmq-node1 bin]# jps
2344 QuorumPeerMain
2398 Jps

//查看集群状态  为跟随者
[root@rabbitmq-node1 bin]# ./zkServer.sh status
JMX enabled by default
Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg
Mode: follower
//这是我关掉了其他两个服务后只剩下一个时候
[root@rabbitmq-node1 bin]# ./zkServer.sh status
JMX enabled by default
Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg
Error contacting service. It is probably not running.

[root@rabbitmq-node1 bin]# ./zkServer.sh stop
JMX enabled by default
Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg
Stopping zookeeper ... STOPPED
[root@rabbitmq-node1 bin]#

node2:

[email protected]'s password: 

Last login: Mon Nov  9 04:15:34 2015 from 192.148.1.102

[sjk@rabbitmq-node2 ~]$ sudo -i

[sudo] password for sjk: 

[root@rabbitmq-node2 ~]# cd /usr/local/

[root@rabbitmq-node2 local]# ls

bin  games    jdk1.7.0_80  lib64    mongodb  openssl  share  tomcat  zookeeper

etc  include  lib          libexec  nginx    sbin     src    usr

[root@rabbitmq-node2 local]# mkdir -p /zookeeper/log

[root@rabbitmq-node2 local]# mkdir -p /zookeeper/data

[root@rabbitmq-node2 local]# cd /zookeeper/data/

[root@rabbitmq-node2 data]# vim myid

[root@rabbitmq-node2 data]# cat myid 

2

[root@rabbitmq-node2 data]# vim /etc/profile

[root@rabbitmq-node2 data]# source /etc/profile

[root@rabbitmq-node2 data]# ls

myid

[root@rabbitmq-node2 data]# cd /usr/local/zookeeper/

[root@rabbitmq-node2 zookeeper]# cd b

-bash: cd: b: 没有那个文件或目录

[root@rabbitmq-node2 zookeeper]# cd bin/

[root@rabbitmq-node2 bin]# ls

README.txt    zkCli.cmd  zkEnv.cmd  zkServer.cmd

zkCleanup.sh  zkCli.sh   zkEnv.sh   zkServer.sh

[root@rabbitmq-node2 bin]# ./zkServer.sh start

JMX enabled by default

Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg

Starting zookeeper ... STARTED

[root@rabbitmq-node2 bin]# ./zkServer.sh status

JMX enabled by default

Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg

Mode: leader

[root@rabbitmq-node2 bin]# jps

2369 QuorumPeerMain

2429 Jps

[root@rabbitmq-node2 bin]# 

[root@rabbitmq-node2 bin]# ./zkServer.sh start

JMX enabled by default

Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg

Starting zookeeper ... STARTED
//为领导者
[root@rabbitmq-node2 bin]# ./zkServer.sh status

JMX enabled by default

Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg

Mode: leader

[root@rabbitmq-node2 bin]# jps

2369 QuorumPeerMain

2429 Jps

[root@rabbitmq-node2 bin]# ./zkServer.sh stop

JMX enabled by default

Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg

Stopping zookeeper ... STOPPED

node3：

[email protected]'s password: 

Last login: Mon Nov  9 16:47:06 2015 from 192.148.1.102

[sjk@rabbitmq-node3 ~]$ sudo -i

[sudo] password for sjk: 

[root@rabbitmq-node3 ~]# cd /usr/local/zookeeper/

[root@rabbitmq-node3 zookeeper]# ls

bin          dist-maven       LICENSE.txt           src

build.xml    docs             NOTICE.txt            zookeeper-3.4.6.jar

CHANGES.txt  ivysettings.xml  README_packaging.txt  zookeeper-3.4.6.jar.asc

conf         ivy.xml          README.txt            zookeeper-3.4.6.jar.md5

contrib      lib              recipes               zookeeper-3.4.6.jar.sha1

[root@rabbitmq-node3 zookeeper]# cd ..

[root@rabbitmq-node3 local]# ls

bin  games    jdk1.7.0_80  lib64    mongodb   sbin   src
etc  include  lib          libexec  python27  share  zookeeper

[root@rabbitmq-node3 local]# mkdir -p /zookeeper/log

[root@rabbitmq-node3 local]# mkdir -p /zookeeper/data

[root@rabbitmq-node3 local]# cd /zookeeper/data/

[root@rabbitmq-node3 data]# vim myid

[root@rabbitmq-node3 data]# cat myid 

3
//设置zookeeperhome的环境变量
[root@rabbitmq-node3 data]# vim /etc/profile

[root@rabbitmq-node3 data]# source /etc/profile

[root@rabbitmq-node3 data]# cd /usr/local/zookeeper/bin/

[root@rabbitmq-node3 bin]# ls

README.txt    zkCli.cmd  zkEnv.cmd  zkServer.cmd

zkCleanup.sh  zkCli.sh   zkEnv.sh   zkServer.sh

[root@rabbitmq-node3 bin]# ./zkServer.sh start

JMX enabled by default

Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg

Starting zookeeper ... STARTED

[root@rabbitmq-node3 bin]# ./zkServer.sh status

JMX enabled by default

Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg

Mode: follower

[root@rabbitmq-node3 bin]# jps

2344 QuorumPeerMain

2399 Jps

//将其中一个节点关闭掉
[root@rabbitmq-node3 bin]# ./zkServer.sh status

JMX enabled by default

Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg

Mode: leader

[root@rabbitmq-node3 bin]# ./zkServer.sh stop

JMX enabled by default

Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg

Stopping zookeeper ... STOPPED

[root@rabbitmq-node3 bin]#

真水。等之后和solr的整合吧。好累 = = 困。。。

欢迎光临我的个人博客

zookeeper集群搭建

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