linux下zookeeper集群部署以及测试

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]