Centos 搭建 zookeeper

CentOS 前端之家
前端之家收集整理的这篇文章主要介绍了Centos 搭建 zookeeper，前端之家小编觉得挺不错的，现在分享给大家，也给大家做个参考。

安装

zookeeper-3.4.9.tar.gz

下载：

https://mirrors.tuna.tsinghua.edu.cn/apache/zookeeper/stable/zookeeper-3.4.9.tar.gz

为了方便管理，我放在目录/opt/中

解压:

tarzxfzookeeper-3.4.9.tar.gz

进入配置目录：

cdzookeeper-3.4.9/conf

创建配置(直接clone样例配置)：

cpzoo_sample.cfgzoo.cfg

注：zoo_sample.cfg是一个用来demo的例子配置


先配置单机模式：


修改配置：

#Thenumberofmillisecondsofeachtick
tickTime=2000
#Thenumberofticksthattheinitial
#synchronizationphasecantake
initLimit=10
#Thenumberofticksthatcanpassbetween
#sendingarequestandgettinganacknowledgement
syncLimit=5
#thedirectorywherethesnapshotisstored.
#donotuse/tmpforstorage,/tmphereisjust
#examplesakes.
dataDir=/opt/zookeeper-3.4.9/data
//日志文件
dataLogDir=/opt/zookeeper-3.4.9/logs
#theportatwhichtheclientswillconnect
clientPort=2181
#themaximumnumberofclientconnections.
#increasethisifyouneedtohandlemoreclients
#maxClientCnxns=60
#
#Besuretoreadthemaintenancesectionofthe
#administratorguidebeforeturningonautopurge.
#
#http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
#
#ThenumberofsnapshotstoretainindataDir
#autopurge.snapRetainCount=3
#Purgetaskintervalinhours
#Setto"0"todisableautopurgefeature
#autopurge.purgeInterval=1


配置环境变量:

打开系统配置文件：

vim/etc/profile

加入：

exportZOOKEEPER_HOME=/opt/zookeeper-3.4.9/


追加到环境变量$Path中：

exportPATH=$PATH:….$ZOOKEEPER_HOME/bin/

退出：

:wq

重新激活环境变量配置：

[root@centos_105_239bin]#source/etc/profile


启动ZooKeeper:

[root@centos_105_239bin]#zkServer.shstart
ZooKeeperJMXenabledbydefault
Usingconfig:/opt/zookeeper-3.4.9/bin/../conf/zoo.cfg
Startingzookeeper...STARTED


查询zk的状态：

[root@centos_105_239bin]#zkServer.shstatus
ZooKeeperJMXenabledbydefault
Usingconfig:/opt/zookeeper-3.4.9/bin/../conf/zoo.cfg
Mode:standalone


关闭ZooKeeper:

[root@centos_105_239bin]#zkServer.shstop
ZooKeeperJMXenabledbydefault
Usingconfig:/opt/zookeeper-3.4.9/bin/../conf/zoo.cfg
Stoppingzookeeper...STOPPED

重启ZooKeeper(由于当前是关闭状态，所以会有下面no zookeeper的信息):

[root@centos_105_239bin]#zkServer.shrestart
ZooKeeperJMXenabledbydefault
Usingconfig:/opt/zookeeper-3.4.9/bin/../conf/zoo.cfg
ZooKeeperJMXenabledbydefault
Usingconfig:/opt/zookeeper-3.4.9/bin/../conf/zoo.cfg
Stoppingzookeeper...nozookeepertostop(couldnotfindfile/opt/zookeeper-3.4.9/data
/opt/zookeeper-3.4.9/logs/zookeeper_server.pid)
ZooKeeperJMXenabledbydefault
Usingconfig:/opt/zookeeper-3.4.9/bin/../conf/zoo.cfg
Startingzookeeper...STARTED


客户端测试链接服务端：

[root@centos_105_239bin]#zkCli.sh-server127.0.0.1:2181
Connectingto127.0.0.1:2181
2016-11-0122:20:40,226[myid:]-INFO[main:Environment@100]-Clientenvironment:zookeeper.version=3.4.9-1757313,builton08/23/201606:50GMT
2016-11-0122:20:40,229[myid:]-INFO[main:Environment@100]-Clientenvironment:host.name=<NA>
2016-11-0122:20:40,229[myid:]-INFO[main:Environment@100]-Clientenvironment:java.version=1.8.0_111
2016-11-0122:20:40,230[myid:]-INFO[main:Environment@100]-Clientenvironment:java.vendor=OracleCorporation
2016-11-0122:20:40,231[myid:]-INFO[main:Environment@100]-Clientenvironment:java.home=/usr/java/jdk1.8.0_111/jre
2016-11-0122:20:40,231[myid:]-INFO[main:Environment@100]-Clientenvironment:java.class.path=/opt/zookeeper-3.4.9/bin/../build/classes:/opt/zookeeper-3.4.9/bin/../build/lib/*.jar:/opt/zookeeper-3.4.9/bin/../lib/slf4j-log4j12-1.6.1.jar:/opt/zookeeper-3.4.9/bin/../lib/slf4j-api-1.6.1.jar:/opt/zookeeper-3.4.9/bin/../lib/netty-3.10.5.Final.jar:/opt/zookeeper-3.4.9/bin/../lib/log4j-1.2.16.jar:/opt/zookeeper-3.4.9/bin/../lib/jline-0.9.94.jar:/opt/zookeeper-3.4.9/bin/../zookeeper-3.4.9.jar:/opt/zookeeper-3.4.9/bin/../src/java/lib/*.jar:/opt/zookeeper-3.4.9/bin/../conf:
2016-11-0122:20:40,231[myid:]-INFO[main:Environment@100]-Clientenvironment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
2016-11-0122:20:40,231[myid:]-INFO[main:Environment@100]-Clientenvironment:java.io.tmpdir=/tmp
2016-11-0122:20:40,231[myid:]-INFO[main:Environment@100]-Clientenvironment:java.compiler=<NA>
2016-11-0122:20:40,231[myid:]-INFO[main:Environment@100]-Clientenvironment:os.name=Linux
2016-11-0122:20:40,231[myid:]-INFO[main:Environment@100]-Clientenvironment:os.arch=amd64
2016-11-0122:20:40,231[myid:]-INFO[main:Environment@100]-Clientenvironment:os.version=3.10.0-327.el7.x86_64
2016-11-0122:20:40,231[myid:]-INFO[main:Environment@100]-Clientenvironment:user.name=root
2016-11-0122:20:40,231[myid:]-INFO[main:Environment@100]-Clientenvironment:user.home=/root
2016-11-0122:20:40,231[myid:]-INFO[main:Environment@100]-Clientenvironment:user.dir=/opt/zookeeper-3.4.9/bin
2016-11-0122:20:40,232[myid:]-INFO[main:ZooKeeper@438]-Initiatingclientconnection,connectString=127.0.0.1:2181sessionTimeout=30000watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@446cdf90
WelcometoZooKeeper!
JLinesupportisenabled
2016-11-0122:20:40,345[myid:]-INFO[main-SendThread(127.0.0.1:2181):ClientCnxn$SendThread@1032]-openingsocketconnectiontoserver127.0.0.1/127.0.0.1:2181.WillnotattempttoauthenticateusingSASL(unknownerror)
2016-11-0122:20:40,505[myid:]-WARN[main-SendThread(127.0.0.1:2181):ClientCnxn$SendThread@1162]-Session0x0forservernull,unexpectederror,closingsocketconnectionandattemptingreconnect
java.net.ConnectException:Connectionrefused
atsun.nio.ch.SocketChannelImpl.checkConnect(NativeMethod)
atsun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
atorg.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:361)
atorg.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1141)

解决：重启Zookeeper服务 - zkServer.sh restart


从新测试客户端链接服务端：

[root@centos_105_239bin]#zkCli.sh
Connectingtolocalhost:2181
2016-11-0217:16:01,054[myid:]-INFO[main:Environment@100]-Clientenvironment:zookeeper.version=3.4.9-1757313,builton08/23/201606:50GMT
2016-11-0217:16:01,062[myid:]-INFO[main:Environment@100]-Clientenvironment:host.name=Centos_105_239
2016-11-0217:16:01,062[myid:]-INFO[main:Environment@100]-Clientenvironment:java.version=1.8.0_111
2016-11-0217:16:01,066[myid:]-INFO[main:Environment@100]-Clientenvironment:java.vendor=OracleCorporation
2016-11-0217:16:01,066[myid:]-INFO[main:Environment@100]-Clientenvironment:java.home=/usr/java/jdk1.8.0_111/jre
2016-11-0217:16:01,066[myid:]-INFO[main:Environment@100]-Clientenvironment:java.class.path=/opt/zookeeper-3.4.9/bin/../build/classes:/opt/zookeeper-3.4.9/bin/../build/lib/*.jar:/opt/zookeeper-3.4.9/bin/../lib/slf4j-log4j12-1.6.1.jar:/opt/zookeeper-3.4.9/bin/../lib/slf4j-api-1.6.1.jar:/opt/zookeeper-3.4.9/bin/../lib/netty-3.10.5.Final.jar:/opt/zookeeper-3.4.9/bin/../lib/log4j-1.2.16.jar:/opt/zookeeper-3.4.9/bin/../lib/jline-0.9.94.jar:/opt/zookeeper-3.4.9/bin/../zookeeper-3.4.9.jar:/opt/zookeeper-3.4.9/bin/../src/java/lib/*.jar:/opt/zookeeper-3.4.9/bin/../conf:
2016-11-0217:16:01,067[myid:]-INFO[main:Environment@100]-Clientenvironment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
2016-11-0217:16:01,067[myid:]-INFO[main:Environment@100]-Clientenvironment:java.io.tmpdir=/tmp
2016-11-0217:16:01,067[myid:]-INFO[main:Environment@100]-Clientenvironment:java.compiler=<NA>
2016-11-0217:16:01,067[myid:]-INFO[main:Environment@100]-Clientenvironment:os.name=Linux
2016-11-0217:16:01,067[myid:]-INFO[main:Environment@100]-Clientenvironment:os.arch=amd64
2016-11-0217:16:01,067[myid:]-INFO[main:Environment@100]-Clientenvironment:os.version=3.10.0-327.el7.x86_64
2016-11-0217:16:01,068[myid:]-INFO[main:Environment@100]-Clientenvironment:user.name=root
2016-11-0217:16:01,068[myid:]-INFO[main:Environment@100]-Clientenvironment:user.home=/root
2016-11-0217:16:01,068[myid:]-INFO[main:Environment@100]-Clientenvironment:user.dir=/opt/zookeeper-3.4.9/bin
2016-11-0217:16:01,073[myid:]-INFO[main:ZooKeeper@438]-Initiatingclientconnection,connectString=localhost:2181sessionTimeout=30000watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@446cdf90
WelcometoZooKeeper!
JLinesupportisenabled
2016-11-0217:16:06,165[myid:]-INFO[main-SendThread(localhost:2181):ClientCnxn$SendThread@1032]-openingsocketconnectiontoserverlocalhost/127.0.0.1:2181.WillnotattempttoauthenticateusingSASL(unknownerror)
2016-11-0217:16:06,306[myid:]-INFO[main-SendThread(localhost:2181):ClientCnxn$SendThread@876]-Socketconnectionestablishedtolocalhost/127.0.0.1:2181,initiatingsession
2016-11-0217:16:06,328[myid:]-INFO[main-SendThread(localhost:2181):ClientCnxn$SendThread@1299]-Sessionestablishmentcompleteonserverlocalhost/127.0.0.1:2181,sessionid=0x15823b834e60008,negotiatedtimeout=30000

WATCHER::

WatchedEventstate:SyncConnectedtype:Nonepath:null
[zk:localhost:2181(CONNECTED)0]#

见到最后一行才算是成功。

测试


创建一个节点

[zk:localhost:2181(CONNECTED)3]create/nodehelloword
Created/node
[zk:localhost:2181(CONNECTED)4]ls/
[node,zookeeper]

获取节点

[zk:localhost:2181(CONNECTED)8]get/node
helloword
cZxid=0x17
ctime=WedNov0217:17:25CST2016
mZxid=0x17
mtime=WedNov0217:17:25CST2016
pZxid=0x17
cversion=0
dataVersion=0
aclVersion=0
ephemeralOwner=0x0
dataLength=9
numChildren=0


设置节点

[zk:localhost:2181(CONNECTED)9]set/nodehelloword!
cZxid=0x17
ctime=WedNov0217:17:25CST2016
mZxid=0x1d
mtime=WedNov0217:19:40CST2016
pZxid=0x17
cversion=0
dataVersion=1
aclVersion=0
ephemeralOwner=0x0
dataLength=10
numChildren=0


再次获取节点，看看变化：

[zk:localhost:2181(CONNECTED)10]get/node
helloword!
cZxid=0x17
ctime=WedNov0217:17:25CST2016
mZxid=0x1d
mtime=WedNov0217:19:40CST2016
pZxid=0x17
cversion=0
dataVersion=1
aclVersion=0
ephemeralOwner=0x0
dataLength=10
numChildren=0


测试删除节点：

[zk:localhost:2181(CONNECTED)14]ls/
[node,zookeeper,test]
[zk:localhost:2181(CONNECTED)15]delete/test
[zk:localhost:2181(CONNECTED)16]ls/
[node,zookeeper]


配置集群


再搭建三个同样的虚拟环境，最简单的是直接clone上面的单机，不过要记住重新初始化网卡信息，具体的不再讲怎么操作了，有问题请直接留言。


修改zookeeper的参数：

#Thenumberof
ticksthattheinitial
#synchronization
phasecantake
initLimit=10

#Thenumberof
ticksthatcanpassbetween
#sendingarequest
andgettinganacknowledgement
syncLimit=5

server.1=192.168.1.156:2888:3888
server.2=192.168.1.158:2888:3888
server.3=192.168.1.159:2888:3888


端口说明：

2888：集群中服务器的通讯

3888：选领导


具体的测试就不再叙述，在搭建中遇到的问题，请参阅《zookeeper环境搭建中遇到的问题》



参考：http://www.ibm.com/developerworks/cn/opensource/os-cn-zookeeper/#ibm-pcon

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