linux下zookeeper集群部署以及测试

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1. 下载

• 3.4.12

• 或者去这里现在你需要的版本

  root@debian:~/soft/bk# wget http://mirrors.hust.edu.cn/apache/zookeeper/stable/zookeeper-3.4.12.tar.gz
  

2. 安装和配置

限于测试环境，只在单机上部署3个实例，生产环境需要所有实例分散在不同的机器上

• 解压缩

  # 解压缩
  root@debian:~/soft/bk# tar zxvf zookeeper-3.4.12.tar.gz
  root@debian:~/soft/bk# cd zookeeper-3.4.12/
  # 删除一些不要的文件，最后只留下面这些文件
  root@debian:~/soft/bk/zookeeper-3.4.12# ls -l
  total 1464
  drwxr-xr-x 2 psy psy    4096 Mar 27 12:32 bin
  drwxr-xr-x 2 psy psy    4096 Mar 27 12:32 conf
  drwxr-xr-x 4 psy psy    4096 Mar 27 12:32 lib
  -rw-rw-r-- 1 psy psy 1483366 Mar 27 12:32 zookeeper-3.4.12.jar  
  

• 创建配置文件

  root@debian:~/soft/bk/zookeeper-3.4.12# cd conf/
  root@debian:~/soft/bk/zookeeper-3.4.12/conf# ls
  configuration.xsl  log4j.properties  zoo_sample.cfg
  root@debian:~/soft/bk/zookeeper-3.4.12/conf# cp zoo_sample.cfg zoo.cfg
  root@debian:~/soft/bk/zookeeper-3.4.12/conf# vim zoo.cfg
  

  修改配置文件zoo.cfg的内容

  # 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=/data/zookeeper/data/z1
  # the port at which the clients will connect
  clientPort=2281
  server.1=localhost:2888:3888
  server.2=localhost:2889:3889
  server.3=localhost:2890:3890
  # 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.
  #
  # 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
  

• 安装

  root@debian:~/soft/bk# mkdir -p /usr/local/zookeeper_cluster
  root@debian:~/soft/bk# cp -r zookeeper-3.4.12 /usr/local/zookeeper_cluster/z1
  root@debian:~/soft/bk# cp -r zookeeper-3.4.12 /usr/local/zookeeper_cluster/z2
  root@debian:~/soft/bk# cp -r zookeeper-3.4.12 /usr/local/zookeeper_cluster/z3
  

  z1, z2, z3 分别是三个实例

  • 修改z2/conf/zoo.cfg, 修改dataDir和clientPort项

    dataDir=/data/zookeeper/data/z2
    # the port at which the clients will connect
    clientPort=2282
    

  • 修改z3/conf/zoo.cfg, 修改dataDir和clientPort项

    dataDir=/data/zookeeper/data/z3
    # the port at which the clients will connect
    clientPort=2283
    

• 创建数据存储目录

  root@debian:~/soft/bk/zookeeper-3.4.12# mkdir -p /data/zookeeper/data
  root@debian:~/soft/bk/zookeeper-3.4.12# cd /data/zookeeper/data/
  root@debian:/data/zookeeper/data# mkdir z1 z2 z3
  

• 创建myid, id与zoo.cfg中server.X的x对应

  root@debian:/data/zookeeper/data# echo 1 > z1/myid
  root@debian:/data/zookeeper/data# echo 2 > z2/myid
  root@debian:/data/zookeeper/data# echo 3 > z3/myid
  

3. 启动和测试

• 创建一个启动三个实例的sh, start.sh

  ./z1/bin/zkServer.sh start &
  ./z2/bin/zkServer.sh start &
  ./z3/bin/zkServer.sh start &
  

• 测试

  root@debian:/usr/local/zookeeper_cluster/z1/bin# ./zkCli.sh -server 127.0.0.1:2281
  

  一些操作命令

  [zk: 127.0.0.1:2281(CONNECTED) 2] create /zk_test hello
  Created /zk_test
  [zk: 127.0.0.1:2281(CONNECTED) 3] get /zk_test
  hello
  cZxid = 0x100000003
  ctime = Wed Sep 19 18:04:00 CST 2018
  mZxid = 0x100000003
  mtime = Wed Sep 19 18:04:00 CST 2018
  pZxid = 0x100000003
  cversion = 0
  dataVersion = 0
  aclVersion = 0
  ephemeralOwner = 0x0
  dataLength = 5
  numChildren = 0
  [zk: 127.0.0.1:2281(CONNECTED) 4] set /zk_test fuck
  cZxid = 0x100000007
  ctime = Wed Sep 19 18:09:32 CST 2018
  mZxid = 0x100000008
  mtime = Wed Sep 19 18:09:40 CST 2018
  pZxid = 0x100000007
  cversion = 0
  dataVersion = 1
  aclVersion = 0
  ephemeralOwner = 0x0
  dataLength = 4
  numChildren = 0
  [zk: 127.0.0.1:2281(CONNECTED) 5] get /zk_test
  fuck
  cZxid = 0x100000007
  ctime = Wed Sep 19 18:09:32 CST 2018
  mZxid = 0x100000008
  mtime = Wed Sep 19 18:09:40 CST 2018
  pZxid = 0x100000007
  cversion = 0
  dataVersion = 1
  aclVersion = 0
  ephemeralOwner = 0x0
  dataLength = 4
  numChildren = 0
  [zk: 127.0.0.1:2281(CONNECTED) 6] delete /zk_test
  [zk: 127.0.0.1:2281(CONNECTED) 7] ls /
  [zookeeper]
  [zk: 127.0.0.1:2281(CONNECTED) 8]