zookeeper 分布式安装/配置/启动

版本3.4.10,已提前配置好jdk

三台主机:hadoop002,hadoop003.hadoop004

1.配置

将zookeeper-3.4.10.tar.gz解压后进入zookeeper-3.4.10/conf,将zoo_sample.cfg改名为zoo.cfg,编辑zoo.cfg

tickTime   心跳间隔

dataDir     zk存储数据的路径,默认在/tmp

2888端口用于集群间的通信,3888是集群中的leader崩溃后用于重新选举leader的端口

 # The number of milliseconds of each tick
 tickTime=
 # The number of ticks that the initial
 # synchronization phase can take
 initLimit=
 # The number of ticks that can pass between
 # sending a request and getting an acknowledgement
 syncLimit=
 # the directory where the snapshot is stored.
 # do not use /tmp for storage, /tmp here is just
 # example sakes.
 dataDir=/opt/module/zookeeper-3.4./zkData
 # the port at which the clients will connect
 clientPort=
 # the maximum number of client connections.
 # increase this if you need to handle more clients
 #maxClientCnxns=

 #######################cluster(根据各人主机名配置)##########################
 server.=hadoop002::
 server.=hadoop003::
 server.=hadoop004::

 #
 # 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=
 # Purge task interval in hours
 # Set to "" to disable auto purge feature
 #autopurge.purgeInterval=

由于在zoo.cfg中我们指定了dataDir,现在需要创建dataDir的路径,因此在zookeeper-3.4.10下创建zkData文件夹.接下来在zkData目录下创建名为myid的文件,该文件用于唯一标识zk集群中的一台机器(用于选举),编辑myid,写入的内容最后与本主机名对应,如hadoop002.在myid中就写2

接下来分发zookeeper-3.4.10文件夹到各台主机上,分发完成后,注意修改各台主机myid的值

2.启动

在hadoop002上进入zookeeper-3.4.10,执行以下命令启动zk集群

bin/zkServer.sh start

可以看到进程已经起来了.查看下状态发现并没有启动成功

没关系我们接着去hadoop003上启动zk

可以看到hadoop003上zk成功启动了,再次去hadoop002上查看状态

成功启动了,这说明分布式下的zk集群,如果leader没有启动,follower无法成功启动,接下来你可以接着去hadoop004上启动zk

关于客户端的启动执行bin/zkCli.sh即可