1.从下载程序包。
2.解压。
[dev@localhost software]$ tar xzvf zookeeper-3.4.6.tar.gz
3.进入zookeeper目录后创建data目录。
[dev@localhost software]$ cd zookeeper-3.4.6[dev@localhost software]$ mkdir data[dev@localhost software]$ cd data[dev@localhost software]$ touch myid
myid这个文件必须创建，，不然启动的时候会跑出下面的异常。
[dev@localhost bin]$ ./zkServer.sh start-foregroundJMX enabled by defaultUsing config: /home/dev/zookeeper/zookeeper1/bin/../conf/zoo.cfg2015-03-12 16:06:38,155 [myid:] – INFO [main:QuorumPeerConfig@101] – Reading configuration from: /home/dev/zookeeper/zookeeper1/bin/../conf/zoo.cfg2015-03-12 16:06:38,159 [myid:] – INFO [main:QuorumPeerConfig@334] – Defaulting to majority quorums2015-03-12 16:06:38,161 [myid:] – ERROR [main:QuorumPeerMain@85] – Invalid config, exiting abnormallyorg.apache.zookeeper.server.quorum.QuorumPeerConfig$ConfigException: Error processing /home/dev/zookeeper/zookeeper1/bin/../conf/zoo.cfgat org.apache.zookeeper.server.quorum.QuorumPeerConfig.parse(QuorumPeerConfig.java:121)at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:101)at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:78)Caused by: java.lang.IllegalArgumentException: /home/dev/zookeeper/zookeeper1/data/myid file is missingat org.apache.zookeeper.server.quorum.QuorumPeerConfig.parseProperties(QuorumPeerConfig.java:344)at org.apache.zookeeper.server.quorum.QuorumPeerConfig.parse(QuorumPeerConfig.java:117)… 2 moreInvalid config, exiting abnormally
myid文件里必须要有内容，其值对应zoo.cfg中server的id。有点绕，我也是试了好多次才配好的。也就说，假如集群的配置如下，那问题来了，怎么区分当前启动的zookeeper是哪一个呢？就是通过myid文件来区分的，第1个zookeeper服务的myid文件的内容就是1，其它就以此类推了。如果myid配错了，后果很严重——zookeeper服务起不来，O(∩_∩)O哈哈~，并且报下面的异常。
server.1=localhost:2888:3888server.2=localhost:2889:3889server.3=localhost:2890:3890[dev@localhost bin]$ ./zkServer.sh start-foregroundJMX enabled by defaultUsing config: /home/dev/zookeeper/zookeeper2/bin/../conf/zoo.cfg2015-03-12 16:09:35,422 [myid:] – INFO [main:QuorumPeerConfig@101] – Reading configuration from: /home/dev/zookeeper/zookeeper2/bin/../conf/zoo.cfg2015-03-12 16:09:35,426 [myid:] – INFO [main:QuorumPeerConfig@334] – Defaulting to majority quorums2015-03-12 16:09:35,434 [myid:0] – INFO [main:DatadirCleanupManager@78] – autopurge.snapRetainCount set to 32015-03-12 16:09:35,434 [myid:0] – INFO [main:DatadirCleanupManager@79] – autopurge.purgeInterval set to 02015-03-12 16:09:35,435 [myid:0] – INFO [main:DatadirCleanupManager@101] – Purge task is not scheduled.2015-03-12 16:09:35,455 [myid:0] – INFO [main:QuorumPeerMain@127] – Starting quorum peer2015-03-12 16:09:35,472 [myid:0] – INFO [main:NIOServerCnxnFactory@94] – binding to port 0.0.0.0/0.0.0.0:21822015-03-12 16:09:35,500 [myid:0] – INFO [main:QuorumPeer@913] – tickTime set to 20002015-03-12 16:09:35,501 [myid:0] – INFO [main:QuorumPeer@933] – minSessionTimeout set to -12015-03-12 16:09:35,501 [myid:0] – INFO [main:QuorumPeer@944] – maxSessionTimeout set to -12015-03-12 16:09:35,502 [myid:0] – INFO [main:QuorumPeer@959] – initLimit set to 102015-03-12 16:09:35,519 [myid:0] – ERROR [main:QuorumPeer@171] – Setting LearnerType to PARTICIPANT but 0 not in QuorumPeers.2015-03-12 16:09:35,530 [myid:0] – INFO [main:QuorumPeer@429] – currentEpoch not found! Creating with a reasonable default of 0. This should only happen when you are upgrading your installation2015-03-12 16:09:35,591 [myid:0] – INFO [main:QuorumPeer@444] – acceptedEpoch not found! Creating with a reasonable default of 0. This should only happen when you are upgrading your installation2015-03-12 16:09:35,598 [myid:0] – ERROR [main:QuorumPeerMain@89] – Unexpected exception, exiting abnormallyjava.lang.RuntimeException: My id 0 not in the peer listat org.apache.zookeeper.server.quorum.QuorumPeer.startLeaderElection(QuorumPeer.java:479)at org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:411)at org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:151)at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:111)at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:78)4.修改zoo.cfg文件。
在zookeeper/conf/zoo.cfg修改dataDir的目录，就是我们在第2步中创建的data目录。
在文件最后添加zookeeper集群节点地址。
server.1=localhost:2888:3888server.2=localhost:2889:3889server.3=localhost:2890:38905.其它节点配置。
好了，上面已经配置好了1个zookeeper服务，然后直接copy刚才配好的zookeeper目录两份。修改data/myid文件中的id，zoo.cfg的dataDir，clientPort。
6.然后分别启动zookeeper。
ZooKeeper伪集群环境搭建好了，不然让它静静地在那里跑着，继续捣鼓它。。。。。。
流过泪的眼睛更明亮，滴过血的心灵更坚强!
