echo “1” > /usr/local/zookeeper/data/myid
#在192.168.xx.129服务器上面创建myid文件，并设置值为1，同时与zoo.cfg文件里面的server.2保持一致，如下
echo “2” > /usr/local/zookeeper/data/myid
#在192.168.xx.130服务器上面创建myid文件，并设置值为1，同时与zoo.cfg文件里面的server.3保持一致，如下
echo “3” > /usr/local/zookeeper/data/myid
到此 配置结束
然后 同时进入 /usr/zookeeper-3.3.6/bin/ 目录下 启动 ./zkServer.sh start
JMX enabled by default Using config: /usr/zookeeper-3.3.6/bin/../conf/zoo.cfg Starting zookeeper ... STARTED [root@node0 zookeeper-3.4.6]$ ./bin/**zkServer.sh status** JMX enabled by default Using config: /usr/zookeeper-3.6.6/bin/../conf/zoo.cfg Error contacting service. It is probably not running.zkServer.sh status
JMX enabled by default
Using config: /usr/zookeeper-3.6.6/bin/…/conf/zoo.cfg
Error contacting service. It is probably not running.
start 正常，但是查看状态时，出现如下错误：
Error contacting service. It is probably not running.
停掉ZK,然后以start-foreground方式启动,查看启动日志：
即：zkServer.sh start-foreground ，又出现如下错误：
-
java.net.BindException: 地址已在使用
-
at sun.nio.ch.Net.bind0(Native Method)
-
at sun.nio.ch.Net.bind(Net.java:463)
-
at sun.nio.ch.Net.bind(Net.java:455)
-
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
-
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
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at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:67)
-
at org.apache.zookeeper.server.NIOServerCnxnFactory.configure(NIOServerCnxnFactory.java:90)
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at org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:130)
-
at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:111)
-
at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:78)
从错误信息来看，是
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端口被使用了，但我用netstat -lntup是没被使用的，再用 lsof -i:2181，发现了2181端口果然被占用了
[root@ programfiles]# lsof -i:2181
是java的一个进程 占用了端口（这里忘了截图了）。
再次修改 conf/zoo.cfg 将端口号 2181 修改为 21810，重新启动
java.net.NoRouteToHostException: 没有到主机的路由
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:712)
at sun.nio.ch.SocketAdaptor.connect(SocketAdaptor.java:111)
at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManager.java:371)
at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectAll(QuorumCnxManager.java:404)
at org.apache.zookeeper.server.quorum.FastLeaderElection.lookForLeader(FastLeaderElection.java:688)
at org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:622)
又出现了如下错误，真是一部一个坑。
检查了一下防火墙的状态，将其关闭：
centos7.0(默认是使用firewall作为防火墙，如若未改为iptables防火墙，使用以下命令查看和关闭防火墙)
查看防火墙状态：firewall-cmd --state
关闭防火墙：systemctl stop firewalld.service
重新启动：
zkServer.sh start-foreground
java.net.ConnectException: 拒绝连接
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:712)
at sun.nio.ch.SocketAdaptor.connect(SocketAdaptor.java:111)
at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManager.java:371)
at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectAll(QuorumCnxManager.java:404)
at org.apache.zookeeper.server.quorum.FastLeaderElection.lookForLeader(FastLeaderElection.java:688)
at org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:622)
竟然还有错误？！！百度到一片文章，后说需要修改 /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
将第一行注释掉，再次启动：
zkServer.sh start
启动成功！查看一下 状态
zkServer.sh status
[root@localhost bin]# ./zkServer.sh status JMX enabled by default Using config: /usr/zookeeper-3.3.6/bin/../conf/zoo.cfg Mode: followerfollower
[root@localhost bin]# ./zkServer.sh status JMX enabled by default Using config: /usr/zookeeper-3.3.6/bin/../conf/zoo.cfg Mode: leaderleader
[root@localhost bin]# ./zkServer.sh status JMX enabled by default Using config: /usr/zookeeper-3.3.6/bin/../conf/zoo.cfg Mode: followerfollower
至此，zookeeper集群搭建完毕，感觉所有的坑全踩了一遍。对于一个刚刚接触linux 不久的菜鸟来说真的很残忍。希望能够帮到大家！
问题最后解决看的是这篇文章，http://blog.csdn.net/pein_zero/article/details/51855244
