Zookeeper(1)Introduction and Install on Win7
MrZhangAdd 2012-06-09
Zookeeper(1)IntroductionandInstallonWin7
1.Overview
Zookeeperisahigh-performancecoordinationservicefordistributedapplications.
2.InstalltheZookeeperonwin7
Idownloadthelatestversionzookeeper-3.4.3.tar.gz.
Unzipthefileonwindows,copythedirectorytoworkingdirectory.
Addthedirectorytomypath=D:\tool\zookeeper-3.4.3\bin
copytheconfigurationfilefromconf/zoo_sample.cfgtozoo.cfg.Changesomecontentasfollow:
#Thenumberofmillisecondsofeachtick
tickTime=2000
#Thenumberofticksthattheinitial
#synchronizationphasecantake
initLimit=10
#Thenumberofticksthatcanpassbetween
#sendingarequestandgettinganacknowledgement
syncLimit=5
#thedirectorywherethesnapshotisstored.
#donotuse/tmpforstorage,/tmphereisjust
#examplesakes.
dataDir=c://tmp/zookeeper
#theportatwhichtheclientswillconnect
clientPort=2181
#
#Besuretoreadthemaintenancesectionofthe
#administratorguidebeforeturningonautopurge.
#
#http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
#
#ThenumberofsnapshotstoretainindataDir
#autopurge.snapRetainCount=3
#Purgetaskintervalinhours
#Setto"0"todisableautopurgefeature
#autopurge.purgeInterval=1
runthecommandtostarttheserveronwindows:
>zkServer.cmd
3.Trytheclientonwin7
>zkCli.cmd-server127.0.0.1:2181
>help
>ls/
[zookeeper]
Trytocreateanewznodebyrunningcreate/zk_testmy_datacommand.
>create/zk_testmy_data
Create/zk_test
>ls/
[zookeeper,zk_test]
>get/zk_test
my_data
>set/zk_testjunk
>delete/zk_test
>ls/
[zookeeper]
4.RunningReplicatedZooKeeper
Standalonemodeisconvenientforevaluation,somedevelopment,andtesting.Butinproduction,
weshouldrunZookeeperinreplicatedmode.
Areplicatedgroupofserversinthesameapplicationiscalledaquorum.
Changetheconfigurationzoo.cfgasfollow:
tickTime=2000
initLimit=10
syncLimit=5
dataDir=c://tmp/zookeeper
clientPort=2181
server.1=zoo1:2888:3888
server.2=zoo2:2888:3888
server.3=zoo3:2888:3888
initLimitistimeoutsZooKeeperusestolimitthelengthoftimetheZooKeeperserversinquorumhavetoconnecttoaleader.
syncLimitlimitshowfaroutofdateaservercanbefromaleader.
Ifyouwanttotestmultipleserversonasinglemachine,specifytheservernameaslocalhostwithuniquequorum&leaderelectionports(i.e.2888:3888,2889:3889,2890:3890intheexampleabove)foreachserver.Xinthatserver'sconfigfile.OfcourseseparatedataDirsanddistinctclientPortsarealsonecessary(intheabovereplicatedexample,runningonasinglelocalhost,youwouldstillhavethreeconfigfiles).
Itisnotwisetorunitonwindowsfrommyunderstanding,soIfindaredhatservertodothis.
5.InstallationonRedhat
>wgethttp://apache.deathculture.net/zookeeper/zookeeper-3.4.3/zookeeper-3.4.3.tar.gz
>tarzxvfzookeeper-3.4.3.tar.gz
>sudomvzookeeper-3.4.3//opt/tools/
>cpzoo_sample.cfgzoo1.cfg
>vizoo1.cfg
ckTime=2000
initLimit=10
syncLimit=5
dataDir=/tmp/zookeeper/snapshot/d_1
clientPort=2181
server.1=zoo1:2888:3888
server.2=zoo2:2889:3889
server.3=zoo3:2890:3890
>vizoo2.cfg
ckTime=2000
initLimit=10
syncLimit=5
dataDir=/tmp/zookeeper/snapshot/d_2
clientPort=2182
server.1=zoo1:2888:3888
server.2=zoo2:2889:3889
server.3=zoo3:2890:3890
>vizoo3.cfg
ckTime=2000
initLimit=10
syncLimit=5
dataDir=/tmp/zookeeper/snapshot/d_3
clientPort=2183
server.1=zoo1:2888:3888
server.2=zoo2:2889:3889
server.3=zoo3:2890:3890
Createthesedirectory
>mkdir/tmp/zookeeper/snapshot/d_1
>mkdir/tmp/zookeeper/snapshot/d_2
>mkdir/tmp/zookeeper/snapshot/d_3
Andcreatefilemyidunderthesedirectory
>vi/tmp/zookeeper/snapshot/d_1/myid
1
>vi/tmp/zookeeper/snapshot/d_2/myid
2
>vi/tmp/zookeeper/snapshot/d_3/myid
3
Addthistomymyprofilepath
>sudovi/etc/profile
PATH=.:$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH:$HOME/bin:$ANT_HOME/bin:/sbin:/opt/tools/zookeeper-3.4.3/bin:/usr/sbin:/usr/local/sbin:/home/luohua/git-1.7.6
>./etc/profile
starttheserverwiththesecommands:
>zkServer.shstartzoo1.cfg
>zkServer.shstartzoo2.cfg
>zkServer.shstartzoo3.cfg
Checkiftheserverisstarted.
>jps
10129Jps
9783QuorumPeerMain
9815QuorumPeerMain
9844QuorumPeerMain
Itrytoconnecttheserverwithmyclient.ButIgottheseerrormessage:
ErrorMessage:
WelcometoZooKeeper!
2012-06-0914:22:20,543[myid:]-WARN[main-SendThread(localhost.localdomain:2181):ZooKeeperSaslClient@123]-SecurityException:java.lang.SecurityException:UnabletolocatealoginconfigurationoccurredwhentryingtofindJAASconfiguration.
2012-06-0914:22:20,544[myid:]-INFO[main-SendThread(localhost.localdomain:2181):ZooKeeperSaslClient@125]-ClientwillnotSASL-authenticatebecausethedefaultJAASconfigurationsection'Client'couldnotbefound.IfyouarenotusingSASL,youmayignorethis.Ontheotherhand,ifyouexpectedSASLtowork,pleasefixyourJAASconfiguration.
2012-06-0914:22:20,590[myid:]-INFO[main-SendThread(localhost.localdomain:2181):ClientCnxn$SendThread@1053]-Unabletoreadadditionaldatafromserversessionid0x0,likelyserverhasclosedsocket,closingsocketconnectionandattemptingreconnect
2012-06-0914:22:29,264[myid:]-WARN[main-SendThread(localhost.localdomain:2181):ZooKeeperSaslClient@123]-SecurityException:java.lang.SecurityException:UnabletolocatealoginconfigurationoccurredwhentryingtofindJAASconfiguration.
2012-06-0914:22:29,264[myid:]-INFO[main-SendThread(localhost.localdomain:2181):ZooKeeperSaslClient@125]-ClientwillnotSASL-authenticatebecausethedefaultJAASconfigurationsection'Client'couldnotbefound.IfyouarenotusingSASL,youmayignorethis.Ontheotherhand,ifyouexpectedSASLtowork,pleasefixyourJAASconfiguration.
Solution:
>sudovi/etc/hosts
iphadoop_name
Notsolvethisproblem.Iwillchecklater.
references:
http://zookeeper.apache.org/
http://blog.csdn.net/baiduforum/article/details/6981456
http://blog.csdn.net/gudaoqianfu/article/details/7327191
