Argo CD で GitOps してみた

by po3rin

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"SHP$%Ͱ(JU0QTͯ͠Έͨ ,VCFSOFUFT/PWJDF5PLZP"VH CZQPSJO

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pon ( @po3rin ) ݕࡧͱ͔΍ΔσʔλΤϯδχΞɻ (PΛΑ͘ॻ͘ɻίϯςφ΋޷͖ɻ

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Introduction \

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&,4Ͱӡ༻ͯ͠Δϒϩά✌ QPSJODPN

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ϒϩάͷΞʔΩςΫνϟ✌

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Solution \

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(JU0QT͸Ϋϥ΢υωΠςΟϒͳΞϓϦͷ ܧଓతσϓϩΠΛ࣮૷͢Δํ๏ͷҰͭͰ ͢ɻΠϯϑϥετϥΫνϟΛϦϙδτϦ ಺ʹهड़͞Εͨঢ়ଶʹҰகͤ͞ΔࣗಈԽ ϓϩηεΛ࣮ߦ͠·͢ɻ 8IBU`T(JU0QT

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͜Ε͕σϓϩΠͷཧ૝ܗɻ(JU)VCʹLTͷϚχϑΣετΛมߋͯ͠QVTIͨ͠ΒɺͦΕ͕൓ө͞ΕΔɻ (JU0QT 1VTI 8BUDI4ZOD

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͜ͷΑ͏ͳ(JU0QTΛ࣮ݱ͢Δ"SHP$%ͳͲͷΦʔϓϯιʔε͕ଟ਺ଘࡏ͢Δɻ (JU0QT 1VTI 8BUDI 4ZOD

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Flux CD ͱ Argo CD ͸ɺGitOps Λ࣮ݱ͢ΔͨΊ ͷΦʔϓϯιʔεͷπʔτοϓͰ͢ɻ (JU0QT

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"SHP$%͸લ৬Ͱ࢖͓ͬͯΓɺࣗ෼Ͱ΋ ઃఆͰ͖ΔΑ͏ʹͳ͓͖͍ͬͯͨͱ͍͏ ҆௚ͳཧ༝Ͱϒϩάʹ"SHP$%Λ࠾༻ɻ "SHP$%

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"SHP$%͸(JU)VCͷϦϙδτϦΛৗʹXBUDI͠ɺݱঢ়ͱͷࠩ෼Λݕ஌͠ɺઃఆΛࣗಈ·ͨ͸खಈͰ ࠶ಉظ͠·͢ɻ͍͢͝ʂʂ "SHP$% 1VTI 8BUDI 4ZOD .BOJGFTUT3FQP

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"SHP$%ͷσϞ

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(JU0QTͰ͸"QQMJDBUJPO3FQPଆͰΠϝʔδΛϏϧυͨ͠Βͦͷ଍Ͱผ్ɺ:".-Λฤूͯ͠QVTI͢ Δඞཁ͕͋Δɻݸਓ։ൃͳͷͰճQVTI͸໘౗ɻ "SHP$% 1VTI 8BUDI 4ZOD .BOJGFTUT3FQP *NBHF "QQMJDBUJPO3FQP 1VTI

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ຊདྷ͸ZBNMͷߋ৽΋ࣗಈԽ͍ͨ͠ͱ͜ΖɻಛʹݸਓϒϩάͷΑ͏ͳ΋ͷͳΒঘߋɻ࣮ࡍ"SHP$%ʹ ΊͬͪΌཁ๬ग़ͯΔɻ͔͠͠ɺ"SHP$%͸ͦΕ͸(JU0QTͷൣғ֎ͱͯ͋͠·Γ৐Γؾ͡Όͳ͔ͬͨɻ "SHP$% 1VTI 8BUDI 4ZOD .BOJGFTUT3FQP *NBHF ͍͍ײ͡ʹ.BOJGFTUΛ ࣗಈͰฤू͍ͨ͠ "QQMJDBUJPO3FQP

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ͦ΋ͦ΋"QQMJDBUJPO3FQPͱ.BOJGFTUT3FQPΛ෼͚Δඞཁ͸͋Δͷ͔ɻ͜Ε͸"SHPͷެࣜϒϩ άͰݴٴ͞Ε͍ͯΔ(JU0QT#FTU1SBDUJDFTͷҰͭɻ "SHP$% IUUQTCMPHBSHPQSPKJPHJUPQTCFTUQSBDUJDFTEDCDCF⒎

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"SHP$%*NBHF6QEBUFS "SHP$%Λઃఆͨ࣍͠ͷि͘Β͍ʹNBOJGFTUͷJNBHFߋ৽͢Δ΍ͭͰ͖ͯͨXXX ·ͩϓϨϦϦʔεͳͷͰຊ൪ʹ͸࢖͑ͳ͍ͷͰࠓޙʹظ଴ɻ

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·ͱΊΔͱ"QQMJDBUJPO3FQPͷ$*Ͱ.BOJGFTUT3FQPͷ಺༰Λमਖ਼ͯ͠QVTI͍ͨ͠ɻͯ͞Ͳ͏ ͢Δ͔ɻɻૂͬͨZBNMͷҰ෦Λ؆୯ʹमਖ਼Ͱ͖Δπʔϧ͕ZR ZR 1VTI 8BUDI 4ZOD .BOJGFTUT3FQP *NBHF ͍͍ײ͡ʹ.BOJGFTUΛ ࣗಈͰฤू͍ͨ͠ "QQMJDBUJPO3FQP

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ZR͸ܰྔͰϙʔλϒϧͳίϚϯυϥΠϯ:".-ϓϩηοαZBNMϑΝΠϧಛԽͷKR·ͨ͸TFEʹͳΔ͜ ͱΛ໨ඪͱ͍ͯ͠Δɻ ZR

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ZR͸ͰZBNMͷૂͬͨϑΟʔϧυΛ؆୯ʹฤ ूͰ͖Δɻ͜ΕΛ(JU)VC"DUJPOTͰߦͳͬ ͯɺฤूͨ͠Βͦͷ··QVTI͢Δɻ ZR

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ZRΛ࢖ͬͯ"QQMJDBUJPO3FQP΁ͷQVTI͔ΒσϓϩΠ·ͰͷࣗಈԽ͕׬੒ͨ͠ɻ ZR 1VTI 8BUDI 4ZOD .BOJGFTUT3FQP *NBHF ZRͰ.BOJGFTUΛ ฤू͍ͨ͠ "QQMJDBUJPO3FQP

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Appendix \

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"SHP$%%FDMBSBUJWF4FUVQ "SHP$%ͷઃఆ͸એݴతʹͰ͖ΔɻݸਓϒϩάͰ͸Ҡߦதɻ

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(JU0QTͷจ຺Ͱ͸σϓϩΠ͸͍ΘΏΔ1VMMܕWT1VTIܕͷٞ࿦ʹͳΔɻ1VMMܕ͸ݖݶ෼཭΍ɺෳࡶੑഉআʹޮ͍ͯ͘Δɻ ɾ1VMMܕͷํ͸ൿີ৘ใΛ֎෦ʹ౉ͣ͞ʹ,VCFSOFUFT಺Ͱ׬݁Ͱ͖Δɻ ɾ1VMMܕʹ͢Δͱσʔλ֨ೲϦϙδτϦ͕Πϯϑϥʹґଘ͠ͳ͘ͳΔɻ 1VTIܕWT1VMMܕ 1VTI 'FUDI 4ZOD 4ZOD 1VMMܕ 1VTIܕ )PDL LT΁ͷ 83*5&͕ඞཁ ϦϙδτϦ΁ͷ 3&"%ݖݶ͚ͩ 1VTI

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YDSZQUPTTIJTTVF 44)ΩʔʹΑΔೝূ(PͷYDSZQUPTTIύοέʔδʹ͋Δ1BSTF1SJWBUF,FZ8JUI1BTTQISBTF ؔ਺Ͱ͕͢ɺ"SHP$%͕࢖͍ͬͯΔόʔδϣϯ͸0QFO44)ܗࣜͷύεϑϨʔζ෇͖ൿີ伴ʹର Ԡ͓ͯ͠ΒͣΤϥʔʹͳΔɻɻ https://github.com/argoproj/argo-cd/issues/1894#issuecomment-667014961

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Conclusion \

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(JU0QT͸Ϋϥ΢υωΠςΟϒͳΞϓϦͷܧଓతσϓϩΠΛ࣮૷͢Δํ๏ͷҰͭɻ (JU0QTΛ࣮ݱ͢ΔͨΊʹ͸"SHP$%΍'MVY$%Λ࢖͏ͷ͕ศརɻ ίϯςφΠϝʔδͷϏϧυ͔ΒϦϦʔε·Ͱ͍ͨ͠ͳΒZRͱ͔࢖͏ɻ 'MVY$%͸ͦ͏͍͏ػೳ͕͋Δɻ"SHP$%͸ϕʔλ൛Ͱ͍ۙػೳ͕͋Δɻ

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໌೔΋ൃද͢ΔXXX

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"SHP$%Ͱ(JU0QTͯ͠Έͨ ,VCFSOFUFT/PWJDF5PLZP"VH CZQPSJO