云計算導(dǎo)論P(yáng)aaS服務(wù)模式

?????????????CONTENTS??PART零一??PART零二????PART零三CloudFoundryPART零四Hadoop?????????????a????????四.一四?????????????????????????四??????????????????PlatformasaService?PaaS????????????????????????????????????????????????S????????????????????????????????????PaaS????????????????P????????????????????P????????????????????????????????????????????四.一.一五????????????????????????????????????????二一???P???Web?????????????????????????IT????????????????????????????S?????????????????llS????????????????????????????????????????????S??????????????????????????????????????????????????????????????lPaaS????????????????PaaS????S???????????????????????????????????????四???????????????PaaSS????????????????S???l???????????????????????????????????????????????????????????S?????????PaaS????a?????????????????P????????????四.一.二六Web??PPaaS???????PaaS???????????P??P?Web??PPaaS???????????P????????S???a?????????????????????四?P?????四?P?????????????a????a?????????????????S???四.一.二七?????PaaS????????????S???PaaS???????a????????????????????????????????????????????????????????????????????????????四???????????????????????????????????????????????P??????????????????四.一.三八一??????????????????????????S?????????????????????P????????????????????????PaaS???????????????????????????????????????????????????????????????????????????????????????a?????????????????????……????????????????????……??????PaaS???????四????????????P????????PaaSP??????????P?????????????????????????????????????四.一.三九二??S???????????aP??????????????????????????????????????????????????????????????????????????????????????????????Web??????????????????????????????四?????????????????????????????????????????????S??????????????????????????????????????????S???????????????????????四.一.三一零三???????????????????????a?????PaaS????????????????????????????????????????PaaS????????????????PaaS???????四?API???????????????????????????PaaS?????????a???????S?PaaS?????P?????????S??????????????????????????S????????????P四.二一二??????a???????????????????????IT?????????????????????????a??PaaS?PaaS??????????????????PaaS????????????PaaS???????四?????????????????PaaS??S??????PaaS????????????????PaaS?????????????四??PaaS?????????????四?????????????GAE???????Web???PaaS??????????????????????????S?????????????????????????S四.二.一一三PaaS??????????????????????????????四???A???B???CRM??????A??????????????B??????????????????????????????????????????????????????a???????????????????????????????????????????B??A?????????????PaaS???????????????????????????????????S???????????P?????IaaS??????????????????????PaaS?????????????????????????????MySQL?DB二DB二??????????MasterSlave?????????????????????????????????????四.二.二一四lPaaSP?????IaaSP???????IaaSP?????????????S四??????????????????????????????????IaaSP?la??PaaSP???四??????????????PaaSP??????????????????????????????????????????l????????????????????PaaSP????????????????S??a???????????l???????????????????????????????????????l????S??????????????????????????????????????????????????P??????????四?????????????????????????????????四.二.三一五?一?PaaS?????????P?????????????????????????????????PaaS????????????????????????PaaS????????四????????????????????????四?S??????????????????????PaaS???????二?????????????????PaaS????????????????????????????????????????a??????????a????三????????????????????PaaS???????????????????????????????????????????????????????????????????????????????????????????四???????????PaaS?????????????????????????????????四.二.四一六?一??PaaS????????????????????????????????PaaS???????四?????????????????????????四??????????????PaaS????????????????????PaaS??????????????????????????????二?P?????PaaS????????????a????????????????????S?????PaaS???????PaaS??????S????????????????IaaS???????????PaaS?????????????????????????PaaS??IaaS??????????三?PaaS??????????????????????????????P?????????????????????????????????????????????????????????????????四.三.一一八??????????????????????????四e??????a???rn??????????w????a??d?????e??????F?????d??b???Rl??u?????V???????Pw??????四V?????????????????四???????????????i????????a??????M?al???????so???????????????????????P???????????d?a?????????????????y?????????so??R?y????CS??????r??????????四.三.二一九一.S??al???三??u???l???CloudFoundry??C???o?al?d???y??a??SpringforJava?.?RubyonRails?Node.js?Grails?ScalaonLift??????四???l?a??Python?PHP?????????Cl?d??CloudFoundry???d??u?????n???????????vSphere/vCloud?OpenStack?AWS?Rackspace??o?????二?????l???CloudFoundry?CP??F????l????S?????u?P??F????l?????l?????F?????????????PaaS?C??u??l?d????????????????????C??o????????????四.三.三二零CloudFoundry?d??????????????????a??????F????C???????????????CloudFoundryC???y???Ruby?u????a????????????????F??l???CloudFoundry????????????????C????????????????Sn????????????o??????C???????P?四?r?????????????????????????o????????????????四.三.三二一CloudFoundry??????????四Services????????????零一零二零三零四零五零六零七零八Page??????????????????????LA??&?????????????RS??????????&?????????&?????????????????&??????????????????????????????&?&??????????????H??????????????B?E????A??A??????????一二三四五六七八????????????Cu?四.三.四二二?P??????CloudFoundry?????Router?CloudController?HealthManager?DEA?NFS?NATS?CloudControllerDatabase??Service?uS?????uSF?????????y??????APIl????????????四?????????????????uS?o????????????四?????d??d????????????????????????CloudFoundry四????CloudFoundry??UAA???????r???a?C??UAA?nCloudFoundry??????C??a?C??UAA?????C???????C?????????????四?????????????????dC??四.三.五二三?????????????S??????????????四?????????????P??????????????????????????n????a????o????????o?????o??????o???????o??????CloudFoundry???????????????o???u????????????????r???????????????l?????????Fr?CloudFoundry???????o????????o?????????????o???y??????????o???????????????????????????????P??????????P四.三.五二四lllll?????RouterCluster???????CloudFoundry????a四???????????????CloudCountrollerCluster?????????CloudFoundry???????????????HealthManagerCluster????????????????????????????????NFSServer?CCDB?UAADB??????????UserAuthenticationAuthorizationCluster?????a四??????????lDEA???DropletExecutionAgencyCluster??DEA?????????????l七??????ServiceCluster???????????????????????Redis?MySql?Memcached?MongoDB??lNATS?NATS????????????????????????????NATS????????????????????????ll?????StagerCluster?????????CloudFoundry????CloudController?????????????????DEA??????P??????Loggregator?CloudFoundry???????S???????????????S?????????????????????????????四.四.一二六????????????????????????????????????????????????四???P???????????????????????????????????????????????????????Hadoop???????????????????????????????S?????S????????HDFS????????MapReduce????Hadoop??????????????????????????Hadoop????????????????????????????????S???????Hadoop????????a???????????????????????????????????????????????????????????四.四.二Hadoop?????????????二七Hadoop??Google???????????????二零零三????????????四?????????????????????????????Google????????GFS??????DougCutting?????????????Nutch?aGoogleGFS??MapReduce????????????????二零零四?????????P??????Google???Doug?MapReduce:???????????????????????????????????????????GFS?MapReduce??????????S????????????????二零零六??Yahoo???DougCutting???????Hadoop???????????????????????YahooYahooDoug??????Hadoop???Hadoop???四.四.三Hadoop???????????????二八?????????Hadoop????????S???????????S?????Hadoop????????HDFS???????????MapReduce????S????Google???GFS?MapReduce???????????????????????HDFSMapReduceMapReduce???????????Map?Reduce????????????????????????MapReduce?HDFS??????????????MapReduce??????????????HDFS??????HDFS???????????????????????P?????????????????????a????????HDFS?????????????四????????????????????a????????????????????????四.四.四HDFS二九?????四??????????/????/???????????/???????p??????????????????????????tD????????????????????????????????a??????四???????????????????????????N??????????????yu?????????????????e???????????????????s??r???????????o??????????????????…??/home/foo/data,三…??????????Pm????F??u??????????????b???????????????????b????????????????????e??a??????????????????一???二?????????????d??????????????????H??i??????????????S???l????????????????????????????????????????e四.四.五MapReduce三零MapReduce?????????????e???????????????????????R?????????????????map????????????????reduce??????d????????????e?Hadoop?MapReduce????a?S????????????????u???a????c???Hadoop???????R??????四??????????????M?Hadoop?M??p???????????R????????????P???????????????????????????????????MapReduce???????R?????????????????????????????????????????????四.四.六MapReduce三一???????MapReduce?P???????一???????MapReduce????二??????????三??map???四??reduce???????MapReduce??????ll四?????????????????????????????????????????????????????????????????????Map????????????????????a??????Map?????????Reduce??????????????????????????????????Map????????????????????????l??S????????????????Map?Reduce??????????????????四.四.六MapReduce三二?一??????Map?Reduce????二????????????????????????Hadoop?????????????????????P一.//map??二.//key:???????value:???????map(Stringkey,Stringvalue)?//????四????四????Sa????????四??????????splits<key,value>三.??????????四???MapReduce四.???????????map<key,value>五.words=SplitIntoTokens(value);foreachwordwinwords:EmitIntermediate(w,"一");?????????<key,value>六.七.八.九.//Reduce??一零.一一.一二.一三.一四.一五.//key:?????values:??????????reduce(Stringkey,Iteratorvalues):intresult=零;foreachvinvalues:result+=StringToInt(v);Emit(key,IntToString(result));????????????四??四.四.六MapReduce三三?三???Map?????<key,value>???MapP???????key?????????bine????key???value??????Map?????????四?S??MapP????Map??????????Reduce???ReduceP????MapP?????????????????a???reduce???????????<key,value>?????WordCount??????四.四.七HDFS?MapReduce?????????????三四??????????????HDFS?????MapReduce?P四???HDFS?MapReduce??四??????????l???MapReduce????Hadoop???????????????????????????MapReduce??????????????????????????a???????????????????????????????????????l????Hadoop??????HDFS?MapReduce????????????????