centos7 install zookeeper3.4.10

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一.下载

1.wget http://apache.fayea.com/zookeeper/zookeeper-3.4.10/zookeeper-3.4.10.tar.gz

2. tar -zxvf zookeeper-3.4.10.tar.gz

二.配置

1.cd zookeeper-3.4.10/conf/

2.复制 zoo_sample.cfg 文件的并命名为为 zoo.cfg：
cp zoo_sample.cfg zoo.cfg

3.用 vim 打开 zoo.cfg 文件并修改其内容为如下：
# The number of milliseconds of each tick

# zookeeper 定义的基准时间间隔，单位：毫秒
tickTime=2000
时长单位为毫秒，为zk使用的基本时间度量单位。例如，1 * tickTime是客户端与zk服务端的心跳时间，2 * tickTime是客户端会话的超时时间。
tickTime的默认值为2000毫秒，更低的tickTime值可以更快地发现超时问题，但也会导致更高的网络流量（心跳消息）和更高的CPU使用率（会话的跟踪处理）。

# 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/zookeeper

# 数据文件夹
dataDir=/usr/local/services/zookeeper/zookeeper-3.4.10/data

# 日志文件夹
dataLogDir=/usr/local/services/zookeeper/zookeeper-3.4.10/logs

# the port at which the clients will connect
# 客户端访问 zookeeper 的端口号
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.
#
#
# 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.1=192.168.80.128:2888:3888

4.用 vim 打开 /etc/ 目录下的配置文件 profile：
vim /etc/profile
并在其尾部追加如下内容：

# idea - zookeeper-3.4.10 config start

export ZOOKEEPER_HOME=/usr/local/services/zookeeper/zookeeper-3.4.10/

export PATH= PATH=$HADOOP_HOME/bin:$ZOOKEEPER_HOME/bin:$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH

11、使 /etc/ 目录下的 profile 文件即可生效：
source /etc/profile

三.启动

1.进入到 /usr/local/services/zookeeper/zookeeper-3.4.10/bin 目录中：
cd ../bin/

2.sh zkServer.sh start

3.进入bin目录，执行sh zkServer.sh status

4.关闭进入bin目录，执行sh zkServer.sh stop

四.telnet 连接

telnet 192.168.80.128 2128

stat

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