Zookeeper学习（一、Linux搭建zookeeper）

1.zookeeper单机搭建

• 下载：wget http://mirrors.shu.edu.cn/apache/zookeeper/stable/zookeeper-3.4.12.tar.gz
• 解压：tar -zxvf zookeeper-3.4.12.tar.gz
• 配置文件：在conf目录下删除zoo_sample.cfg文件，创建一个配置文件zoo.cfg

tickTime=2000
dataDir=/usr/local/services/zookeeper/zk/data
dataLogDir=/usr/local/services/zookeeper/zk/dataLog        
clientPort=2181

•  配置环境变量：在/etc/profile文件中加入如下内容：

export ZOOKEEPER_HOME=/usr/local/services/zookeeper/zk
export PATH=.:$HADOOP_HOME/bin:$ZOOKEEPER_HOME/bin:$JAVA_HOME/bin:$PATH

• 启动：启动：zkServer.sh start；关闭：zkServer.sh stop

2.zookeeper单机伪集群搭建 

在zk目录下新建data_1，data_2，data_3目录，分别新建myid文件，并分别写入1,2,3

在conf目录下新建zoo1.cfg,zoo2.cfg,zoo3.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.
dataDir=/usr/local/services/zookeeper/zk/data_1

# the port at which the clients will connect
clientPort=2181

#the location of the log file
dataLogDir=/usr/local/services/zookeeper/zk/logs_1

server.1=localhost:2287:3387
server.2=localhost:2288:3388
server.3=localhost:2289:3389

# 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.
dataDir=/usr/local/services/zookeeper/zk/data_2

# the port at which the clients will connect
clientPort=2182

#the location of the log file
dataLogDir=/usr/local/services/zookeeper/zk/logs_2

server.1=localhost:2287:3387
server.2=localhost:2288:3388
server.3=localhost:2289:3389

# 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.
dataDir=/usr/local/services/zookeeper/zk/data_3

# the port at which the clients will connect
clientPort=2183

#the location of the log file
dataLogDir=/usr/local/services/zookeeper/zk/logs_3

server.1=localhost:2287:3387
server.2=localhost:2288:3388
server.3=localhost:2289:3389

依次启动三个服务：

查看状态：