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前言

本文以zookeeper为注册中心,所以使用前先安装zookeeper,并在本机启动一个伪分布式集群

搭建准备

  1. 获得zookeeper包

    http://mirror.bit.edu.cn/apache/zookeeper/zookeeper-3.4.14/zookeeper-3.4.14.tar.gz

  2. 解压

    tar zxvf zookeeper-3.4.14.tar.gz mv ./zookeeper-3.4.14 /usr/local

  3. 下面的操作需要root权限,当遇到访问限制时使用sudo

开始搭建

  1. 修改 zoo.cfg

    cd /usr/local/zookeeper-3.4.14/conf mv zoo_sample.cfg zoo.cfg vim zoo.cfg

# 心跳间隔
tickTime=2000
# 初始容忍的心跳数
initLimit=10
# 等待最大容忍的心跳数
syncLimit=5
# 本地数据保存目录
dataDir=/usr/local/zookeeper-3.4.14/zkData
# 客户端默认端口号
clientPort=2181

server.1=127.0.0.1:2888:3888
server.2=127.0.0.1:2889:3889
server.3=127.0.0.1:2890:3890
  1. 配置数据目录

    可以看到我们配置了dataDir,所以需要设置目录 cd /usr/local/zookeeper-3.4.14 mkdir zkData vim myid // 输入1

  2. 启动

    cd /usr/local/zookeeper-3.4.14/bin ./zkServer.sh start

  3. 同理开始搭建第二个服务

    cd /usr/local cp -rf zookeeper-3.4.14/ zookeeper01 cd zookeeper01/conf vim zoo.cfg

# 本地数据保存目录
dataDir=/usr/local/zookeeper01/zkData
# 客户端默认端口号
clientPort=2182
  1. 启动第二个服务

    cd /usr/local/zookeeper01/zkData vim myid // 改为2 cd .. vim myid // 改为2 cd /bin ./zkServer.sh start

  2. 同理开始搭建第三个服务

    cd /usr/local cp -rf zookeeper-3.4.14/ zookeeper02 cd zookeeper02/conf vim zoo.cfg

# 本地数据保存目录
dataDir=/usr/local/zookeeper02/zkData
# 客户端默认端口号
clientPort=2183
  1. 启动第三那个服务

    cd /usr/local/zookeeper02/zkData vim myid // 改为3 cd .. vim myid // 改为3 cd /bin ./zkServer.sh start

  2. 使用bin目录下的 zkServer.sh 查看三个服务的状态值

    ./zkServer.sh staus 当三个服务的状态值都为Mode: follower , Mode: follower, Mode: leader 时则启动完毕,开始测试

服务测试

  1. 登录一个客户端,并创建一个节点数据

    cd /usr/local/zookeeper-3.4.14/bin ./zkCli.sh -server localhost:2181

[zk: localhost:2181(CONNECTED) 0] ls /
[zookeeper, testNode]
[zk: localhost:2181(CONNECTED) 1] get /testNode
nodeTxt
cZxid = 0x200000002
ctime = Thu May 23 15:29:51 CST 2019
mZxid = 0x200000002
mtime = Thu May 23 15:29:51 CST 2019
pZxid = 0x200000002
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 7
numChildren = 0
  1. 登录第二个客户端,查看是否有同步节点

    cd /usr/local/zookeeper01/bin ./zkCli.sh -server localhost:2182

[zk: localhost:2183(CONNECTED) 0] ls /
[zookeeper, testNode]
[zk: localhost:2183(CONNECTED) 1] get /testNode
nodeTxt
cZxid = 0x200000002
ctime = Thu May 23 15:29:51 CST 2019
mZxid = 0x200000002
mtime = Thu May 23 15:29:51 CST 2019
pZxid = 0x200000002
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 7
numChildren = 0
  1. 结束测试(第三个就不重复了)具体代码在分支( shenzk )

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