こんなこともあろうかと、サーバーは予め増やして置いた〜アクセス頻度予測を用いてサーバーを自動増減する「計画的スケーリング」その後〜 / LINE Developer Meetup #32

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∁ੴྒ / GMO Pepabo, Inc. 2018-04-24 LINE Developer Meetup #32 ʙΞΫηεස౓༧ଌΛ༻͍ͯαʔόʔΛࣗಈ૿ݮ͢ΔʮܭըతεέʔϦϯάʯͦͷޙʙ ͜Μͳ͜ͱ΋͋Ζ͏͔ͱɺ αʔόʔ͸༧Ί૿΍ͯ͠ஔ͍ͨ

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ιϑτ΢ΣΞΤϯδχΞ ∁ੴ ྒ / @r_takaishi https://repl.info/ TAKAISHI Ryo ٕज़෦ ٕज़ج൫νʔϜ

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ΩϟύγςΟϓϥϯχϯά

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μ΢ϯ͠ͳ͍ෛՙΛ͞͹͘ ແବͳ͘ద੾ͳϦιʔεΛ഑ஔ͢Δ

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!5 • ϐʔΫλΠϜʹ͋Θͤͯ୆਺Λܾఆ • ϝσΟΞ࿐ग़ɾΩϟϯϖʔϯ࣌ʹ͸ݸผʹ૿ઃ ΞϓϦέʔγϣϯαʔόʔͷ৔߹@minne

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!6 ϐʔΫλΠϜʹ͋Θͤͯ୆਺Λઃఆ͢Δ৔߹ ࣌ؒ ΞΫηεස౓ʢਖ਼نԽࡁʣ αʔόʔ୆਺

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ΞΫηε͕গͳ͍࣌ؒ͸αʔόʔ ୆਺Λ͍͍ײ͡ʹݮΒ͍ͨ͠

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ΞΫηε͕ଟ͍࣌ؒ͸ͦΕΛࡹ͚ ΔΑ͏ͳαʔόʔ୆਺ʹ͍ͨ͠

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ෛՙʹԠͯ͡ Φʔτεέʔϧ͢Ε͹͍͍

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!10 • ϐʔΫ࣌ͷෛՙ͸ॠؒతʹൃੜ͢ΔͨΊɺݕ஌ͯ͠ ͔ΒͷεέʔϧΞ΢τͰ͸ؒʹ߹Θͳ͍ • αʔόʔͷىಈʙαʔϏεΠϯʹ͔͔ΔλΠϜϥά • Ծ૝Ϛγϯͷىಈ • ىಈ࣌ʹ࠷৽ͷΞϓϦέʔγϣϯίʔυΛσϓϩΠ ෛՙΛݕ஌ͯ͠Φʔτεέʔϧ͢Δख๏

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ͳ͔ͳ͔೉͍͠ʜ

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ͱࢥ͍ͬͯͨΒɺ೥ͷ಄ʹ

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͍͍΋ͷ͋ΔΑ…ʂ

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ࡾ୐ݚڀॴһʹΑΔ ఏҊख๏

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ΞΫηεස౓༧ଌΛ༻͍ͨ ܭըతεέʔϦϯά

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͜Ε·Ͱ஝ੵ͖ͯͨ͠ ΞΫηεϩάΛ࢖ͬͯ ະདྷͷΞΫηεස౓Λ༧ଌ͢Δ

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ࣄલʹΞΫηεස౓͕Θ͔Ε͹ɺ ඞཁͳαʔόʔ୆਺΋Θ͔Δ

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• minneͰ͸ΞΫηεϩάɾߦಈϩάΛอଘ͍ͯ͠Δ • ྫ͑͹աڈ1ϲ݄ؒɺ1࣌ؒ୯ҐͷΞΫηεස౓͕Θ͔Δ • ͜ͷ࣌ܥྻσʔλΛ༻͍ͯɺະདྷͷΞΫηεස౓Λ༧ଌ͢Δ • ࣄલʹΞΫηεස౓͕Θ͔Ε͹ɺॲཧՄೳͳ୆਺ʹ૿ݮͰ͖Δ !18 Ͳ͏͍͏΋ͷ͔ͬ͘͟Γ

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• minneͰ͸ΞΫηεϩάɾߦಈϩάΛอଘ͍ͯ͠Δ • ྫ͑͹աڈ1ϲ݄ؒɺ1࣌ؒ୯ҐͷΞΫηεස౓͕Θ͔Δ • ͜ͷ࣌ܥྻσʔλΛ༻͍ͯɺະདྷͷΞΫηεස౓Λ༧ଌ͢Δ • ࣄલʹΞΫηεස౓͕Θ͔Ε͹ɺॲཧՄೳͳ୆਺ʹ૿ݮͰ͖Δ !19 Ͳ͏͍͏΋ͷ͔ͬ͘͟Γ ࠓ೔࿩͢ͷ͸ɺಛʹ͜ͷ෦෼

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!20 ϩάऩू෦෼͕ؾʹͳΔํ͸εϥΠυΛνΣοΫʂ IUUQTTQFBLFSEFDLDPNNPOPDISPNFHBOFQFQBCPMPHJOGSBTUSVDUVSFCJHGPPU

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!21 ༧ଌʹ͍ͭͯؾʹͳΔํ͸ϖύݚϒϩάΛνΣοΫʂ IUUQTSBOEQFQBCPDPNBSUJDMFJPUNJZBLFZ

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ͱ͍͏Θ͚Ͱ ࡞͍ͬͯͧ͘

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!23 • ΞΫηεස౓༧ଌ܅ʢϖύݚʣ • αʔόʔ୆਺ܭࢉɾ૿ݮ܅ʢminneʣ ඞཁͳίϯϙʔωϯτ͸Կ͔ʁ

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!24 ͜Ε͕ܭըతεέʔϦϯάͷߏ੒ͩʂ cron Redis ΞΫηεස౓༧ଌ܅ (Sidekiq) IaaS API Endpoint ༧ଌΞΫηε਺ͷऔಘ ఆظ࣮ߦ αʔόʔ୆਺ܭࢉɾ૿ݮ܅ (hakata) ඞཁαʔόʔ୆਺Λܭࢉɾ૿ݮ ༧૝ΞΫηεස౓Λอଘ

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!25 ܭըతεέʔϦϯάͷྲྀΕ ࣌ ࣌ ࣌ ࣌ ຖ೔0࣌ա͗ɿ 1೔෼ͷΞΫηεස౓Λ༧ଌ͢ΔΑ ຖ࣌40෼࣌ա͗ɿ ࣍ͷ1࣌ؒͷΞΫηεස౓༧ଌ͔Βαʔόʔ୆਺Λ૿ݮ͢ΔΑ

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• ༧ଌΞΫηεස౓(ϦΫΤετ਺/࣌)Λϕʔεͱ͢Δ • αʔόʔ͕ৗʹҰఆͷεϧʔϓοτ(rpm)Λอͭ୆਺Λ໨ࢦ͢ • εϧʔϓοτظ଴஋(rpm)͸NewRelicͷϝτϦΫε͔Βࢉग़ !26 ඞཁαʔόʔ਺ͷܭࢉ ඞཁ୆਺༧ଌΞΫηεස౓εϧʔϓοτظ଴஋

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!27 • ༧ଌΞΫηεස౓ɿ60,000 ϦΫΤετ/࣌ • εϧʔϓοτظ଴஋ɿ1,000 rpm αʔόʔ୆਺ܭࢉͷྫ ඞཁ୆਺༧ଌΞΫηεස౓εϧʔϓοτظ଴஋

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• ʮΞΫηεස౓༧ଌʯͱʮϦιʔεྔܭࢉɾ૿ݮʯͷ2͕ͭඞཁ • ΞΫηεස౓༧ଌ͸1೔ʹ1ճ • Ϧιʔε૿ݮͷλΠϛϯά͸1࣌ؒʹ1ճ • Ϧιʔεྔܭࢉ͸༧ଌ஋ͱεϧʔϓοτظ଴஋Λݩʹܭࢉ !28 ܭըతεέʔϦϯάͷઃܭ·ͱΊ

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ධՁɾ՝୊

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!30 ΞϓϦέʔγϣϯαʔόʔͷCPU࢖༻཰ ܭըతεέʔϧɿແޮ ܭըతεέʔϧɿ༗ޮ

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!31 ΞϓϦέʔγϣϯαʔόʔ୆਺ͷભҠ ܭըతεέʔϧɿແޮ ܭըతεέʔϧɿ༗ޮ

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݁ߏ͍͍͔Μ͡ʹಈ͍͕ͨʜ

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͍͔ͭ͘՝୊΋

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!34 • ༧ଌͷਫ਼౓௿ԼʹΑΔϦιʔεෆ଍ • ༧ଌʹݱΕͳ͍ΞΫηε΁ͷରԠ • εέʔϧΞ΢τ͕ؒʹ߹Θͳ͍έʔε ՝୊

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͜͜·Ͱ͸೥ͷ࿩

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ผ࡞ۀͷͨΊɺ Ұ࣌తʹఀࢭ͍ͯͨ͠

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݄ࠒ͔Βվળʹணख

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εέʔϧΞ΢τ ͕ؒʹ߹Θͳ͍໰୊

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!39 • αʔόʔىಈ࣌ʹΞϓϦέʔγϣϯͷίʔυΛऔಘɾ ల։͓ͯ͠ΓɺϘτϧωοΫͱͳ͍ͬͯΔ • ࠷৽Πϝʔδ ≠ ࠷৽ΞϓϦ • ΞϓϦͷϥΠϑαΠΫϧ ≠ αʔόʔͷϥΠϑαΠΫϧ ͳͥɺεέʔϧΞ΢τ͕ؒʹ߹Θͳ͍ͷ͔ʁ

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!40 ϥΠϑαΠΫϧ CentOS minimal www www build minimal image build www image image lifecycle server lifecycle install puppet apply puppet deploy minne-app launch www server www deploy minne-app terminate www server deleted release minne-app

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!41 • ࠷৽ΞϓϦ = ࠷৽ΠϝʔδΛ໨ࢦ͢ • ϦϦʔε࣌ʹΠϝʔδΛϏϧυ͠ɺ࠷৽ͷΞϓϦΛ ؚΉΑ͏ʹ͢Δ ϦϦʔε࣌ʹΠϝʔδΛϏϧυ͢Δ

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!42 • baseΠϝʔδͷϏϧυ • wwwΠϝʔδͷϏϧυ • wwwΠϝʔδͷݕࠪ • αʔόʔͱͯ͠ىಈ͢Δͷ͔ʁ • ىಈͨ͠ޙɺͪΌΜͱ֤ϓϩηε͕ಈ͍ͯΞΫηεͰ͖Δ͔ʁ ΠϝʔδϏϧυʹඞཁͳ΋ͷ͸…ʁ

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!43 ͍͍͔Μ͡ʹΠϝʔδΛϏϧυͯ͘͠ΕΔ΍ͭ hakata workﬂow - build - push - verify notify run खݩ͔Βssh࣮ͯ͠ߦ ΞϓϦͷϦϦʔε࣌ʹϏϧυ IaaCͷϦϦʔε࣌ʹϏϧυ

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࣮૷ͯ͠ɺಈ࡞Λ֬ೝ ࠷৽ΞϓϦ࠷৽Πϝʔδ✨

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ܭըతεέʔϦϯάΛ࠶Քಇͯ͠ɺ վળ͞Ε͔ͨݕূͨ͠

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ܭըతεέʔϦϯάΛ࠶Քಇͯ͠ɺ վળ͞Ε͔ͨݕূͨ͠

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!47 • ΠϝʔδͷࣗಈϏϧυʹࢥͬͨΑΓ͕͔͔࣌ؒͬͨ • ࠶Քಇ͠Α͏ͱͨ͠Β͍Ζ͍Ζಈ͔ͣbug ﬁx ࠶Քಇ͸͜ͷMeetupʹؒʹ߹Θͣ…

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ࠓޙʹ͝ظ଴͍ͩ͘͞ʂ

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·ͱΊ

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!50 • ΞΫηεස౓༧ଌΛ༻͍ɺΞΫηε͕૿͑ΔલʹΦʔ τεέʔϧ • ϖύݚͱ࿈ܞɾ෼୲͠ɺ࣮ݱ • ࢼݧӡ༻͠ɺ՝୊Λચ͍ग़ͨ͠ • ͕ɺվળ·Ͱ͸Ͱ͖ͣ… ·ͱΊ

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Α͔ͬͨ͜ͱ

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!52 • ϖύݚͱ࿈ܞ͠ɺ৽ٕज़Λ࣮ࡍͷαʔϏεʹಋೖ • Φʔτεέʔϧʹ͍ͭͯͷ஌ݟΛಘΔ͜ͱ͕Ͱ͖ͨ Α͔ͬͨ͜ͱ

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!53 • ࢓૊Έͷ൚༻Խ • ࠓճ͸IaaS্Ͱ࡞͕ͬͨɺ࢓૊Έࣗମ͸ଞͰ΋࢖͑Δ • ྫɿKubernetesͷΑ͏ͳίϯςφج൫΁ͷల։ • ༧ଌʹݱΕͳ͍ΞΫηε΁ͷରԠ • ෛՙΛτϦΨʔͱͨ͠εέʔϧΞ΢τ ࠓޙ΍͍͖͍ͬͯͨ͜ͱ

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We are hiring! ϗεςΟϯάαʔϏεͰ৽ٕज़Λ׆༻ ΢ΣϒαʔϏεͷ4JUF3FMJBCJMJUZ&OHJOFFSJOH શࣾతͳٕज़ج൫Λ͕ͬͭΓ ࣄۀΛࠩผԽͰ͖Δٕज़Λ࡞Γग़͍ͨ͠ FUDʜ