zookeeper 集群配置

以下是zookeeper在一台虚拟机上的伪集群配置：(zoo.cfg配置文件)

[root@localhost conf]# more zoo.cfg
# The number of milliseconds of each tick
tickTime=2000
# The number of ticks that the initial 
# synchronization phase can take
initLimit=10
# The number of ticks that can pass between 
# sending a request and getting an acknowledgement
syncLimit=5
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just 
# example sakes.
dataDir=/tmp/zookeeper4           #某个zookeeper集群数据文件的目录，如果该zookeeper节点在最先面cluster的配置为server.4，则需要在该目录下创建一个myid文件，里面                                                            #的值为4,当然每个zookeeper节点都必须要在myid文件中写入对应的id
# the port at which the clients will connect
clientPort=2184       #既然是在同一台机器上就需要配置集群的几个zookeeper实例不要共用同一个端口
# 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


#cluster
server.1=localhost:2886:3886       #这是具体的几个zookeeper节点集群的通信配置
server.2=localhost:2887:3887
server.3=localhost:2888:3888
server.4=localhost:2889:3889

至此，上述四个zookeeper节点集群配置完成,通过zookeeper自带的客户端（位于{Zookeeper_HOme}/bin/zkCli.sh）,例如：./bin/zkCli.sh -server 127.0.0.1:2184连接相应的zookeeper服务器，

用  create /zk_test

则集群环境中的所有zookeeper节点在客户端连入之后都能同过命令： ls  /   看到在之前的zookeeper节点下创建的  /zk_test 节点