& ZooKeeper伪分布式集群安装及使用
ZooKeeper伪分布式集群安装及使用
，介绍了如何整合虚拟化和Hadoop，让Hadoop集群跑在VPS虚拟主机上，通过云向用户提供存储和计算的服务。
现在硬件越来越便宜，一台非品牌服务器，2颗24核CPU，配48G内存，2T的硬盘，已经降到2万块人民币以下了。这种配置如果简单地放几个web应用，显然是奢侈的浪费。就算是用来实现单节点的hadoop，对计算资源浪费也是非常高的。对于这么高性能的计算机，如何有效利用计算资源，就成为成本控制的一项重要议题了。
通过虚拟化技术，我们可以将一台服务器，拆分成12台VPS，每台2核CPU，4G内存，40G硬盘，并且支持资源重新分配。多么伟大的技术啊！现在我们有了12个节点的hadoop集群， 让Hadoop跑在云端，让世界加速。
关于作者：
张丹(Conan), 程序员Java,R,PHP,Javascript
weibo：@Conan_Z
转载请注明出处：
ZooKeeper是Hadoop家族的一款高性能的分布式协作的产品。在单机中，系统协作大都是进程级的操作。分布式系统中，服务协作都是跨服务器才能完成的。在ZooKeeper之前，我们对于协作服务大都使用消息中间件，随着分布式系统的普及，用消息中间件完成协作，会有大量的程序开发。ZooKeeper直接面向于分布式系统，可以减少我们自己的开发，帮助我们更好完成分布式系统的数据管理问题。
zookeeper介绍
zookeeper单节点安装
zookeeper伪分布式集群安装
zookeeper命令行操作
Java编程现实命令行操作
1. zookeeper介绍
ZooKeeper是一个为分布式应用所设计的分布的、开源的协调服务，它主要是用来解决分布式应用中经常遇到的一些数据管理问题，简化分布式应用协调及其管理的难度，提供高性能的分布式服务。ZooKeeper本身可以以Standalone模式安装运行，不过它的长处在于通过分布式ZooKeeper集群（一个Leader，多个Follower），基于一定的策略来保证ZooKeeper集群的稳定性和可用性，从而实现分布式应用的可靠性。
ZooKeeper是作为分布式协调服务，是不需要依赖于Hadoop的环境，也可以为其他的分布式环境提供服务。
2. zookeeper单节点安装Standalones模式
系统环境：
Linux Ubuntu 12.04.2 LTS 64bit server
Java: 1.6.0_29 64-Bit Server VM
~ uname -a
Linux conan 3.5.0-23-generic #35~precise1-Ubuntu SMP Fri Jan 25 17:13:26 UTC
x86_64 x86_64 GNU/Linux
~ cat /etc/issue
Ubuntu 12.04.2 LTS \n \l
~ java -version
java version "1.6.0_29"
Java(TM) SE Runtime Environment (build 1.6.0_29-b11)
Java HotSpot(TM) 64-Bit Server VM (build 20.4-b02, mixed mode)
下载zookeeper
~ mkdir /home/conan/toolkit
~ cd /home/conan/toolkit
~ wget /zookeeper/stable/zookeeper-3.4.5.tar.gz
~ tar xvf zookeeper-3.4.5.tar.gz
~ mv zookeeper-3.4.5 zookeeper345
~ cd zookeeper345
drwxr-xr-x
2 conan conan
4096 Aug 12 04:34 bin
-rw-r--r--
1 conan conan
75988 Aug 12 04:34 build.xml
-rw-r--r--
1 conan conan
70223 Aug 12 04:34 CHANGES.txt
drwxr-xr-x
2 conan conan
4096 Aug 12 04:34 conf
drwxr-xr-x 10 conan conan
4096 Aug 12 04:34 contrib
drwxr-xr-x
2 conan conan
4096 Aug 12 04:34 dist-maven
drwxr-xr-x
6 conan conan
4096 Aug 12 04:34 docs
-rw-r--r--
1 conan conan
1953 Aug 12 04:34 ivysettings.xml
-rw-r--r--
1 conan conan
3120 Aug 12 04:34 ivy.xml
drwxr-xr-x
4 conan conan
4096 Aug 12 04:34 lib
-rw-r--r--
1 conan conan
11358 Aug 12 04:34 LICENSE.txt
-rw-r--r--
1 conan conan
170 Aug 12 04:34 NOTICE.txt
-rw-r--r--
1 conan conan
1770 Aug 12 04:34 README_packaging.txt
-rw-r--r--
1 conan conan
1585 Aug 12 04:34 README.txt
drwxr-xr-x
5 conan conan
4096 Aug 12 04:34 recipes
drwxr-xr-x
8 conan conan
4096 Aug 12 04:34 src
-rw-r--r--
1 conan conan 1315806 Aug 12 04:34 zookeeper-3.4.5.jar
-rw-r--r--
1 conan conan
833 Aug 12 04:34 zookeeper-3.4.5.jar.asc
-rw-r--r--
1 conan conan
33 Aug 12 04:34 zookeeper-3.4.5.jar.md5
-rw-r--r--
1 conan conan
41 Aug 12 04:34 zookeeper-3.4.5.jar.sha1
修改配置文件conf/zoo.cfg
~ mkdir /home/conan/zoo/zk0
~ cp conf/zoo_sample.cfg conf/zoo.cfg
~ vi conf/zoo.cfg
tickTime=2000
initLimit=10
syncLimit=5
dataDir=/home/conan/zoo/zk0
clientPort=2181
非常简单，我们已经配置好了的zookeeper单节点
启动zookeeper
~ bin/zkServer.sh
JMX enabled by default
Using config: /home/conan/zoo/zk0/zookeeper345/bin/../conf/zoo.cfg
Usage: bin/zkServer.sh {start|start-foreground|stop|restart|status|upgrade|print-cmd}
conan@conan:~/zoo/zk0/zookeeper345$ bin/zkServer.sh start
JMX enabled by default
Using config: /home/conan/zoo/zk0/zookeeper345/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
#zk的服务显示为QuorumPeerMain
5321 QuorumPeerMain
#查看运行状态
~ bin/zkServer.sh status
JMX enabled by default
Using config: /home/conan/zoo/zk0/zookeeper345/bin/../conf/zoo.cfg
Mode: standalone
单节点的时，Mode会显示为standalone
停止ZooKeeper服务
~ bin/zkServer.sh stop
JMX enabled by default
Using config: /home/conan/zoo/zk0/zookeeper345/bin/../conf/zoo.cfg
Stopping zookeeper ... STOPPED
3. zookeeper伪分布式集群安装
所谓 “伪分布式集群” 就是在，在一台PC中，启动多个ZooKeeper的实例。“完全分布式集群” 是每台PC，启动一个ZooKeeper实例。
由于我的测试环境PC数量有限，所以在一台PC中，启动3个ZooKeeper的实例。
创建环境目录
~ mkdir /home/conan/zoo/zk1
~ mkdir /home/conan/zoo/zk2
~ mkdir /home/conan/zoo/zk3
#新建myid文件
~ echo "1" & /home/conan/zoo/zk1/myid
~ echo "2" & /home/conan/zoo/zk2/myid
~ echo "3" & /home/conan/zoo/zk3/myid
分别修改配置文件
修改：dataDir,clientPort
增加：集群的实例，server.X，”X”表示每个目录中的myid的值
~ vi /home/conan/toolkit/zookeeper345/conf/zk1.cfg
tickTime=2000
initLimit=10
syncLimit=5
dataDir=/home/conan/zoo/zk1
clientPort=2181
server.1=192.168.1.201:
server.2=192.168.1.201:
server.3=192.168.1.201:
~ vi /home/conan/toolkit/zookeeper345/conf/zk2.cfg
tickTime=2000
initLimit=10
syncLimit=5
dataDir=/home/conan/zoo/zk2
clientPort=2182
server.1=192.168.1.201:
server.2=192.168.1.201:
server.3=192.168.1.201:
~ vi /home/conan/toolkit/zookeeper345/conf/zk3.cfg
tickTime=2000
initLimit=10
syncLimit=5
dataDir=/home/conan/zoo/zk3
clientPort=2183
server.1=192.168.1.201:
server.2=192.168.1.201:
server.3=192.168.1.201:
3个节点的ZooKeeper集群配置完成，接下来我们的启动服务。
~ /home/conan/toolkit/zookeeper345/bin/zkServer.sh start zk1.cfg
~ /home/conan/toolkit/zookeeper345/bin/zkServer.sh start zk2.cfg
~ /home/conan/toolkit/zookeeper345/bin/zkServer.sh start zk3.cfg
5422 QuorumPeerMain
5395 QuorumPeerMain
5463 QuorumPeerMain
#查看节点状态
~ /home/conan/toolkit/zookeeper345/bin/zkServer.sh status zk1.cfg
JMX enabled by default
Using config: /home/conan/toolkit/zookeeper345/bin/../conf/zk1.cfg
Mode: follower
~ /home/conan/toolkit/zookeeper345/bin/zkServer.sh status zk2.cfg
JMX enabled by default
Using config: /home/conan/toolkit/zookeeper345/bin/../conf/zk2.cfg
Mode: leader
~ /home/conan/toolkit/zookeeper345/bin/zkServer.sh status zk3.cfg
JMX enabled by default
Using config: /home/conan/toolkit/zookeeper345/bin/../conf/zk3.cfg
Mode: follower
我们可以看到zk2是leader，zk1和zk3是follower
查看ZooKeeper物理文件目录结构
-L 3 /home/conan/zoo
/home/conan/zoo
├── zk0
├── zk1
├── myid
├── version-2
├── acceptedEpoch
├── currentEpoch
├── log.
└── snapshot.0
└── zookeeper_server.pid
├── zk2
├── myid
├── version-2
├── acceptedEpoch
├── currentEpoch
├── log.
└── snapshot.0
└── zookeeper_server.pid
└── zk3
├── myid
├── version-2
├── acceptedEpoch
├── currentEpoch
├── log.
└── snapshot.
└── zookeeper_server.pid
7 directories, 18 files
4. zookeeper命令行操作
我们通过客户端连接ZooKeeper的集群，我们可以任意的zookeeper是进行连接。
~ /home/conan/toolkit/zookeeper345/bin/zkCli.sh -server 192.168.1.201:2181
Connecting to 192.168.1.201
05:25:39,260 [myid:] - INFO
[main:Environment@100] - Client environment:zookeeper.version=3.4.5-1392090, built on 09/30/ GMT
05:25:39,267 [myid:] - INFO
[main:Environment@100] - Client environment:host.name=conan
05:25:39,269 [myid:] - INFO
[main:Environment@100] - Client environment:java.version=1.6.0_29
05:25:39,269 [myid:] - INFO
[main:Environment@100] - Client environment:java.vendor=Sun Microsystems Inc.
05:25:39,270 [myid:] - INFO
[main:Environment@100] - Client environment:java.home=/home/conan/toolkit/jdk16/jre
05:25:39,270 [myid:] - INFO
[main:Environment@100] - Client environment:java.class.path=/home/conan/toolkit/zookeeper345/bin/../build/classes:/home/conan/toolkit/zookeeper345/bin/../build/lib/*.jar:/home/conan/toolkit/zookeeper345/bin/../lib/slf4j-log4j12-1.6.1.jar:/home/conan/toolkit/zookeeper345/bin/../lib/slf4j-api-1.6.1.jar:/home/conan/toolkit/zookeeper345/bin/../lib/netty-3.2.2.Final.jar:/home/conan/toolkit/zookeeper345/bin/../lib/log4j-1.2.15.jar:/home/conan/toolkit/zookeeper345/bin/../lib/jline-0.9.94.jar:/home/conan/toolkit/zookeeper345/bin/../zookeeper-3.4.5.jar:/home/conan/toolkit/zookeeper345/bin/../src/java/lib/*.jar:/home/conan/toolkit/zookeeper345/bin/../conf:
05:25:39,271 [myid:] - INFO
[main:Environment@100] - Client environment:java.library.path=/home/conan/toolkit/jdk16/jre/lib/amd64/server:/home/conan/toolkit/jdk16/jre/lib/amd64:/home/conan/toolkit/jdk16/jre/../lib/amd64:/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
05:25:39,275 [myid:] - INFO
[main:Environment@100] - Client environment:java.io.tmpdir=/tmp
05:25:39,276 [myid:] - INFO
[main:Environment@100] - Client piler=
05:25:39,276 [myid:] - INFO
[main:Environment@100] - Client environment:os.name=Linux
05:25:39,277 [myid:] - INFO
[main:Environment@100] - Client environment:os.arch=amd64
05:25:39,281 [myid:] - INFO
[main:Environment@100] - Client environment:os.version=3.5.0-23-generic
05:25:39,282 [myid:] - INFO
[main:Environment@100] - Client environment:user.name=conan
05:25:39,282 [myid:] - INFO
[main:Environment@100] - Client environment:user.home=/home/conan
05:25:39,283 [myid:] - INFO
[main:Environment@100] - Client environment:user.dir=/home/conan/zoo
05:25:39,284 [myid:] - INFO
[main:ZooKeeper@438] - Initiating client connection, connectString=192.168.1.201 sessionTimeout=30000 watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@22ba6c83
Welcome to ZooKeeper!
JLine support is enabled
[zk: 192.168.1.201(CONNECTING) 0]
05:25:39,336 [myid:] - INFO
[main-SendThread(192.168.1.201:2181):ClientCnxn$SendThread@966] - Opening socket connection to server 192.168.1.201/192.168.1.201:2181. Will not attempt to authenticate using SASL (Unable to locate a login configuration)
05:25:39,345 [myid:] - INFO
[main-SendThread(192.168.1.201:2181):ClientCnxn$SendThread@849] - Socket connection established to 192.168.1.201/192.168.1.201:2181, initiating session
05:25:39,384 [myid:] - INFO
[main-SendThread(192.168.1.201:2181):ClientCnxn$SendThread@1207] - Session establishment complete on server 192.168.1.201/192.168.1.201:2181, sessionid = 0xef90001, negotiated timeout = 30000
WatchedEvent state:SyncConnected type:None path:null
[zk: 192.168.1.201(CONNECTED) 0]
集群已连接，下面我们要使用一下，ZooKeeper的命令行操作。
命令行操作
通过help打印命令行帮助
[zk: 192.168.1.201(CONNECTED) 1] help
ZooKeeper -server host:port cmd args
connect host:port
get path [watch]
ls path [watch]
set path data [version]
delquota [-n|-b] path
printwatches on|off
create [-s] [-e] path data acl
stat path [watch]
ls2 path [watch]
listquota path
setAcl path acl
getAcl path
redo cmdno
addauth scheme auth
delete path [version]
setquota -n|-b val path
ZooKeeper的结构，很像是目录结构，我们看到了像ls这样熟悉的命令。
#ls,查看/目录内容
[zk: 192.168.1.201(CONNECTED) 1] ls /
[zookeeper]
#create,创建一个znode节点
[zk: 192.168.1.201(CONNECTED) 2] create /node conan
Created /node
#ls,再查看/目录
[zk: 192.168.1.201(CONNECTED) 3] ls /
[node, zookeeper]
#get,查看/node的数据信息
[zk: 192.168.1.201(CONNECTED) 4] get /node
cZxid = 0x
ctime = Mon Aug 12 05:32:49 CST 2013
mZxid = 0x
mtime = Mon Aug 12 05:32:49 CST 2013
pZxid = 0x
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 5
numChildren = 0
#set,修改数据
[zk: 192.168.1.201(CONNECTED) 5] set /node fens.me
cZxid = 0x
ctime = Mon Aug 12 05:32:49 CST 2013
mZxid = 0x
mtime = Mon Aug 12 05:34:32 CST 2013
pZxid = 0x
cversion = 0
dataVersion = 1
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 7
numChildren = 0
#get,再查看/node的数据信息，已改为fens.me
[zk: 192.168.1.201(CONNECTED) 6] get /node
cZxid = 0x
ctime = Mon Aug 12 05:32:49 CST 2013
mZxid = 0x
mtime = Mon Aug 12 05:34:32 CST 2013
pZxid = 0x
cversion = 0
dataVersion = 1
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 7
numChildren = 0
#delete,删除/node
[zk: 192.168.1.201(CONNECTED) 7] delete /node
[zk: 192.168.1.201(CONNECTED) 8] ls /
[zookeeper]
#quit,退出客户端连接
[zk: 192.168.1.201(CONNECTED) 19] quit
Quitting...
05:40:29,304 [myid:] - INFO
[main:ZooKeeper@684] - Session: 0xef90002 closed
05:40:29,305 [myid:] - INFO
[main-EventThread:ClientCnxn$EventThread@509] - EventThread shut down
5. Java编程现实命令行操作
package org.conan.zookeeper.
import java.io.IOE
import org.apache.zookeeper.CreateM
import org.apache.zookeeper.KeeperE
import org.apache.zookeeper.WatchedE
import org.apache.zookeeper.W
import org.apache.zookeeper.ZooDefs.I
import org.apache.zookeeper.ZooK
public class BasicDemo1 {
public static void main(String[] args) throws IOException, KeeperException, InterruptedException {
// 创建一个与服务器的连接
ZooKeeper zk = new ZooKeeper("192.168.1.201:2181", 60000, new Watcher() {
// 监控所有被触发的事件
public void process(WatchedEvent event) {
System.out.println("EVENT:" + event.getType());
// 查看根节点
System.out.println("ls / =& " + zk.getChildren("/", true));
// 创建一个目录节点
if (zk.exists("/node", true) == null) {
zk.create("/node", "conan".getBytes(), Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
System.out.println("create /node conan");
// 查看/node节点数据
System.out.println("get /node =& " + new String(zk.getData("/node", false, null)));
// 查看根节点
System.out.println("ls / =& " + zk.getChildren("/", true));
// 创建一个子目录节点
if (zk.exists("/node/sub1", true) == null) {
zk.create("/node/sub1", "sub1".getBytes(), Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
System.out.println("create /node/sub1 sub1");
// 查看node节点
System.out.println("ls /node =& " + zk.getChildren("/node", true));
// 修改节点数据
if (zk.exists("/node", true) != null) {
zk.setData("/node", "changed".getBytes(), -1);
// 查看/node节点数据
System.out.println("get /node =& " + new String(zk.getData("/node", false, null)));
// 删除节点
if (zk.exists("/node/sub1", true) != null) {
zk.delete("/node/sub1", -1);
zk.delete("/node", -1);
// 查看根节点
System.out.println("ls / =& " + zk.getChildren("/", true));
// 关闭连接
zk.close();
运行结果：
15:33:29,699 [myid:] - INFO
[main:Environment@97] - Client environment:zookeeper.version=3.3.1-942149, built on 05/07/ GMT
15:33:29,702 [myid:] - INFO
[main:Environment@97] - Client environment:host.name=PC
15:33:29,702 [myid:] - INFO
[main:Environment@97] - Client environment:java.version=1.6.0_45
15:33:29,702 [myid:] - INFO
[main:Environment@97] - Client environment:java.vendor=Sun Microsystems Inc.
15:33:29,702 [myid:] - INFO
[main:Environment@97] - Client environment:java.home=D:\toolkit\java\jdk6\jre
15:33:29,703 [myid:] - INFO
[main:Environment@97] - Client environment:java.class.path=D:\workspace\java\zkdemo\target\C:\Users\Administrator\.m2\repository\org\apache\hadoop\zookeeper\3.3.1\zookeeper-3.3.1.C:\Users\Administrator\.m2\repository\log4j\log4j\1.2.15\log4j-1.2.15.C:\Users\Administrator\.m2\repository\javax\mail\mail\1.4\mail-1.4.C:\Users\Administrator\.m2\repository\javax\activation\activation\1.1\activation-1.1.C:\Users\Administrator\.m2\repository\jline\jline\0.9.94\jline-0.9.94.C:\Users\Administrator\.m2\repository\junit\junit\3.8.1\junit-3.8.1.jar
15:33:29,703 [myid:] - INFO
[main:Environment@97] - Client environment:java.library.path=D:\toolkit\java\jdk6\C:\Windows\Sun\Java\C:\Windows\system32;C:\WD:\toolkit\Rtools\D:\toolkit\Rtools\gcc-4.6.3\C:\Program Files (x86)\Common Files\NetSC:\Windows\system32;C:\WC:\Windows\System32\WC:\Windows\System32\WindowsPowerShell\v1.0\;D:\toolkit\Git\D:\toolkit\Git\C:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\;C:\Program Files\Microsoft SQL Server\100\Tools\Binn\;C:\Program Files\Microsoft SQL Server\100\DTS\Binn\;c:\Program Files (x86)\Common Files\Ulead Systems\MPEG;C:\Program Files (x86)\QuickTime\QTSystem\;D:\toolkit\MiKTex\miktex\bin\x64\;D:\toolkit\D:\toolkit\ant19\D:\toolkit\D:\toolkit\gradle15\D:\toolkit\java\jdk6\D:\toolkit\maven3\D:\toolkit\mysql56\D:\toolkit\python27;D:\toolkit\C:\Program Files\R\R-3.0.1\bin\x64;D:\toolkit\mongodb243\D:\toolkit\php54;D:\toolkit\nginx140;D:\toolkit\D:\toolkit\npm12\D:\toolkit\java\jdk6\jre\bin\.
15:33:29,703 [myid:] - INFO
[main:Environment@97] - Client environment:java.io.tmpdir=C:\Users\ADMINI~1\AppData\Local\Temp\
15:33:29,704 [myid:] - INFO
[main:Environment@97] - Client piler=
15:33:29,704 [myid:] - INFO
[main:Environment@97] - Client environment:os.name=Windows 7
15:33:29,704 [myid:] - INFO
[main:Environment@97] - Client environment:os.arch=amd64
15:33:29,705 [myid:] - INFO
[main:Environment@97] - Client environment:os.version=6.1
15:33:29,705 [myid:] - INFO
[main:Environment@97] - Client environment:user.name=Administrator
15:33:29,705 [myid:] - INFO
[main:Environment@97] - Client environment:user.home=C:\Users\Administrator
15:33:29,706 [myid:] - INFO
[main:Environment@97] - Client environment:user.dir=D:\workspace\java\zkdemo
15:33:29,707 [myid:] - INFO
[main:ZooKeeper@373] - Initiating client connection, connectString=192.168.1.201:2181 sessionTimeout=60000 watcher=org.conan.zookeeper.demo.BasicDemo1$1@3dfeca64
15:33:29,731 [myid:] - INFO
[main-SendThread():ClientCnxn$SendThread@1000] - Opening socket connection to server /192.168.1.201:2181
15:33:38,736 [myid:] - INFO
[main-SendThread(192.168.1.201:2181):ClientCnxn$SendThread@908] - Socket connection established to 192.168.1.201/192.168.1.201:2181, initiating session
15:33:38,804 [myid:] - INFO
[main-SendThread(192.168.1.201:2181):ClientCnxn$SendThread@701] - Session establishment complete on server 192.168.1.201/192.168.1.201:2181, sessionid = 0xef9000d, negotiated timeout = 60000
EVENT:None
ls / =& [zookeeper]
EVENT:NodeCreated
EVENT:NodeChildrenChanged
create /node conan
get /node =& conan
ls / =& [node, zookeeper]
EVENT:NodeCreated
create /node/sub1 sub1
ls /node =& [sub1]
EVENT:NodeDataChanged
get /node =& changed
EVENT:NodeDeleted
EVENT:NodeChildrenChanged
EVENT:NodeChildrenChanged
ls / =& [zookeeper]
15:33:38,877 [myid:] - INFO
[main:ZooKeeper@538] - Session: 0xef9000d closed
pom.xml，maven配置文件
&?xml version="1.0" encoding="UTF-8"?&
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"&
&modelVersion&4.0.0&/modelVersion&
&groupId&org.conan.zookeeper&/groupId&
&artifactId&zkdemo&/artifactId&
&version&0.0.1&/version&
&name&zkdemo&/name&
&description&zkdemo&/description&
&dependencies&
&dependency&
&groupId&org.apache.hadoop&/groupId&
&artifactId&zookeeper&/artifactId&
&version&3.3.1&/version&
&exclusions&
&exclusion&
&groupId&javax.jms&/groupId&
&artifactId&jms&/artifactId&
&/exclusion&
&exclusion&
&groupId&com.sun.jdmk&/groupId&
&artifactId&jmxtools&/artifactId&
&/exclusion&
&exclusion&
&groupId&com.sun.jmx&/groupId&
&artifactId&jmxri&/artifactId&
&/exclusion&
&/exclusions&
&/dependency&
&/dependencies&
&/project&
基础讲完，接下来就让我动手管理起，我们自己的分布式系统吧。
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