zookeeper的安装

安装zookeeper

访问http://zookeeper.apache.org/，点击Download，点击download，然后选择一个下载链接http://mirror.bit.edu.cn/apache/zookeeper/ 这个是北京理工大学的开源软件镜像服务，离着比较近。

我下载的是zookeeper-3.4.6.tar.gz

这个也是Java开发的，装这个之前要先安装JDK。

然后我把zookeeper-3.4.6.tar.gz上传到/usr/local目录下，并解压

进入zookeeper-3.4.6目录，创建data文件夹。

进入到zookeeper-3.4.6/conf中把zoo_sample.cfg改名为zoo.cfg

然后把zoo.cfg里边的dataDir改成

dataDir=/usr/local/zookeeper-3.4.6/data

# 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=/usr/local/zookeeper-3.4.6/data
# 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

注意这里有个2181端口号。需要在防火墙上配置一下，暴露这个端口号。或者把防火墙关了。

然后进入到zookeeper-3.4.6/bin

执行命令来启动

./zkServer.sh start

关闭

./zkServer.sh stop

查看状态

./zkServer.sh status

如果不能成功启动zookeeper，删除data目录下的zookeeper_server.pid文件。