zookeeper3.4.8安装和集群搭建

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1.环境准备

创建zookeeper用户.
准备安装包: zookeeper-3.4.8.tar.gz.
拷贝至安装目录并解压

tar zxvf zookeeper-3.3.6.tar.gz
mv zookeeper-3.3.6 zookeeper

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2.配置文件

• zookeeper/conf/zoo.cfg(需手动创建)

#zookeeper使用的基本时间单位(ms)
tickTime=2000

#leader和follow之间的最长心跳时间(ticktime的倍数)
initLimit=5

#leader和follower之间的消息交换的最长时间(ticktime的倍数)
syncLimit=2

#数据目录
dataDir=/home/zookeeper/zookeeper/data

#日志目录,该目录事先创建,否则无法启动
dataLogDir=/home/zookeeper/zookeeper/logs

#服务端口
clientPort=2181

#server0...分别对应集群中的各台,ip:数据交换端口:leader选举端口
server.0=192.168.163.101:8880:7770
server.1=192.168.163.102:8880:7770
server.2=192.168.163.103:8880:7770

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• zookeeper/data/myid(需手动创建)

#唯一标识
0

拷贝至其他节点,此文件对应修改.

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• .bashrc

export ZOOKEEPER_HOME=/home/zookeeper/zookeeper
export PATH=$ZOOKEEPER_HOME/bin:$ZOOKEEPER_HOME/conf:$PATH

source .bashrc

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3.启动

各节分别执行启动

zkServer.sh start

注意: 启动第一个节点时,由于其他两个节点未启动,所以会报错,不用管.

java.net.ConnectException: 拒绝连接
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.net.Socket.connect(Socket.java:579)
        at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManager.java:381)
        at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectAll(QuorumCnxManager.java:426)
        at org.apache.zookeeper.server.quorum.FastLeaderElection.lookForLeader(FastLeaderElection.java:843)
        at org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:822)
2018-05-16 19:40:26,103 [myid:0] - INFO  [QuorumPeer[myid=0]/0:0:0:0:0:0:0:0:2181:QuorumPeer$QuorumServer@149] - Resolved hostname: 192.168.163.103 to address: /192.168.163.103
2018-05-16 19:40:26,104 [myid:0] - WARN  [QuorumPeer[myid=0]/0:0:0:0:0:0:0:0:2181:QuorumCnxManager@400] - Cannot open channel to 1 at election address /192.168.163.102:7770

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4.测试

• jps查看进程

QuorumPeerMain

• 查看节点状态

./zkServer.sh status

• 启动客户端

./zkCli.sh -server localhost:2181

• 创建节点

create /zk 'test'
get /zk
quit