zookeeper 学习 zookeeper下载部署

下载

http://mirror.bit.edu.cn/apache/zookeeper/

校验

解压后得到zookeeper-3.4.10.jar，使用md5sum zookeeper-3.4.10.jar 得到

450dbad05d829607bc45b9ccad789890  zookeeper-3.4.10.jar

与zookeeper-3.4.10.jar.md5中的内容比较

集群部署,我搞了三台虚拟机,每台2G内存,IP分别为192.168.56.101/104/103 以server0为例

zookeeper@wangx-VirtualBox:~/server0/zookeeper/conf$ cp zoo_sample.cfg zoo.cfg

新建data文件夹

zookeeper@wangx-VirtualBox:~/server0/zookeeper$ mkdir data

zookeeper@wangx-VirtualBox:~/server0/zookeeper$ mkdir logs

新建myid文件，里面写入该server的序号

zookeeper@wangx-VirtualBox:~/server0/zookeeper/data$ echo "0" >myid

server0 该文件内容为

# 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=/home/zookeeper/zookeeper-3.4.10/dataDir
# the port at which the clients will connect
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
server.0=192.168.56.101:2888:3888
server.1=192.168.56.104:2888:3888
server.2=192.168.56.103:2888:3888

进入server0/zookeeper/bin ，开始启动

zkServer.sh start

查看运行状态，通常都是失败

然后命令行开启两个client

./zkCli.sh -server 192.168.56.104:2181

./zkCli.sh -server 192.168.56.101:2181

然后在第一个客户端里创建一个节点, 然后在第二个客户端里就能看到这个节点了,说明集群搭建成功