安装
zookeeper-3.4.9.tar.gz
下载：
为了方便管理，我放在目录/opt/中
解压:
tar zxf zookeeper-3.4.9.tar.gz
进入配置目录：
cd zookeeper-3.4.9/conf
创建配置(直接clone样例配置)：
cp zoo_sample.cfg zoo.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：
# The number of milliseconds of each ticktickTime=2000# The number of ticks that the initial# synchronization phase can takeinitLimit=10# The number of ticks that can pass between# sending a request and getting an acknowledgementsyncLimit=5# the directory where the snapshot is stored.# do not use /tmp for storage, /tmp here is just# example sakes.dataDir=/opt/zookeeper-3.4.9/data// 日志文件dataLogDir=/opt/zookeeper-3.4.9/logs# the port at which the clients will connectclientPort=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
配置环境变量:
打开系统配置文件：
vim /etc/profile
加入：
export ZOOKEEPER_HOME=/opt/zookeeper-3.4.9/
追加到环境变量$Path中：
export PATH=$PATH:….$ZOOKEEPER_HOME/bin/
退出：
:wq
重新激活环境变量配置：
[root@centos_105_239 bin]# source /etc/profile
启动ZooKeeper:
[root@centos_105_239 bin]# zkServer.sh startZooKeeper JMX enabled by defaultUsing config: /opt/zookeeper-3.4.9/bin/../conf/zoo.cfgStarting zookeeper ... STARTED
查询zk的状态：
[root@centos_105_239 bin]# zkServer.sh statusZooKeeper JMX enabled by defaultUsing config: /opt/zookeeper-3.4.9/bin/../conf/zoo.cfgMode: standalone
关闭ZooKeeper:
[root@centos_105_239 bin]# zkServer.sh stopZooKeeper JMX enabled by defaultUsing config: /opt/zookeeper-3.4.9/bin/../conf/zoo.cfgStopping zookeeper ... 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_239 bin]# zkServer.sh restartZooKeeper JMX enabled by defaultUsing config: /opt/zookeeper-3.4.9/bin/../conf/zoo.cfgZooKeeper JMX enabled by defaultUsing config: /opt/zookeeper-3.4.9/bin/../conf/zoo.cfgStopping zookeeper ... no zookeeper to stop (could not find file /opt/zookeeper-3.4.9/data/opt/zookeeper-3.4.9/logs/zookeeper_server.pid)ZooKeeper JMX enabled by defaultUsing config: /opt/zookeeper-3.4.9/bin/../conf/zoo.cfgStarting zookeeper ... STARTED
客户端测试链接服务端：
[root@centos_105_239 bin]# zkCli.sh -server 127.0.0.1:2181Connecting to 127.0.0.1:21812016-11-01 22:20:40,226 [myid:] - INFO [main:Environment@100] - Client environment:zookeeper.version=3.4.9-1757313, built on 08/23/2016 06:50 GMT2016-11-01 22:20:40,229 [myid:] - INFO [main:Environment@100] - Client environment:host.name=2016-11-01 22:20:40,229 [myid:] - INFO [main:Environment@100] - Client environment:java.version=1.8.0_1112016-11-01 22:20:40,230 [myid:] - INFO [main:Environment@100] - Client environment:java.vendor=Oracle Corporation2016-11-01 22:20:40,231 [myid:] - INFO [main:Environment@100] - Client environment:java.home=/usr/java/jdk1.8.0_111/jre2016-11-01 22:20:40,231 [myid:] - INFO [main:Environment@100] - Client environment: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:2016-11-01 22:20:40,231 [myid:] - INFO [main:Environment@100] - Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib2016-11-01 22:20:40,231 [myid:] - INFO [main:Environment@100] - Client environment:java.io.tmpdir=/tmp2016-11-01 22:20:40,231 [myid:] - INFO [main:Environment@100] - Client environment:java.compiler= 2016-11-01 22:20:40,231 [myid:] - INFO [main:Environment@100] - Client environment:os.name=Linux2016-11-01 22:20:40,231 [myid:] - INFO [main:Environment@100] - Client environment:os.arch=amd642016-11-01 22:20:40,231 [myid:] - INFO [main:Environment@100] - Client environment:os.version=3.10.0-327.el7.x86_642016-11-01 22:20:40,231 [myid:] - INFO [main:Environment@100] - Client environment:user.name=root2016-11-01 22:20:40,231 [myid:] - INFO [main:Environment@100] - Client environment:user.home=/root2016-11-01 22:20:40,231 [myid:] - INFO [main:Environment@100] - Client environment:user.dir=/opt/zookeeper-3.4.9/bin2016-11-01 22:20:40,232 [myid:] - INFO [main:ZooKeeper@438] - Initiating client connection, connectString=127.0.0.1:2181 sessionTimeout=30000 watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@446cdf90Welcome to ZooKeeper!JLine support is enabled2016-11-01 22:20:40,345 [myid:] - INFO [main-SendThread(127.0.0.1:2181):ClientCnxn$SendThread@1032] - Opening socket connection to server 127.0.0.1/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)2016-11-01 22:20:40,505 [myid:] - WARN [main-SendThread(127.0.0.1:2181):ClientCnxn$SendThread@1162] - Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnectjava.net.ConnectException: Connection refusedat sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:361)at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1141)
解决：重启Zookeeper服务 - zkServer.sh restart
重新测试客户端链接服务端：
[root@centos_105_239bin]# zkCli.shConnecting tolocalhost:21812016-11-0217:16:01,054 [myid:] - INFO [main:Environment@100] - Clientenvironment:zookeeper.version=3.4.9-1757313, built on 08/23/2016 06:50 GMT2016-11-0217:16:01,062 [myid:] - INFO [main:Environment@100] - Client environment:host.name=Centos_105_2392016-11-0217:16:01,062 [myid:] - INFO [main:Environment@100] - Client environment:java.version=1.8.0_1112016-11-0217:16:01,066 [myid:] - INFO [main:Environment@100] - Client environment:java.vendor=OracleCorporation2016-11-0217:16:01,066 [myid:] - INFO [main:Environment@100] - Clientenvironment:java.home=/usr/java/jdk1.8.0_111/jre2016-11-0217:16:01,066 [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/lib2016-11-0217:16:01,067 [myid:] - INFO [main:Environment@100] - Client environment:java.io.tmpdir=/tmp2016-11-0217:16:01,067 [myid:] - INFO [main:Environment@100] - Client environment:java.compiler=2016-11-0217:16:01,067 [myid:] - INFO [main:Environment@100] - Client environment:os.name=Linux2016-11-0217:16:01,067 [myid:] - INFO [main:Environment@100] - Client environment:os.arch=amd642016-11-0217:16:01,067 [myid:] - INFO [main:Environment@100] - Clientenvironment:os.version=3.10.0-327.el7.x86_642016-11-0217:16:01,068 [myid:] - INFO [main:Environment@100] - Client environment:user.name=root2016-11-0217:16:01,068 [myid:] - INFO [main:Environment@100] - Client environment:user.home=/root2016-11-0217:16:01,068 [myid:] - INFO [main:Environment@100] - Clientenvironment:user.dir=/opt/zookeeper-3.4.9/bin2016-11-0217:16:01,073 [myid:] - INFO [main:ZooKeeper@438] - Initiating client connection,connectString=localhost:2181 sessionTimeout=30000watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@446cdf90Welcome toZooKeeper!JLine support isenabled2016-11-0217:16:06,165 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@1032] - Openingsocket connection to server localhost/127.0.0.1:2181. Will not attempt toauthenticate using SASL (unknown error)2016-11-0217:16:06,306 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@876] - Socketconnection established to localhost/127.0.0.1:2181, initiating session2016-11-0217:16:06,328 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@1299] - Sessionestablishment complete on server localhost/127.0.0.1:2181, sessionid =0x15823b834e60008, negotiated timeout = 30000 WATCHER:: WatchedEventstate:SyncConnected type:None path: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 /node hellowordCreated /node[zk:localhost:2181(CONNECTED) 4] ls /[node, zookeeper]
获取节点
[zk:localhost:2181(CONNECTED) 8] get /nodehellowordcZxid = 0x17ctime = Wed Nov 0217:17:25 CST 2016mZxid = 0x17mtime = Wed Nov 0217:17:25 CST 2016pZxid = 0x17cversion = 0dataVersion = 0aclVersion = 0ephemeralOwner = 0x0dataLength = 9numChildren = 0
设置节点
[zk:localhost:2181(CONNECTED) 9] set /node helloword!cZxid = 0x17ctime = Wed Nov 0217:17:25 CST 2016mZxid = 0x1dmtime = Wed Nov 0217:19:40 CST 2016pZxid = 0x17cversion = 0dataVersion = 1aclVersion = 0ephemeralOwner = 0x0dataLength = 10numChildren = 0
再次获取节点，看看变化：
[zk:localhost:2181(CONNECTED) 10] get /nodehelloword!cZxid = 0x17ctime = Wed Nov 0217:17:25 CST 2016mZxid = 0x1dmtime = Wed Nov 0217:19:40 CST 2016pZxid = 0x17cversion = 0dataVersion = 1aclVersion = 0ephemeralOwner = 0x0dataLength = 10numChildren = 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：
# The number ofticks that the initial# synchronizationphase can takeinitLimit=10 # The number ofticks that can pass between# sending a requestand getting an acknowledgementsyncLimit=5 server.1=192.168.1.156:2888:3888server.2=192.168.1.158:2888:3888server.3=192.168.1.159:2888:3888
端口用途：
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《》
参考：