ZooKeeper布式集群安装及使用
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ZooKeeper布式集群安装及使用
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前言
ZooKeeper是Hadoop家族的一款高性能的分布式協作的產品。在單機中，系統協作大都是進程級的操作。分布式系統中，服務協作都是跨服務 器才能完成的。在ZooKeeper之前，我們對于協作服務大都使用消息中間件，隨著分布式系統的普及，用消息中間件完成協作，會有大量的程序開發。 ZooKeeper直接面向于分布式系統，可以減少我們自己的開發，幫助我們更好完成分布式系統的數據管理問題。
目錄
zookeeper介紹
zookeeper單節點安裝
zookeeper偽分布式集群安裝
zookeeper命令行操作
Java編程現實命令行操作
1. zookeeper介紹
ZooKeeper是一個為分布式應用所設計的分布的、開源的協調服務，它主要是用來解決分布式應用中經常遇到的一些數據管理問題，簡化分布式應用 協調及其管理的難度，提供高性能的分布式服務。ZooKeeper本身可以以Standalone模式安裝運行，不過它的長處在于通過分布式 ZooKeeper集群（一個Leader，多個Follower），基于一定的策略來保證ZooKeeper集群的穩定性和可用性，從而實現分布式應用 的可靠性。
ZooKeeper是作為分布式協調服務，是不需要依賴于Hadoop的環境，也可以為其他的分布式環境提供服務。
2. zookeeper單節點安裝Standalones模式
系統環境：
Linux Ubuntu 12.04.2 LTS 64bit server
Java: 1.6.0_29 64-Bit Server VM
下載zookeeper
~?mkdir?/home/conan/toolkit ~?cd?/home/conan/toolkit ~?wget?http://apache.dataguru.cn/zookeeper/stable/zookeeper-3.4.5.tar.gz ~?tar?xvf?zookeeper-3.4.5.tar.gz ~?mv?zookeeper-3.4.5?zookeeper345 ~?cd?zookeeper345 ~?ls?-l 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非常簡單，我們已經配置好了的zookeeper單節點
啟動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的服務顯示為QuorumPeerMain ~?jps 5321?QuorumPeerMain 5338?Jps#查看運行狀態 ~?bin/zkServer.sh?status JMX?enabled?by?default Using?config:?/home/conan/zoo/zk0/zookeeper345/bin/../conf/zoo.cfg Mode:?standalone單節點的時，Mode會顯示為standalone
停止ZooKeeper服務
~?bin/zkServer.sh?stop JMX?enabled?by?default Using?config:?/home/conan/zoo/zk0/zookeeper345/bin/../conf/zoo.cfg Stopping?zookeeper?...?STOPPED3. zookeeper偽分布式集群安裝
所謂 “偽分布式集群” 就是在，在一臺PC中，啟動多個ZooKeeper的實例?！巴耆植际郊骸?是每臺PC，啟動一個ZooKeeper實例。
由于我的測試環境PC數量有限，所以在一臺PC中，啟動3個ZooKeeper的實例。
創建環境目錄
~?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分別修改配置文件
修改：dataDir,clientPort
增加：集群的實例，server.X，”X”表示每個目錄中的myid的值
3個節點的ZooKeeper集群配置完成，接下來我們的啟動服務。
啟動集群
~?/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~?jps 5422?QuorumPeerMain 5395?QuorumPeerMain 5463?QuorumPeerMain 5494?Jps#查看節點狀態 ~?/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我們可以看到zk2是leader，zk1和zk3是follower
查看ZooKeeper物理文件目錄結構
~?tree??-L?3?/home/conan/zoo /home/conan/zoo ├──?zk0 ├──?zk1 │???├──?myid │???├──?version-2 │???│???├──?acceptedEpoch │???│???├──?currentEpoch │???│???├──?log.100000001 │???│???└──?snapshot.0 │???└──?zookeeper_server.pid ├──?zk2 │???├──?myid │???├──?version-2 │???│???├──?acceptedEpoch │???│???├──?currentEpoch │???│???├──?log.100000001 │???│???└──?snapshot.0 │???└──?zookeeper_server.pid └──?zk3├──?myid├──?version-2│???├──?acceptedEpoch│???├──?currentEpoch│???├──?log.100000001│???└──?snapshot.100000000└──?zookeeper_server.pid7?directories,?18?files4. zookeeper命令行操作
我們通過客戶端連接ZooKeeper的集群，我們可以任意的zookeeper是進行連接。
~?/home/conan/toolkit/zookeeper345/bin/zkCli.sh?-server?192.168.1.201:2181Connecting?to?192.168.1.201 2013-08-12?05:25:39,260?[myid:]?-?INFO??[main:Environment@100]?-?Client?environment:zookeeper.version=3.4.5-1392090,?built?on?09/30/2012?17:52?GMT 2013-08-12?05:25:39,267?[myid:]?-?INFO??[main:Environment@100]?-?Client?environment:host.name=conan 2013-08-12?05:25:39,269?[myid:]?-?INFO??[main:Environment@100]?-?Client?environment:java.version=1.6.0_29 2013-08-12?05:25:39,269?[myid:]?-?INFO??[main:Environment@100]?-?Client?environment:java.vendor=Sun?Microsystems?Inc. 2013-08-12?05:25:39,270?[myid:]?-?INFO??[main:Environment@100]?-?Client?environment:java.home=/home/conan/toolkit/jdk16/jre 2013-08-12?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: 2013-08-12?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 2013-08-12?05:25:39,275?[myid:]?-?INFO??[main:Environment@100]?-?Client?environment:java.io.tmpdir=/tmp 2013-08-12?05:25:39,276?[myid:]?-?INFO??[main:Environment@100]?-?Client?environment:java.compiler= 2013-08-12?05:25:39,276?[myid:]?-?INFO??[main:Environment@100]?-?Client?environment:os.name=Linux 2013-08-12?05:25:39,277?[myid:]?-?INFO??[main:Environment@100]?-?Client?environment:os.arch=amd64 2013-08-12?05:25:39,281?[myid:]?-?INFO??[main:Environment@100]?-?Client?environment:os.version=3.5.0-23-generic 2013-08-12?05:25:39,282?[myid:]?-?INFO??[main:Environment@100]?-?Client?environment:user.name=conan 2013-08-12?05:25:39,282?[myid:]?-?INFO??[main:Environment@100]?-?Client?environment:user.home=/home/conan 2013-08-12?05:25:39,283?[myid:]?-?INFO??[main:Environment@100]?-?Client?environment:user.dir=/home/conan/zoo 2013-08-12?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]?2013-08-12?05:25:39,336?[myid:]?-?INFO??[main-SendThread(192.168.1.201:2181):ClientCnxn$SendThread@966]?-?Opening?socket?connection?to?server?192.168.1.201/192.168.1.201:2181.?Will?not?attempt?to?authenticate?using?SASL?(Unable?to?locate?a?login?configuration) 2013-08-12?05:25:39,345?[myid:]?-?INFO??[main-SendThread(192.168.1.201:2181):ClientCnxn$SendThread@849]?-?Socket?connection?established?to?192.168.1.201/192.168.1.201:2181,?initiating?session 2013-08-12?05:25:39,384?[myid:]?-?INFO??[main-SendThread(192.168.1.201:2181):ClientCnxn$SendThread@1207]?-?Session?establishment?complete?on?server?192.168.1.201/192.168.1.201:2181,?sessionid?=?0x1406f3c1ef90001,?negotiated?timeout?=?30000WATCHER::WatchedEvent?state:SyncConnected?type:None?path:null[zk:?192.168.1.201(CONNECTED)?0]集群已連接，下面我們要使用一下，ZooKeeper的命令行操作。
命令行操作
通過help打印命令行幫助
ZooKeeper的結構，很像是目錄結構，我們看到了像ls這樣熟悉的命令。
#ls,查看/目錄內容 [zk:?192.168.1.201(CONNECTED)?1]?ls?/ [zookeeper]#create,創建一個znode節點 [zk:?192.168.1.201(CONNECTED)?2]?create?/node?conan Created?/node#ls,再查看/目錄 [zk:?192.168.1.201(CONNECTED)?3]?ls?/ [node,?zookeeper]#get,查看/node的數據信息 [zk:?192.168.1.201(CONNECTED)?4]?get?/node conan cZxid?=?0x100000006 ctime?=?Mon?Aug?12?05:32:49?CST?2013 mZxid?=?0x100000006 mtime?=?Mon?Aug?12?05:32:49?CST?2013 pZxid?=?0x100000006 cversion?=?0 dataVersion?=?0 aclVersion?=?0 ephemeralOwner?=?0x0 dataLength?=?5 numChildren?=?0#set,修改數據 [zk:?192.168.1.201(CONNECTED)?5]?set?/node?fens.me cZxid?=?0x100000006 ctime?=?Mon?Aug?12?05:32:49?CST?2013 mZxid?=?0x100000007 mtime?=?Mon?Aug?12?05:34:32?CST?2013 pZxid?=?0x100000006 cversion?=?0 dataVersion?=?1 aclVersion?=?0 ephemeralOwner?=?0x0 dataLength?=?7 numChildren?=?0#get,再查看/node的數據信息，已改為fens.me [zk:?192.168.1.201(CONNECTED)?6]?get?/node fens.me cZxid?=?0x100000006 ctime?=?Mon?Aug?12?05:32:49?CST?2013 mZxid?=?0x100000007 mtime?=?Mon?Aug?12?05:34:32?CST?2013 pZxid?=?0x100000006 cversion?=?0 dataVersion?=?1 aclVersion?=?0 ephemeralOwner?=?0x0 dataLength?=?7 numChildren?=?0#delete,刪除/node [zk:?192.168.1.201(CONNECTED)?7]?delete?/node [zk:?192.168.1.201(CONNECTED)?8]?ls?/ [zookeeper]#quit,退出客戶端連接 [zk:?192.168.1.201(CONNECTED)?19]?quit Quitting... 2013-08-12?05:40:29,304?[myid:]?-?INFO??[main:ZooKeeper@684]?-?Session:?0x1406f3c1ef90002?closed 2013-08-12?05:40:29,305?[myid:]?-?INFO??[main-EventThread:ClientCnxn$EventThread@509]?-?EventThread?shut?down5. Java編程現實命令行操作
package?org.conan.zookeeper.demo;import?java.io.IOException;import?org.apache.zookeeper.CreateMode; import?org.apache.zookeeper.KeeperException; import?org.apache.zookeeper.WatchedEvent; import?org.apache.zookeeper.Watcher; import?org.apache.zookeeper.ZooDefs.Ids; import?org.apache.zookeeper.ZooKeeper;public?class?BasicDemo1?{public?static?void?main(String[]?args)?throws?IOException,?KeeperException,?InterruptedException?{//?創建一個與服務器的連接ZooKeeper?zk?=?new?ZooKeeper("192.168.1.201:2181",?60000,?new?Watcher()?{//?監控所有被觸發的事件public?void?process(WatchedEvent?event)?{System.out.println("EVENT:"?+?event.getType());}});//?查看根節點System.out.println("ls?/?=>?"?+?zk.getChildren("/",?true));//?創建一個目錄節點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節點數據System.out.println("get?/node?=>?"?+?new?String(zk.getData("/node",?false,?null)));//?查看根節點System.out.println("ls?/?=>?"?+?zk.getChildren("/",?true));}//?創建一個子目錄節點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節點System.out.println("ls?/node?=>?"?+?zk.getChildren("/node",?true));}//?修改節點數據if?(zk.exists("/node",?true)?!=?null)?{zk.setData("/node",?"changed".getBytes(),?-1);//?查看/node節點數據System.out.println("get?/node?=>?"?+?new?String(zk.getData("/node",?false,?null)));}//?刪除節點if?(zk.exists("/node/sub1",?true)?!=?null)?{zk.delete("/node/sub1",?-1);zk.delete("/node",?-1);//?查看根節點System.out.println("ls?/?=>?"?+?zk.getChildren("/",?true));}//?關閉連接zk.close();} }運行結果：
2013-08-12?15:33:29,699?[myid:]?-?INFO??[main:Environment@97]?-?Client?environment:zookeeper.version=3.3.1-942149,?built?on?05/07/2010?17:14?GMT 2013-08-12?15:33:29,702?[myid:]?-?INFO??[main:Environment@97]?-?Client?environment:host.name=PC201304202140 2013-08-12?15:33:29,702?[myid:]?-?INFO??[main:Environment@97]?-?Client?environment:java.version=1.6.0_45 2013-08-12?15:33:29,702?[myid:]?-?INFO??[main:Environment@97]?-?Client?environment:java.vendor=Sun?Microsystems?Inc. 2013-08-12?15:33:29,702?[myid:]?-?INFO??[main:Environment@97]?-?Client?environment:java.home=D:\toolkit\java\jdk6\jre 2013-08-12?15:33:29,703?[myid:]?-?INFO??[main:Environment@97]?-?Client?environment:java.class.path=D:\workspace\java\zkdemo\target\classes;C:\Users\Administrator\.m2\repository\org\apache\hadoop\zookeeper\3.3.1\zookeeper-3.3.1.jar;C:\Users\Administrator\.m2\repository\log4j\log4j\1.2.15\log4j-1.2.15.jar;C:\Users\Administrator\.m2\repository\javax\mail\mail\1.4\mail-1.4.jar;C:\Users\Administrator\.m2\repository\javax\activation\activation\1.1\activation-1.1.jar;C:\Users\Administrator\.m2\repository\jline\jline\0.9.94\jline-0.9.94.jar;C:\Users\Administrator\.m2\repository\junit\junit\3.8.1\junit-3.8.1.jar 2013-08-12?15:33:29,703?[myid:]?-?INFO??[main:Environment@97]?-?Client?environment:java.library.path=D:\toolkit\java\jdk6\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;D:\toolkit\Rtools\bin;D:\toolkit\Rtools\gcc-4.6.3\bin;C:\Program?Files?(x86)\Common?Files\NetSarang;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;D:\toolkit\Git\cmd;D:\toolkit\Git\bin;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\sshclient;D:\toolkit\ant19\bin;D:\toolkit\eclipse;D:\toolkit\gradle15\bin;D:\toolkit\java\jdk6\bin;D:\toolkit\maven3\bin;D:\toolkit\mysql56\bin;D:\toolkit\python27;D:\toolkit\putty;C:\Program?Files\R\R-3.0.1\bin\x64;D:\toolkit\mongodb243\bin;D:\toolkit\php54;D:\toolkit\nginx140;D:\toolkit\nodejs;D:\toolkit\npm12\bin;D:\toolkit\java\jdk6\jre\bin\server;. 2013-08-12?15:33:29,703?[myid:]?-?INFO??[main:Environment@97]?-?Client?environment:java.io.tmpdir=C:\Users\ADMINI~1\AppData\Local\Temp\ 2013-08-12?15:33:29,704?[myid:]?-?INFO??[main:Environment@97]?-?Client?environment:java.compiler= 2013-08-12?15:33:29,704?[myid:]?-?INFO??[main:Environment@97]?-?Client?environment:os.name=Windows?7 2013-08-12?15:33:29,704?[myid:]?-?INFO??[main:Environment@97]?-?Client?environment:os.arch=amd64 2013-08-12?15:33:29,705?[myid:]?-?INFO??[main:Environment@97]?-?Client?environment:os.version=6.1 2013-08-12?15:33:29,705?[myid:]?-?INFO??[main:Environment@97]?-?Client?environment:user.name=Administrator 2013-08-12?15:33:29,705?[myid:]?-?INFO??[main:Environment@97]?-?Client?environment:user.home=C:\Users\Administrator 2013-08-12?15:33:29,706?[myid:]?-?INFO??[main:Environment@97]?-?Client?environment:user.dir=D:\workspace\java\zkdemo 2013-08-12?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$1@3dfeca64 2013-08-12?15:33:29,731?[myid:]?-?INFO??[main-SendThread():ClientCnxn$SendThread@1000]?-?Opening?socket?connection?to?server?/192.168.1.201:2181 2013-08-12?15:33:38,736?[myid:]?-?INFO??[main-SendThread(192.168.1.201:2181):ClientCnxn$SendThread@908]?-?Socket?connection?established?to?192.168.1.201/192.168.1.201:2181,?initiating?session 2013-08-12?15:33:38,804?[myid:]?-?INFO??[main-SendThread(192.168.1.201:2181):ClientCnxn$SendThread@701]?-?Session?establishment?complete?on?server?192.168.1.201/192.168.1.201:2181,?sessionid?=?0x1406f3c1ef9000d,?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] 2013-08-12?15:33:38,877?[myid:]?-?INFO??[main:ZooKeeper@538]?-?Session:?0x1406f3c1ef9000d?closedpom.xml，maven配置文件
<?xml?version="1.0"?encoding="UTF-8"?> <project 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>基礎講完，接下來就讓我動手管理起，我們自己的分布式系統吧。
轉載請注明出處：
http://blog.fens.me/hadoop-zookeeper-intro/
轉載于:https://blog.51cto.com/zhaocheng/1654736
總結
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