お前のDockerイメージはまだ重い💢💢💢

by stormcat24

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͓લͷ%PDLFSΠϝʔδ͸ ·ͩॏ͍ 2016/02/05 JAWS-UG ίϯςφࢧ෦ #4 @stormcat24 ʙମࢷ๱཰1έλͷDockerΠϝʔδΛ໨ࢦͯ͠ʙ

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‣ @stormcat24 ‣ Akinori Yamada ‣ CyberAgent, Inc ‣ Technical Engineer ‣ DevOps ‣ http://stormcat.hatenablog.com ‣ AmebaFRESH!

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"NFCB'3&4)

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ौ୩ఆ఺Χϝϥͱ͔

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ण࢘԰ϥΠϒͱ͔

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AmebaFRESH! is Full Dockernized Service! by EC2 Container Service

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ͦ͏͍΍લճ΋஻Γ·ͨ͠ https://speakerdeck.com/stormcat24/next-fresh-applications-with-amazon-ecs

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લճͷ࿩͸ɾɾɾ ‣ FRESH!ͷECS࢖ͬͨΞʔΩςΫνϟ ‣ Blue Green Deploymentͱ͔ ‣ docker-machineͰͷϩʔΧϧ։ൃ ‣ DockerΠϝʔδͷݮྔ ‣ ͦͷଞDevOpsͱ͔

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ࠓ೔͸ݮྔͷ࿩͚ͩ͠·͢

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ಥવͰ͕͢

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໿(#ͷ%PDLFSΠϝʔδ QVMMʹԿඵ͔͔Δʁ

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ଌఆ৚݅ ‣ EC2্ͷPrivate Docker Registry(V2)Λར༻ ‣ Registry͕ར༻͢ΔετϨʔδ͸S3 ‣ ಉҰϦʔδϣϯͷEC2͔ΒࢦఆͷΠϝʔδΛdocker pull͢Δ ‣ EC2ɺS3ڞʹap-northeast-1(Tokyo) ‣ EC2্ʹ͸ΠϝʔδͷϨΠϠʔΩϟογϡ͸ଘࡏ͠ ͳ͍΋ͷͱ͢Δ

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"OTXFS໿ඵ ※ΠϝʔδʹΑͬͯࠩ͸΋ͪΖΜ͋Γ·͢

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࣮͸͜Ε͸͔ͳΓ޷৚݅ ‣ EC2ͱRegistry, S3͸ಉҰϦʔδϣϯͳͷͰϨΠς ϯγ௿ ‣ DockerHubʹಉΠϝʔδΛஔ͍ͨ৔߹ɺ໿75ඵ͘ Β͍ͩͬͨ

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ඵͳΒѱ͘ͳ͍ɾɾɾʁ

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͍΍ɺݱ࣮͸ݫ͍͠

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ίϯςφ̍ͭͰ͸੒ཱ͠ͳ͍

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զʑ͸ଟ͘ͷίϯςφΛӡ༻͢Δɹ ‣ ༷ʑͳ໾ׂͷίϯϙʔωϯτͰγεςϜ͸੒ཱ ‣ ଞͷίϯςφͱڠௐͯ͠ಈ͘ ‣ td-agentͷग़൪΋ଟ͍ ‣ 1ͭͷϗετΛσϓϩΠ͢Δͷʹɺෳ਺ͷDockerί ϯςφΛpull͢Δඞཁ͕͋Δ

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ίϯςφʹඵɺ஗͍

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%PDLFSΠϝʔδ͕େ͖͍ͱ ‣ ΠϝʔδͷϏϧυɺCI࣌ؒ↑ ‣ Πϝʔδͷμ΢ϯϩʔυ࣌ؒ↑ ‣ ΠϝʔδͷΞοϓϩʔυ࣌ؒ↑ ‣ ੜ࢈ੑ↓ ‣ Twitter͢Δ࣌ؒ↑

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ӡ༻ʹٴ΅͢Өڹ ‣ σϓϩΠ࣌ؒ↑ ‣ “ࣺͯΔΠϯϑϥӡ༻”ͷ৔߹ɺΠϝʔδͷϨΠϠʔ Ωϟογϡʹ͸͋·ΓཔΕͳ͍ʢϑϧμ΢ϯϩʔυ ͕ଟ͍ʣ ‣ EC2ͷAutoScalingͰ௥Ճ͞ΕͨΠϯελϯε͕ αʔϏεΠϯ͢Δ·Ͱͷ࣌ؒ↑

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ॏ͍%PDLFSΠϝʔδ ྑ͍͜ͱແ͠

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͚ܰΕ͹͍ܰ΄Ͳ Ձ஋͕͋Δ

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ΑΖ͍͠ɺͰ͸ݮྔͩ

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Πϝʔδݮྔϝιου ‣ ΠϝʔδͷϨΠϠʔ਺ΛݮΒ͢ ‣ ࢈ۀഇغ෺Λద੾ʹॲཧ͢Δ ‣ ϘϦϡʔϜϚ΢ϯτΛ׆༻͢Δ ‣ ͍ܰϕʔεΠϝʔδͷબఆ ‣ ϘτϧωοΫʢࢷ๱͕͍ͭͯΔՕॴʣΛಛఆ͢Δ ‣ ΞϓϦέʔγϣϯΛখ͘͢͞Δ

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ϨΠϠʔ਺ΛݮΒ͢ ‣ DockerΠϝʔδ͸εςʔδຖʹϨΠϠʔΛੜ੒͢ ΔʢϨΠϠʔߏ଄ʣ ‣ ϨΠϠʔࣗ਎΋ΠϝʔδͳͷͰɺϨΠϠʔ਺ΛݮΒ ͤ͹αΠζ΋ݮΔ

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36/ΛνΣʔϯ͢Δ 36/FDIPEFCIUUQQQBMBVODIQBEOFUOHJOYTUBCMFVCVOUVUSVTUZNBJOa FUDBQUTPVSDFTMJTUEOHJOYTUBCMFMJTUa BQULFZBEWLFZTFSWFSLFZTFSWFSVCVOUVDPNSFDWLFZT$&&$a BQUHFUVQEBUFZa BQUHFUJOTUBMMZOHJOYFYUSBTa BQUHFUJOTUBMMZPQFOTTMa BQUHFUJOTUBMMZHFPJQEBUBCBTFa

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࢈ۀഇغ෺Λద੾ʹॲཧ͢Δ ‣ ࢈ۀഇغ෺ʹdocker build࣌ʹੜͨ͡ɺΞϓϦέʔ γϣϯ࣮ߦʹ͸ෆཁͳπʔϧ΍ϑΝΠϧ ‣ yum΍apt-getͷΰϛ ‣ Ϗϧυʹ࢖༻ͨ͠ιʔε ‣ gitͰ͢Β࢈ۀഇغ෺ ‣ ੒Ռ෺͚ͩ࢒͢͜ͱΛҙࣝ͢Δ

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ϘϦϡʔϜϚ΢ϯτΛ׆༻͢Δ ‣ ϗετʹඞཁͳσΟϨΫτϦΛ഑ஔ͠ɺίϯςφʹ Ϛ΢ϯτ͢Δ͜ͱͰΠϝʔδͷαΠζΛ࡟ݮ͢Δ ‣ ࡟ݮςΫχοΫͱͯ͠͸༗ޮ ‣ ϗετʹґଘ͢ΔΑ͏ʹͳΔͨΊɺϙʔλϏϦςΟ ͸མͪΔ

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%PDLFS)VC

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%PDLFS)VC ‣ DockerΠϝʔδͷGitHubΈ͍ͨͳ΋Μ ‣ ཉ͍͠΋ͷ͸େ఍खʹೖΔ ‣ ༷ʑͳϓϩμΫτͷެࣜΠϝʔδ͕ଟ͘ϗετ͞Ε ͍ͯΔ ‣ ීஈԿؾͳ͘͢Δdocker pullͰ͸ɺ͔͜͜ΒΠϝʔ δΛμ΢ϯϩʔυ͢Δ

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ΠϝʔδͷαΠζΛ֬ೝͰ͖Δ

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ެࣜΠϝʔδΛ࢖͏΂͖͔ʁ ‣ όʔδϣϯ΋๛෋Ͱ඼࣭తʹ͸ܭࢉͰ͖Δ͕ɾɾɾ ‣ ΠϝʔδͷαΠζ͸ඞͣ͠΋࠷దԽ͞Ε͍ͯΔͱ͸ ݶΒͳ͍ͷͰαΠζ֬ೝॏཁ ‣ ϝδϟʔͲ͜Ζ͸ubuntu΍debianϕʔε͕ଟ͍ ‣ Dockerﬁleͷϊ΢ϋ΢͚ͩ௖͍ͯɺϕʔεΠϝʔδ ͚ͩม͑Δͷ΋બ୒ࢶ

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TDSBUDI ‣ ͓ͦΒ͘ݱଘ࠷খͷDockerΠϝʔδ ‣ sh΋ls΋ͳ͍ ‣ ࣮͸amazon/amazon-ecs-agent(9MB)ͷϕʔε ‣ ඞཁͳ΋ͷ͸શ෦ηϧϑαʔϏε

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#VTZCPY ‣ ௒ܰྔͰΠϝʔδ͸600KBʙ2MB ‣ ݩ͸૊ΈࠐΈܥLinuxͷσϑΝΫτͩͬͨ ‣ γΣϧ͸ash ‣ ѻ͍͸͔ͳΓ೉͍͠ʢதͰϏϧυ͠Α͏ͱࢥ͏ͳʣ ‣ goͷ࣮ߦϑΝΠϧΛCOPY͘Β͍͕ؔͷࢁ

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"MQJOF-JOVY ‣ Πϝʔδ͸2MB ‣ ࣮͸Busyboxϕʔε ‣ APKͱ͍͏ύοέʔδ؅ཧγεςϜ͕͋ΔͷͰɺ BusyboxΑΓѻ͍΍͍͢

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"1,Ͱ͕Μ͹ͬͯΔྫ 36/BQLVQEBUFBEEPQFOTTMEFWQDSFEFW[MJCEFWXHFUCVJMECBTFa NLEJSQUNQTSDa DEUNQTSDa XHFUIUUQOHJOYPSHEPXOMPBEOHJOYUBSH[a UBS[YWGOHJOYUBSH[UBSH[a DEUNQTSDOHJOYUBSH[a DPOpHVSFa XJUIIUUQ@TTM@NPEVMFa XJUIIUUQ@H[JQ@TUBUJD@NPEVMFa QSFpYFUDOHJOYa IUUQMPHQBUIWBSMPHOHJOYBDDFTTMPHa FSSPSMPHQBUIWBSMPHOHJOYFSSPSMPHa TCJOQBUIVTSMPDBMTCJOOHJOYa NBLFa NBLFJOTUBMMa BQLEFMCVJMECBTFa SNSGUNQTSDa SNSGWBSDBDIFBQL

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"MQJOF೿ੜओཁΠϝʔδ ‣ anapsix/alpine-javaʢ໿50MBʣ ‣ cwt114/alpine-nodeʢ໿15MBʣ ‣ frolvlad/alpine-rubyʢ໿10MBʣ ‣ frolvlad/alpine-goʢ໿50MBʣ ‣ ಉ͡Α͏ͳͷΰϩΰϩస͕ͬͯΔ

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ࠓͷͱ͜Ζͷ"MQJOFॴײ ‣ ཪͰຊ൪౤ೖͷػӡΛ࢕ͬͯΔʢλΠϛϯά࣍ୈʣ ‣ nginx͕150MB→20MB͘Β͍ ‣ ฏۉ80%͘Β͍ͷ࡟ݮ͕ظ଴Ͱ͖Δ ‣ Web/APIͷECS Taskʢίϯςφ4छʣͰ200- 300MB͘Β͍ɺ1෼͘Β͍Ͱpull+runͰ͖Δ

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ܰ͞ͱͷτϨʔυΦϑ ‣ Dockerﬁle࡞Γ͕৬ਓܳʹͳΓ͕ͪ ‣ AlpineͷϦϙδτϦʹ͋Δύοέʔδͷόʔδϣϯ ͕ͦΕ΄Ͳ৽઱Ͱ͸ͳ͍ ‣ ࠷৽൛ͷϛυϧ΢ΣΞΛೖΕΔͷʹɺιʔείϯύ Πϧ͔Β࢝ΊͨΓ͢Δඞཁ͕͋Δ

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*NBHF-BZFSJP ‣ https://imagelayers.io ‣ DockerΠϝʔδͷϨΠϠʔΛՄࢹԽͯ͘͠ΕΔ αʔϏε ‣ DockerHub࿈ܞ ‣ ଠ͍ՕॴΛҰൃͰ਍அͯ͘͠ΕΔ

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%PDLFS)VCͱ࿈ܞͰ͖Δ

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ͲͷϨΠϠʔʹ ࢷ๱͕͍ͭͯΔ͔ Ұ໨ྎવ

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ಠࣗϨδετϦͰ࢖͑Δʁ ‣ GitHubͱDockerHubʹެ։͞ΕͯΔ ‣ centurylink/imagelayers-api ‣ centurylink/imagelayers-ui ‣ ϨδετϦΛࠩ͠ସ͑ΒΕΔ࢓૊Έʹͳͬͯͳ͍ ‣ Registry(V1)લఏͷ໛༷ ‣ forkͯͪ͠ΐͬͱؤுΕ͹ɾɾɾ

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ΞϓϦέʔγϣϯΛখ͘͢͞Δ ‣ ίϯςφ࣌୅Ͱ͸αΠζͷখ͞͞΋໰ΘΕΔ ‣ Dockerܳਓʹ͸֤ݴޠͷϏϧυπʔϧͷ஌ࣝ΋໰ ΘΕΔ ‣ Node: npm ‣ Java/Scala: Maven, Gradle, sbt ‣ Go: godep, glide

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ΞϓϦέʔγϣϯϨϕϧͰͷݮྔ ‣ ෆཁϞδϡʔϧͷ࡟আ ‣ ෆཁͳґଘϥΠϒϥϦͷ࡟আɺϥΠϒϥϦͷείʔ ϓͷݟ௚͠ ‣ ↑ͷͨΊͷϦϑΝΫλϦϯά ‣ ੩తϑΝΠϧ౳ɺ֎෦ʹग़ͤͦ͏ͳϦιʔεͷબผ

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%PDLFS༗ࣝऀ͚ͩͰ͸੒ޭ͠ͳ͍ ‣ ίϯςφϕʔεͰӡ༻͢Δ͚ͩͰ͋Ε͹ɺDocker ༗ࣝऀ͚ͩͰͳΜͱ͔ͳΔ͕ɾɾɾ ‣ ReactͷαʔόαΠυϨϯμϦϯά౳ʑɺϑϩϯτ دΓͷྖҬͰͷཧղΛಘΔ͜ͱ͕ॏཁ ‣ ߴ͍ϨϕϧͰͷӡ༻ʹ͸ɺDocker༗ࣝऀʹٻΊΒ ΕΔٕज़ྖҬ͸࣮͸޿͍

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·ͱΊ ‣ ॏ͗͢ΔΠϝʔδ͸ӡ༻ͷোนʹͳΔ ‣ ϙʔλϏϦςΟͱɺܰ͞Λ݉Ͷඋ͑ͯͦ͜ྑ͍ DockerΠϝʔδ ‣ ެࣜΠϝʔδա৴͢Δͳ ‣ Alpine(ɾ㱼ɾ)ŘŘŮ!! ‣ ΞϓϦͷστοΫε΋๨Εͣʹ