Zookeeper 最新版本集群搭建部署

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1，下载

下载地址：https://mirrors.tuna.tsinghua.edu.cn/apache/zookeeper/zookeeper-3.4.10/，目前最新稳定版本是3.4.10，我们可以直接wget下载这个（当然了也可以考虑稳定点的3.4.6）

wget https://mirrors.tuna.tsinghua.edu.cn/apache/zookeeper/zookeeper-3.4.10/zookeeper-3.4.10.tar.gz

2，文件夹配置

创建根目录：mkdir /zkcluster，下面依照端口创建3个文件夹

[root@xxx__121_71 zkcluster]# pwd

/zkcluster

[root@xxx__121_71 zkcluster]# ll

total 12

drwxr-xr-x. 2 root root 4096 Apr 13 21:43 zk3001

drwxr-xr-x. 2 root root 4096 Apr 13 21:43 zk3002

drwxr-xr-x. 2 root root 4096 Apr 13 21:43 zk3003

[root@xxx__121_71 zkcluster]#

Zk3001下面放zookeeper文件压缩包。

# 解压缩

[root@xxx__121_71 zkcluster]#tar -xvf zookeeper-3.4.10.tar.gz -C zk3001

[root@xxx__121_71 zkcluster]#tar -xvf zookeeper-3.4.10.tar.gz -C zk3002

[root@xxx__121_71 zkcluster]#tar -xvf zookeeper-3.4.10.tar.gz -C zk3003

# 查看解压缩目录，zk3001、zk3002、zk3003都是一模一样的，这里还需要再次做下mv，因为zk3001下面还有一个zookeeper3.4.10目录

[root@xxx__121_71 zkcluster]# mv zk3001/zookeeper-3.4.10/* zk3001

[root@xxx__121_71 zkcluster]# ll zk3001/zookeeper-3.4.10

total 0

[root@xxx__121_71 zkcluster]# rm -rf zk3001/zookeeper-3.4.10

[root@xxx__121_71 zkcluster]# ll zk3001

total 1592

drwxr-xr-x. 2 1001 1001 4096 Mar 23 19:27 bin

-rw-rw-r--. 1 1001 1001 84725 Mar 23 18:14 build.xml

drwxr-xr-x. 2 1001 1001 4096 Mar 23 19:27 conf

drwxr-xr-x. 10 1001 1001 4096 Mar 23 18:14 contrib

drwxr-xr-x. 2 1001 1001 4096 Mar 23 19:36 dist-maven

drwxr-xr-x. 6 1001 1001 4096 Mar 23 19:27 docs

-rw-rw-r--. 1 1001 1001 1709 Mar 23 18:14 ivysettings.xml

-rw-rw-r--. 1 1001 1001 5691 Mar 23 18:14 ivy.xml

drwxr-xr-x. 4 1001 1001 4096 Mar 23 19:27 lib

-rw-rw-r--. 1 1001 1001 11938 Mar 23 18:14 LICENSE.txt

-rw-rw-r--. 1 1001 1001 3132 Mar 23 18:14 NOTICE.txt

-rw-rw-r--. 1 1001 1001 1770 Mar 23 18:14 README_packaging.txt

-rw-rw-r--. 1 1001 1001 1585 Mar 23 18:14 README.txt

drwxr-xr-x. 5 1001 1001 4096 Mar 23 18:14 recipes

drwxr-xr-x. 8 1001 1001 4096 Mar 23 19:27 src

drwxr-xr-x. 2 1001 1001 4096 Apr 14 22:54 zookeeper-3.4.10

-rw-rw-r--. 1 1001 1001 1456729 Mar 23 19:24 zookeeper-3.4.10.jar

-rw-rw-r--. 1 1001 1001 819 Mar 23 19:28 zookeeper-3.4.10.jar.asc

-rw-rw-r--. 1 1001 1001 33 Mar 23 19:24 zookeeper-3.4.10.jar.md5

-rw-rw-r--. 1 1001 1001 41 Mar 23 19:24 zookeeper-3.4.10.jar.sha1

[root@xxx__121_71 zkcluster]# ll zk3001/zookeeper-3.4.10

total 0

[root@xxx__121_71 zkcluster]# rm -rf zk3001/zookeeper-3.4.10

[root@xxx__121_71 zkcluster]#

zk3002、zk3003依次做同样的操作。

3，配置zoo.cfg文件

已经解压缩了3个文件夹，现在有3个zookeeper文件包，意味着就是有3个zookeeper程序。

3.1 Zk3001配置

#（1）准备zoo.cfg文件

cd zk3001/conf/

cp zoo_sample.cfg zoo.cfg

mkdir -p /zkcluster/zk3001/data

mkdir -p /zkcluster/zk3001/logs

#（3）zoo.cfg的内容如下

[root@xxx__121_71 conf]# vim 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=/zkcluster/zk3001/data

dataDirLog=/zkcluster/zk3001/logs

# the port at which the clients will connect

clientPort=3001

# 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

server.1=192.168.121.71:2888:3888

server.2=192.168.121.71:2889:3889

server.3=192.168.121.71:2890:3890

PS：标识红色的部分就是修改的地方，指定zookeeper的data和log文件夹，指定clientport访问的端口和servers的列表。

3.2 zk3002配置

#（1）准备zoo.cfg文件

cd /zkcluster/zk3002/conf/

cp zoo_sample.cfg zoo.cfg

mkdir -p /zkcluster/zk3002/data

mkdir -p /zkcluster/zk3002/logs

#（3）zoo.cfg的内容如下

[root@xxx__121_71 conf]# vim 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=/zkcluster/zk3002/data

dataDirLog=/zkcluster/zk3002/logs

# the port at which the clients will connect

clientPort=3002

# 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

server.1=192.168.121.71:2888:3888

server.2=192.168.121.71:2889:3889

server.3=192.168.121.71:2890:3890

PS：标识红色的部分就是修改的地方，指定zookeeper的data和log文件夹，指定clientport访问的端口和servers的列表。

3.3 zk3003配置

#（1）准备zoo.cfg文件

cd /zkcluster/zk3003/conf/

cp zoo_sample.cfg zoo.cfg

mkdir -p /zkcluster/zk3003/data

mkdir -p /zkcluster/zk3003/logs

#（3）zoo.cfg的内容如下

[root@xxx__121_71 conf]# vim 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=/zkcluster/zk3003/data

dataDirLog=/zkcluster/zk3003/logs

# the port at which the clients will connect

clientPort=3003

# 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

server.1=192.168.121.71:2888:3888

server.2=192.168.121.71:2889:3889

server.3=192.168.121.71:2890:3890

PS：标识红色的部分就是修改的地方，指定zookeeper的data和log文件夹，指定clientport访问的端口和servers的列表。

4，生成pid文件

在/zkcluster zk3001/conf/zoo.cnf里面server列表有server.1/server.2/server.3这三个字符串，生成pid文件的内容就取决于此。

（1）Zk3001的pid文件

[root@xxx__121_71 zk3001]# cd /zkcluster/zk3001/data

[root@xxx__121_71 data]# vim myid

[root@xxx__121_71 data]# more myid

[root@xxx__121_71 data]#

（2）Zk3002的pid文件

[root@xxx__121_71 zk3001]# cd /zkcluster/zk3002/data

[root@xxx__121_71 data]# vim myid

[root@xxx__121_71 data]# more myid

[root@xxx__121_71 data]#

（3）Zk3002的pid文件

[root@xxx__121_71 zk3002]# cd /zkcluster/zk3003/data

[root@xxx__121_71 data]# vim myid

[root@xxx__121_71 data]# more myid

[root@xxx__121_71 data]#

5，启动zookeeper服务

（1）/zkcluster/zk3001/bin/zkServer.sh start-foreground &

（2）/zkcluster/zk3002/bin/zkServer.sh start-foreground &

（3）/zkcluster/zk3003/bin/zkServer.sh start-foreground &

6，查看zookeeper角色

（1）查看3001端口

[root@xxx__121_71 bin]# /zkcluster/zk3001/bin/zkServer.sh status

ZooKeeper JMX enabled by default

Using config: /zkcluster/zk3001/bin/../conf/zoo.cfg

2017-04-15 00:05:24,223 [myid:1] - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:3001:NIOServerCnxnFactory@192] - Accepted socket connection from /127.0.0.1:40468

2017-04-15 00:05:24,224 [myid:1] - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:3001:NIOServerCnxn@883] - Processing srvr command from /127.0.0.1:40468

2017-04-15 00:05:24,226 [myid:1] - INFO [Thread-2:NIOServerCnxn@1044] - Closed socket connection for client /127.0.0.1:40468 (no session established for client)

Mode: follower

（2）查看3002端口

[root@xxx__121_71 bin]# /zkcluster/zk3002/bin/zkServer.sh status

ZooKeeper JMX enabled by default

Using config: /zkcluster/zk3002/bin/../conf/zoo.cfg

2017-04-15 00:05:28,704 [myid:2] - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:3002:NIOServerCnxnFactory@192] - Accepted socket connection from /127.0.0.1:37557

2017-04-15 00:05:28,705 [myid:2] - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:3002:NIOServerCnxn@883] - Processing srvr command from /127.0.0.1:37557

2017-04-15 00:05:28,706 [myid:2] - INFO [Thread-4:NIOServerCnxn@1044] - Closed socket connection for client /127.0.0.1:37557 (no session established for client)

Mode: leader

# 这个leader是主角色也就是zookeeper的主服务。

（3）查看3003端口

[root@xxx__121_71 bin]# /zkcluster/zk3003/bin/zkServer.sh status

ZooKeeper JMX enabled by default

Using config: /zkcluster/zk3003/bin/../conf/zoo.cfg

2017-04-15 00:05:33,399 [myid:3] - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:3003:NIOServerCnxnFactory@192] - Accepted socket connection from /127.0.0.1:31395

2017-04-15 00:05:33,400 [myid:3] - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:3003:NIOServerCnxn@883] - Processing srvr command from /127.0.0.1:31395

2017-04-15 00:05:33,403 [myid:3] - INFO [Thread-2:NIOServerCnxn@1044] - Closed socket connection for client /127.0.0.1:31395 (no session established for client)

Mode: follower

[root@xxx__121_71 bin]#

参考文档下载地址

https://github.com/MyCATApache/Mycat-doc/blob/master/%E8%AE%BE%E8%AE%A1%E6%96%87%E6%A1%A3/2.0/Mycat%20ZK%E9%85%8D%E7%BD%AE%E6%96%87%E4%BB%B6%E8%AF%A6%E8%A7%A3.docx

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