zookeeper集群安装

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2017-03-27

zookeeper集群搭建

1.在一台机器上解压

tar -zxvf /opt/software/zookeeper-3.4.5-cdh5.3.6.tar.gz -C ./
cd zookeeper-3.4.5-cdh5.3.6

2.修改配置文件,并创建数据目录

cp conf/zoo_sample.cfg conf/zoo.cfg

mkdir -p data/zookeeper

vi conf/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=/opt/cdh/zookeeper-3.4.5-cdh5.3.6/data/zookeeper

# the port at which the clients will connect
clientPort=2181
#
# 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.1=centos1:2888:3888
server.2=centos2:2888:3888
server.3=centos3:2888:3888

3.在上面创建的/opt/cdh/zookeeper-3.4.5-cdh5.3.6/data/zookeeper目录下创建myid的文件,并填写内容1

touch myid
[mac@centos1 zookeeper]$ vi myid
[mac@centos1 zookeeper]$ pwd
/opt/cdh/zookeeper-3.4.5-cdh5.3.6/data/zookeeper

4.将配置好的zookeeper复制到另外两台机器上，centos2和centos3上

scp -r zookeeper-3.4.5-cdh5.3.6 centos2:/opt/cdh/
scp -r zookeeper-3.4.5-cdh5.3.6 centos3:/opt/cdh/

5.进入到centos2中的对应data/zookeeper目录下修改myid内容为2，centos3的myid内容为3
6.分别进入三台系统中启动zookeeper

./bin/zkServer.sh start
JMX enabled by default
Using config: /opt/cdh/zookeeper-3.4.5-cdh5.3.6/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

7.三台都启动成功后才能通过命令查看状态，没启动成功是无法查看状态的

centos1状态

./bin/zkServer.sh status
JMX enabled by default
Using config: /opt/cdh/zookeeper-3.4.5-cdh5.3.6/bin/../conf/zoo.cfg
Mode: follower

centos2状态

./bin/zkServer.sh status
JMX enabled by default
Using config: /opt/cdh/zookeeper-3.4.5-cdh5.3.6/bin/../conf/zoo.cfg
Mode: leader

centos3状态

./bin/zkServer.sh status
JMX enabled by default
Using config: /opt/cdh/zookeeper-3.4.5-cdh5.3.6/bin/../conf/zoo.cfg
Mode: follower

从角色中可以看出centos2目前是领导者状态，该领导者是集群通过选举策略选择后决定的

没启动完成的时候查看状态如下所示

./bin/zkServer.sh status
JMX enabled by default
Using config: /opt/cdh/zookeeper-3.4.5-cdh5.3.6/bin/../conf/zoo.cfg
Error contacting service. It is probably not running.

通过zkdash查看

通过连接访问服务http://localhost:8888

原创文章，转载请注明出处！
本文链接：https://codetosurvive1.github.io/posts/install-zookeeper-cluster.html

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