https://mirrors.tuna.tsinghua.edu.cn/apache/zookeeper/
[root@znode01 src]# tar -xzvf zookeeper-3.5.2-alpha.tar.gz [root@znode01 src]# ls zookeeper-3.5.2-alpha zookeeper-3.5.2-alpha.tar.gz
[root@znode01 zookeeper-3.5.2-alpha]# ls bin ivysettings.xml recipes build.xml ivy.xml src CHANGES.txt lib zookeeper-3.5.2-alpha.jar conf LICENSE.txt zookeeper-3.5.2-alpha.jar.asc contrib NOTICE.txt zookeeper-3.5.2-alpha.jar.md5 dist-maven README_packaging.txt zookeeper-3.5.2-alpha.jar.sha1 docs README.txt
[root@znode01 zookeeper-3.5.2-alpha]# cd conf/ [root@znode01 conf]# ls configuration.xsl log4j.properties zoo_sample.cfg [root@znode01 conf]# mv zoo_sample.cfg zoo.cfg [root@znode01 conf]# ls configuration.xsl log4j.properties zoo.cfg
修改配置文件:
[root@znode01 conf]# cat zoo.cfg # The number of milliseconds of each tick tickTime=2000 #Zookeeper服务器之间或客户端与服务器之间维持心跳的时间间隔，也就是每个tickTime时间就会发送一个心跳。tickTime以毫秒为单位。 # The number of ticks that the initial # synchronization phase can take initLimit=10 #集群中的follower服务器与leader之间初始连接时能容忍的最多心跳数(ticTime的数量) # The number of ticks that can pass between # sending a request and getting an acknowledgement syncLimit=5 #集群中的follower服务器与leader服务器之间请求和应答之间能容忍的最多必跳数(tickTime的数量) # the directory where the snapshot is stored. # do not use /tmp for storage, /tmp here is just # example sakes. dataDir=/tmp/zookeeper #Zookeeper保存数据的目录，默认情况下，Zookeeper将写数据的日志文件也何存在这个目录里。 # the port at which the clients will connect clientPort=2181 #客户端连接Zookeeper服务器的端口,Zookeeper会监听这个端口，接受客户端的访问请求。 # 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 #服务器名称与地址:集群信息(服务器编号，服务器地址，LF通信端口，选举端口) #server.N=YYY:A:B server.1=192.168.1.104:2888:3888 server.2=192.168.1.103:2888:3888 server.3=192.168.1.108:2888:3888
zk设置为奇数：
zookeeper有这样一个特性：集群中只要有过半的机器是正常工作的，那么整个集群对外就是可用的。也就是说如果有２个zookeeper，那么只要有１个死了zookeeper就不能用了，因为１没有过半，所以２个zookeeper的死亡容忍度为０；同理，要是有３个zookeeper,一个死了，还剩下２个正常的，过半了，所以３个zookeeper的容忍度为１；同理你多列举几个：2-->0;3-->1;4-->1;5-->2;6-->2会发现一个规律,2n和2n-1的容忍度是一样的，都是n-1,所以为了更加高效，何必增加那个不必要的zookeeper!!!!!
[root@znode01 conf]# mkdir /tmp/zookeeper [root@znode01 conf]# touch /tmp/zookeeper/myid;echo 1> /tmp/zookeeper/myid #创建一个myid文件，里面的内容是server.N中的N(server.2里面的内容为2)
将配好的zookeeper发到别外的两个节点上：
[root@znode01 local]# scp -r -P22022 zookeeper-3.5.2-alpha 192.168.1.108:/usr/local/ [root@znode01 local]# scp -r -P22022 zookeeper-3.5.2-alpha 192.168.1.10３:/usr/local/
注意其它的节点的myid内容分别人2,3。查看个个结点的myid
[root@znode01 zookeeper-3.5.2-alpha]# cat /tmp/zookeeper/myid 1 [root@znode02 zookeeper-3.5.2-alpha]# cat /tmp/zookeeper/myid 2 [root@znode03 zookeeper-3.5.2-alpha]# cat /tmp/zookeeper/myid 3
启动zookeeper:
[root@znode01 bin]# ./zkServer.sh start /usr/bin/java ZooKeeper JMX enabled by default Using config: /usr/local/zookeeper-3.5.2-alpha/bin/../conf/zoo.cfg Starting zookeeper ... STARTED [root@znode02 zookeeper-3.5.2-alpha]# ./bin/zkServer.sh start /usr/bin/java ZooKeeper JMX enabled by default Using config: /usr/local/zookeeper-3.5.2-alpha/bin/../conf/zoo.cfg Starting zookeeper ... STARTED [root@znode03 zookeeper-3.5.2-alpha]# ./bin/zkServer.sh start /usr/bin/java ZooKeeper JMX enabled by default Using config: /usr/local/zookeeper-3.5.2-alpha/bin/../conf/zoo.cfg Starting zookeeper ... STARTED
之前的zoo.cnf做一下小的修改如下：
[root@znode01 zookeeper-3.5.2-alpha]# cat conf/zoo.cfg # The number of milliseconds of each tick #Zookeeper服务器之间或客户端与服务器之间维持心跳的时间间隔，也就是每个tickTime时间就会发送一个心跳。tickTime以毫秒为单位。 tickTime=2000 # The number of ticks that the initial # synchronization phase can take #集群中的follower服务器与leader之间初始连接时能容忍的最多心跳数(ticTime的数量) initLimit=10 # The number of ticks that can pass between # sending a request and getting an acknowledgement #集群中的follower服务器与leader服务器之间请求和应答之间能容忍的最多必跳数(tickTime的数量) syncLimit=5 # the directory where the snapshot is stored. # do not use /tmp for storage, /tmp here is just # example sakes. #Zookeeper保存数据的目录，默认情况下，Zookeeper将写数据的日志文件也何存在这个目录里。 dataDir=/tmp/zookeeper # the port at which the clients will connect #客户端连接Zookeeper服务器的端口,Zookeeper会监听这个端口，接受客户端的访问请求。 clientPort=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 #服务器名称与地址:集群信息(服务器编号，服务器地址，LF通信端口，选举端口) #server.N=YYY:A:B server.1=192.168.1.104:2888:3888 server.2=192.168.1.103:2888:3888 server.3=192.168.1.108:2888:3888
下面看一下三个结点的过行情况：
[root@znode01 zookeeper-3.5.2-alpha]# ./bin/zkServer.sh status /usr/bin/java ZooKeeper JMX enabled by default Using config: /usr/local/zookeeper-3.5.2-alpha/bin/../conf/zoo.cfg Client port found: 2181. Client address: localhost. Mode: follower [root@znode02 zookeeper-3.5.2-alpha]# ./bin/zkServer.sh status /usr/bin/java ZooKeeper JMX enabled by default Using config: /usr/local/zookeeper-3.5.2-alpha/bin/../conf/zoo.cfg Client port found: 2181. Client address: localhost. Mode: leader [root@znode03 zookeeper-3.5.2-alpha]# ./bin/zkServer.sh status /usr/bin/java ZooKeeper JMX enabled by default Using config: /usr/local/zookeeper-3.5.2-alpha/bin/../conf/zoo.cfg Client port found: 2181. Client address: localhost. Mode: follower
这里要注意防火墙是不是把相应的端口打开！！！！