OSSから理解するEKSとそのエコシステムについて / Understanding EKS and its ecosystem from OSS perspective

by Kohei Ota

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044͔Βཧղ͢Δ&,4ͱ  ͦͷΤίγεςϜʹ͍ͭͯ +"846(ίϯςφࢧ෦ 1SFTFOUFECZ!@JOEVDUPS@

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ࣗݾ঺հ w ଠాߤฏ !@JOEVDUPS@ !JOEVDUPS w %PDLFS.FFUVQ5PLZP0SHBOJ[FS w $MPVE/BUJWF%BZT5PLZP0SHBOJ[FS w *OGSBTUSVDUVSF&OHJOFFS .-0QT5FBN!;0;05FDIOPMPHJFT *OD w ,VCFSOFUFTྺ͸໿೥

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ʊਓਓਓਓਓਓਓਓਓਓਓਓʊ ʼɹ׬શʹཧղͨ͠ਓ޲͚ɹʻ ʉ:?:?:?:?:?:?:?:?:?:?:ʉ

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lࠓճͷηογϣϯͰ͸ɺ&,4ͷத৺ʹ͋Δ044 ʮ,VCFSOFUFTʯʹ͍ͭͯɺ&,4ͷ؍఺͔Βཧղ͓ͯ͘͠΂͖ ϙΠϯτ΍ɺ044ͱͯ͠&,4΍ίϯςφΤίγεςϜΛࢧ͑Δ  ϓϩδΣΫτʹ͍ͭͯ۷ΓԼ͛ͭͭɺ&,4ͷશମ૾ʹ͍ͭͯ ୳ͬͯΈΑ͏ͱࢥ͍·͢ɻz

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ࠓ೔࿩͞ͳ͍͜ͱ w ,VCFSOFUFTJTԿ w &,4ͷجຊతͳಈ࡞ͱ͔࢖͍ํ w ӡ༻ͷ࿩΍ɺࣾ಺ͷಛఆͷϓϩμΫτͷ࿩

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ࠓ೔࿩͢͜ͱ w ,VCFSOFUFTͷઃܭࢥ૝ͱɺ"84ͱͷ࿈ܞͷ࢓૊Έ w &,4ϢʔβʔͱؔΘΓͷ͋Δɺ,VCFSOFUFTपลͷ044 w ίϛϡχςΟͱͷؔΘΓํ w ͓஌Βͤ

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,VCFSOFUFTͷઃܭࢥ૝

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཈͓͑ͯ͘΂͖,VCFSOFUFTͷಛ௃ w એݴతͳߏ੒؅ཧ w ίϯτϩʔϥʔΛத৺ͱͨ͠ߴ͍֦ுੑ w ίϯςφΛجͱͨܰ͠ྔɺॊೈɺߴ଎ͳεέʔϦϯά

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཈͓͑ͯ͘΂͖,VCFSOFUFTͷಛ௃ w એݴతͳߏ੒؅ཧ w ίϯτϩʔϥʔΛத৺ͱͨ͠ߴ͍֦ுੑˡࠓ೔ͷண໨ϙΠϯτ w ίϯςφΛجͱͨܰ͠ྔɺॊೈɺߴ଎ͳεέʔϦϯά

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LVCFBQJTFSWFS LVCFDUM FUDE LVCFTDIFEVMFS LVCFDPOUSPMMFS NBOBHFS ΫϥΠΞϯτπʔϧ εςʔτ؅ཧ ͢΂ͯͷத৺ ίϯςφͷ഑ஔ໾ ֤Ϧιʔεͷ࡞੒ɾ࡟আ LVCFDMPVE DPOUSPMMFSNBOBHFS Ϋϥ΢υϦιʔεͷ  ࡞੒ɾ࡟আ SFDPODJMFMPPQ

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IUUQTLVCFSOFUFTJPKBEPDTUBTLTBENJOJTUFSDMVTUFSSVOOJOHDMPVEDPOUSPMMFS lcloud-controller-manager͸ɺDMPVEQSPWJEFS*OUFSGBDFΛຬͨ͢೚ҙͷ Ϋϥ΢υϓϩόΠμʔͱ઀ଓͰ͖·͢ɻ தུ   ͢΂ͯͷΫϥ΢υίϯτϩʔϥʔϚωʔδϟʔ͸TJHϦʔυ·ͨ͸Ϋϥ΢υϕϯ μʔ͕؅ཧ͢Δ,VCFSOFUFTͷίΞϓϩδΣΫτͷ֎Ͱ։ൃ͞ΕΔ༧ఆͰ͢ɻz DMPVEDPOUSPMMFSNBOBHFS

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DMPVEDPOUSPMMFSNBOBHFS w ,VCFSOFUFTͱ֤ύϒϦοΫΫϥ΢υͷ"1*Λܨ͍Ͱ͘ΕΔதܧ໾ w ,VCFSOFUFTͷίϯτϩʔϥʔͱͯ͠ɺҰఆִؒͰʮ,VCFSOFUFT্Ͱ࢖ ͍͍ͨΫϥ΢υͷϦιʔεʯͱʮ"84্ʹ࣮ࡍʹଘࡏ͢ΔϦιʔεʯͷ  ੔߹ੑΛऔͬͯ͘ΕΔ

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DDNͷ"84࣮૷͕  DMPVEQSPWJEFSBXT

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IUUQTHJUIVCDPNLVCFSOFUFTDMPVEQSPWJEFSBXT l5IF"84DMPVEQSPWJEFSQSPWJEFTUIFJOUFSGBDFCFUXFFOB ,VCFSOFUFTDMVTUFSBOE"84TFSWJDF"1*T5IJTQSPKFDUBMMPXTB ,VCFSOFUFTDMVTUFSUPQSPWJTJPO NPOJUPSBOESFNPWF"84 SFTPVSDFTOFDFTTBSZGPSPQFSBUJPOPGUIFDMVTUFSz DMPVEQSPWJEFSBXT

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Θ͔Γ΍͍͢ར༻ྫ w 4FSWJDFUZQF-PBE#BMBODFSΛ&,4্Ͱ࡞੒͢Δͱ಺෦Ͱ DMPVEQSPWJEFSBXT͕࡞༻ͯ͠&-# $-#/-# ͕࡞੒͞ΕΔ LVCFDUM ˞͜͜ͷ࣮૷͸  ৄࡉ·Ͱ೺Ѳͯ͠ͳ͍ $3&"5&ཁٻ 3FDPODJMF-PPQͰ  εςʔτΛऔಘ TWD࡞੒ DDNܦ༝Ͱ  "84ͷ"1*Λୟ͍ͯ&-#࡞੒

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,VCFSOFUFT &,4 ͷࡶͳਤ 71$ "84ͷ  ίϯϙʔωϯτ &$ &$ & / * & / * "84͕؅ཧͯ͘͠ΕΔൣғ  ࡢ೔ͪΐ͏Ͳ͓஋ஈ͕Լ͕͓ͬͨ஌Β͕ͤग़·ͨ͠Ͷʂ

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ͪͳΈʹ'BSHBUFͩͱ͜Μͳײ͡ 71$ "84ͷ  ίϯϙʔωϯτ 'BSHBUF 'BSHBUF

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ͪͳΈʹ'BSHBUFͩͱ͜Μͳײ͡ 71$ "84ͷ  ίϯϙʔωϯτ 'BSHBUF 'BSHBUF ϛϥΫϧ⭐τϦόʔυ͞Μͷൃදָ͕͠Έ

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,VCFSOFUFTͱ"84ͷ࿈ܞ ωοτϫʔΫฤ

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,VCFSOFUFTʹ͓͚ΔωοτϫʔΫ w ,VCFSOFUFTΫϥελʔʹ͸େ͖͘෼͚ͯͭͷωοτϫʔΫ͕͋Δ w 1PEͷωοτϫʔΫ w 4FSWJDFͷωοτϫʔΫ w /PEFͷωοτϫʔΫ

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© ZOZO echnologies, Inc. 51 Pod A Pod B Pod C Pod A Pod C Pod D Pod B Pod C Pod D Node 1 Node 2 Node 3 Node Network Pod Network Service A Service C Ingress for Service A & C Static IP パブリッククラウドで L7ロードバランサで実装されていることが多いパブリッククラウドで L4ロードバランサで実装されていることが多い ※簡易的 & 論理的な図なで実際構成と違います  Service D (ClusterIP)

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"84ͷωοτϫʔΫͱ͍͑͹ w 71$΍ҎԼͷϦιʔεΛத৺ͱͨ͠ߏ੒ w αϒωοτ w ωοτϫʔΫ"$- w ηΩϡϦςΟάϧʔϓ w ֤छήʔτ΢ΣΠ w &/*

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"84ͷωοτϫʔΫͱ͍͑͹ w 71$΍ҎԼͷϦιʔεΛத৺ͱͨ͠ߏ੒ w αϒωοτ w ωοτϫʔΫ"$- w ηΩϡϦςΟάϧʔϓ w ֤छήʔτ΢ΣΠ w &/* ,VCFSOFUFTͱ͸શવωοτϫʔΫͷ֓೦͕ҧ͏

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ͭͷҧ͏ੈքΛ  ܨ͍Ͱ͋͛Δඞཁ͕͋Γ·͢Ͷʁ

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ʊਓਓਓਓਓਓਓਓਓਓਓਓਓਓਓਓਓਓਓਓਓʊ ʼɹίϯςφωοτϫʔΫΠϯλʔϑΣʔεʂɹʻ ʉ:?:?:?:?:?:?:?:?:?:?:?:?:?:?:?:?:?:?:?:ʉ

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$/* $POUBJOFS/FUXPSL*OUFSGBDF w ,VCFSOFUFT ݫີʹ͸ίϯςφ ͷωοτϫʔΫΛఆٛ͢Δ࢓༷ w "84࣮૷͸IUUQTHJUIVCDPNBXTBNB[POWQDDOJLT w 71$ͷੈքͱ,VCFSOFUFTͷωοτϫʔΫͷੈքΛͭͳ͍Ͱ͍Δ w ࣮͸&$4΋$/*Λ࢖͍ͬͯΔΒ͍͠ ৄ͘͠͸஌Βͳ͍ w ΦϯϓϨͰ͸JQUBCMFT OGUBCMFT ΍#(1Λ࢖࣮ͬͯ૷͞Εͨ$/*Λ࢖͏

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,VCFSOFUFTͱ"84ͷ࿈ܞ ετϨʔδฤ

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,VCFSOFUFTʹ͓͚ΔετϨʔδ w ,VCFSOFUFTʹ͸େ͖͘෼͚ͯͭͷετϨʔδؔ࿈Ϧιʔε͕͋Δ w 4UPSBHF$MBTT w 1FSTJTUFOU7PMVNF w 1FSTJTUFOU7PMVNF$MBJN

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"84ʹ͓͚ΔετϨʔδ w "84Ͱ&$ͳͲͷϫʔΫϩʔυʹΞλονͰ͖ΔετϨʔδͱݴ͑͹ w w &'4 w '4Y 8JOEPXTϑΝΠϧαʔόʔͷ΍ͭ

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·ͨͭͷҧ͏ੈքΛ  ܨ͍Ͱ͋͛Δඞཁ͕͋Γ·͢Ͷʁ

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ͦΖͦΖ෼͔͖ͬͯ·͔ͨ͠ʁ

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ʊਓਓਓਓਓਓਓਓਓਓਓਓਓਓਓਓਓਓਓਓਓʊ ʼɹίϯςφετϨʔδΠϯλʔϑΣʔεʂɹʻ ʉ:?:?:?:?:?:?:?:?:?:?:?:?:?:?:?:?:?:?:?:ʉ

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$4* $POUBJOFS4UPSBHF*OUFSGBDF w ,VCFSOFUFTͷετϨʔδΛఆٛ͢Δ࢓༷ w "84࣮૷͸ɺ&'4ɺ'4YͰ෼͔Ε͍ͯΔ  3FGLVCFSOFUFTTJHTBXTFCTDTJESJWFS w "84ͱ,VCFSOFUFTͷετϨʔδͷੈքΛͭͳ͍Ͱ͍Δ w &,4ͷ৔߹ɺ$4*͸$/*ͱҧͬͯผ్ࣗ෼Ͱ%SJWFSΛೖΕΔඞཁ͕͋Δ

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&,4ʹ͍ͭͯ͜͜ͰΘ͔Δ͜ͱ w $MPVEDPOUSPMMFSNBOBHFSΛ࢖ͬͨ"84ͱͷΠϯςάϨʔγϣϯ͕  σϑΥͰ࢖͑Δ ηοτΞοϓෆཁ w "8471$༻ͷ$/*͕σϑΥͰ࢖͑Δ ηοτΞοϓෆཁ w Ϛελʔͷ؅ཧ͸શ෦"84͕ࣗಈͰ΍ͬͯ͘ΕΔ

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&,4ͷ·ͩ෼͔ͬͯͳ͍͜ͱ w ϩάͱ͔Ͳ͏͢Δͷʁ w "-#࢖͑ͳ͍ͷʁ w "$.ͱ͔3PVUFͱ͔࢖͑ͳ͍ͷʁ w ,VCFSOFUFTͬͯԿʁʢࣗ෼Ͱௐ΂ͯωʣ

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&,4ͷ·ͩ෼͔ͬͯͳ͍͜ͱ w ϩάͱ͔Ͳ͏͢Δͷʁ w "-#࢖͑ͳ͍ͷʁ w "$.ͱ͔3PVUFͱ͔࢖͑ͳ͍ͷʁ w ,VCFSOFUFTͬͯԿʁʢࣗ෼Ͱௐ΂ͯωʣ શ෦ࣗ෼Ͱઃఆ͍Εͳ͍ͱͩΊͰ͢ʂ

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Ϣʔβʔ໨ઢͰͷ&,4ϝϦσϝ w ϝϦοτ w ඞཁ࠷௿ݶͷίϯϙʔωϯτ͔͠ೖͬͯͳ͍ w ࠷ۙ͸ಛʹ ϊʔυάϧʔϓ΍'BSHBUF͕࢖͑ΔͷͰɺ&$ͷ͓΋ΓΛ  ୆୆͠ͳͯ͘΋Α͘ͳ͖ͬͯͨ w ϑϧϚωʔδυͰ͸ͳ͍ͷͰࣗ෼Ͱ؅ཧͰ͖Δൣғ͕޿͍

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Ϣʔβʔ໨ઢͰͷ&,4ϝϦσϝ w ϝϦοτ w ඞཁ࠷௿ݶͷίϯϙʔωϯτ͔͠ೖͬͯͳ͍ w ࠷ۙ͸ಛʹ ϊʔυάϧʔϓ΍'BSHBUF͕࢖͑ΔͷͰɺ&$ͷ͓΋ΓΛ  ୆୆͠ͳͯ͘΋Α͘ͳ͖ͬͯͨ w ϑϧϚωʔδυͰ͸ͳ͍ͷͰࣗ෼Ͱ؅ཧͰ͖Δൣғ͕޿͍ ,VCFSOFUFTΛ"84Ͱಈ͔͍ͨ͠ͱ͍͏ਓʹͱͬͯ ࣗ༝౓ɾ֦ுੑ͕ߴ͘ ϚελʔΛҙࣝ͢Δ͜ͱͳ͘ݎ࿚ͳઃܭʹͳ͍ͬͯΔ

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Ϣʔβʔ໨ઢͰͷ&,4ϝϦσϝ w σϝϦοτ w ,VCFSOFUFTࣗମ͕೉͍͠ͱ͍͏໰୊͸มΘΒͳ͍ ֶशίετ w ࣗલͰೖΕͳ͍ͱ͍͚ͳ͍ίϯϙʔωϯτ͕ଟ͍

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Ϣʔβʔ໨ઢͰͷ&,4ϝϦσϝ w σϝϦοτ w ,VCFSOFUFTࣗମ͕೉͍͠ͱ͍͏໰୊͸มΘΒͳ͍ ֶशίετ w ࣗલͰೖΕͳ͍ͱ͍͚ͳ͍ίϯϙʔωϯτ͕ଟ͍ˡ͜͜͸ͳΜͱ͔ͳΔ

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ͦ͏ɺFLTDUMΛ࢖͑͹Ͷʂ

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FLTDUM w 8FBWFXPSLT͕ࣾग़͍ͯ͠Δ&,4ͷϥούʔπʔϧ w ڈ೥&,4ͷެࣜπʔϧʹঢ֨ʂ w େମΈΜͳ͕࢖͍ͦ͏ͳ΍ͭΛίϚϯυϥΠϯͰ͍͍ײ͡ʹදݱͰ͖Δ w ઃఆͷҾ਺Λ:".-Ͱهड़Ͱ͖ΔͷͰ*B$΋Ͱ͖Δ w %PDLFS$PNQPTFΈ͍ͨͳ࢖༻ײ

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͜Μͳ͔Μ͡ʹఆٛ͢Δ͚ͩͰ શ෦΍ͬͯ͘ΕΔ

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ͦͷଞͷ࢖༻ྫ͸ެࣜͷ  (JU)VCϦϙδτϦʹ͋Γ·͢

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FLTDUMͰղܾ͢Δ͖ͬ͞ͷٙ໰ w ϩάͱ͔ϝτϦΫεͱ͔Ͳ͏͢Δͷʁ w $MPVE8BUDIͱ͔ͷΠϯςάϨʔγϣϯ͕FLTDUMͰ༗ޮʹͰ͖Δ w "-#࢖͑ͳ͍ͷʁ w "MCJOHSFTTDPOUSPMMFS͕FLTDUMͰ༗ޮʹग़དྷΔ w "$.ͱ͔3PVUFͱ͔࢖͑ͳ͍ͷʁ w ͜ΕΒ΋FLTDUMͰ༗ޮʹͰ͖Δ

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FLTDUM͍͢͝

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FLTDUM͸࡞ͬͯऴΘΓ͡Όͳ͍ w "844%,ܦ༝Ͱ$MPVE'PSNBUJPOͷελοΫ͕ϓϩϏδϣϯ͞ΕΔ w &,4ͷΫϥελʔ΍ϊʔυ͸$MPVE'PSNBUJPOͰ࡞੒ w &,4্ͷϫʔΫϩʔυ͚ͩͰͳ͘Ϋϥελʔࣗମ΋એݴతʹ؅ཧ w ߏ੒มߋ΍࡟আʹ΋༰қʹରԠՄೳ

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FLTDUM͸࡞ͬͯऴΘΓ͡Όͳ͍ w "844%,ܦ༝Ͱ$MPVE'PSNBUJPOͷελοΫ͕ϓϩϏδϣϯ͞ΕΔ w &,4ͷΫϥελʔ΍ϊʔυ͸$MPVE'PSNBUJPOͰ࡞੒ w &,4্ͷϫʔΫϩʔυ͚ͩͰͳ͘Ϋϥελʔࣗମ΋એݴతʹ؅ཧ w ߏ੒มߋ΍࡟আʹ΋༰қʹରԠՄೳ ӡ༻ίετΛҰఆͷϨϕϧʹམͱͤΔ

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FLTDUMͷࠓޙ w &,4։ൃνʔϜΛר͖ࠐΜͩɺڧݻͳ&,4ͱͷΠϯςάϨʔγϣϯ w 8FBWFXPSLTͷఏএ͢Δ(JU0QTΛ&,4Ͱ؆୯ʹ࣮ݱ͢Δ࿮૊Έ w ಉࣾ੡ͷσϓϩΠπʔϧ"SHP'MVYΛ༻͍ͨ(JU0QTύΠϓϥΠϯߏங w ΑΓৄ͘͠͸(JU)VCͷ*TTVFΛࢀߟʹʂʂ

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FLTDUMࣗମͰ࡞ΒΕΔΫϥελʔͷ :".-ϑΝΠϧ͸%3:ʹͳ͍ͬͯͳ͍

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"84͞ΜཔΈ·ͨ͠

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&,4ʹۤ͠Ή๻ͷਤ

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,VCFSOFUFTͷ͍͍ͱ͜Ζ w ,VCFSOFUFT֎ͷϦιʔεΛ,VCFSOFUFTͰѻ͑ΔΑ͏ʹ  ߴ͍֦ுੑΛ࣋ͭΠϯλʔϑΣʔεΛఏڙ͍ͯ͠Δ w ։ൃ͕ίϛϡχςΟओମͳͷͰ։ൃͷྲྀΕ͕ݟ͑Δ w ਖ਼͘͠΢Υον͢Δ4*(͕Θ͔Ε͹ࠓޙͷಈ޲΋͔ͭΈ΍͍͢

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,VCFSOFUFTͱ"84ؔ࿈ͷ044 w 4*("84 w *"."VUIFOUJDBUPS w $/*$4*QMVHJO w FYUFSOBMEOTͳͲɺ"84͚ͩͳΒݟΔ΂͖044͸ҙ֎ͱଟ͘͸ͳ͍

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ˣ"84͕ؔΘΔ,VCFSOFUFTͷ044ˣ  IUUQTHJUIVCDPNTFBSDI RUPQJD"LTTJH BXTPSH"LVCFSOFUFTTJHTUZQF3FQPTJUPSJFT

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&,4 &$4 ։ൃνʔϜͷಈ޲Λ஌Δʹ͸  օ͞Μ͝ଘ஌ͷDPOUBJOFSSPBENBQ΋ศར  IUUQTHJUIVCDPNBXTDPOUBJOFSTSPBENBQQSPKFDUT

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ཉ͍͠ػೳ͕͋Ε͹  ؾܰʹ*TTVFཱ͍͖ͯͯ·͠ΐ͏

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·ͱΊ w &,4͸,VCFSOFUFT͕࣋ͭߴ͍֦ுੑͷԸܙʹ༬͔ͬͯ  "84্Ͱ,VCFSOFUFTΛಈ͔ͨ͢Ίʹ༷ʑͳ044Λ૊Έ߹Θ͍ͤͯΔ w FLTDUMΛ࢖͏ͱೖ໳ͷ೉қ౓͕ҰؾʹԼ͕Δ w ࠓޙͷಈ޲͸DPOUBJOFSTSPBENBQͱ4*("84ΛνΣοΫʂ w ,VCFSOFUFT೔ຊޠυΩϡϝϯτͷ຋༁͓ख఻͍ืूͯ͠·͢ র

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༨ஊ

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&,4GPS'BSHBUFBOE&$ %FTJHODPNQBSJTPO !JOEVDUPS

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4QFBLFSEFDLʹ্͕ͬͯ·͢  ΑΖ͚͠Ε͹͝ཡ͍ͩ͘͞

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࠷ޙʹ͓஌Βͤ

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