Kubernetesの ダークカナリアリリースツールを作った話

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1. Kubernetesͷ μʔΫΧφϦΞϦϦʔεπʔϧ Λ࡞ͬͨ࿩ Kubernetesษڧձ @t10471
2. μʔΫΧφϦΞϦϦʔεͱ͸ʁ • Ұ෦ͷϢʔβʹ͚ͩߜͬͯϦϦʔε͢Δͷ͕ɺ ΧφϦΞϦϦʔε • ͞Βʹ։ൃऀʹ͚ͩߜͬͯϦϦʔε͢Δͷ͕ɺ μʔΫΧφϦΞϦϦʔε • ग़య https://clonos.jp/knowledge/detail14/
3. ࡞ͬͨཧ༝ • εςʔδϯά؀ڥ͸͕͋ͬͨຊ൪؀ڥͱઃఆ ͕ҧ͏ͨΊɺϦϦʔεͯ͠੾Γ໭͢ͱ͍͏ͷ ͕Կճ͔͋ͬͨͨΊ…
4. طଘͷͰ͸μϝͩͬͨͷ͔ʁ • SpinnakerͳͲ΋ݕ౼͕ͨ͠ɺ΍Γ͍ͨ͜ͱʹ ରͯ͠େ͛ͩͬͨͨ͞ΊಠࣗͰ࡞ͬͨ • ͦͷࠒ͸Istio΋1.0Ͱ͸ͳ͔ͬͨͷͰ…
5. ࢓༷ɾલఏ • طଘͷσϓϩΠπʔϧ(shell)͕طʹଘࡏͨ͠ͷ ͰɺͦΕΛૢ࡞͢Δϥούʔ • serviceɺpodɺhpaΛ੾Γସ͑Δ • DNS͸LBͰղܾ͍ͯ͠Δ • Service͸NodePortΛࢦఆ͍ͯ͠Δ
6. ϦϦʔεલ blue ϦϦʔε service label: blue μʔΫΧφϦΞϦϦʔε service label: blue blue deployment Λ؂ࢹ
7. μʔΫΧφϦΞϦϦʔε blue ϦϦʔε service label: blue μʔΫΧφϦΞϦϦʔε service label: green blue deployment Λ؂ࢹ green greenͷpodΛ1্ཱ͚ͭͩͪ͛Δ
8. ϦϦʔε blue ϦϦʔε service label: green μʔΫΧφϦΞϦϦʔε service label: green green deployment Λ؂ࢹ green greenͷpodΛঃʑʹ૿΍͠ blue ͷpodΛঃʑʹݮΒ͢ نఆ਺ʹୡͨ͠Βgreen deployment Λ؂ࢹ͢Δ
9. ίϚϯυ • info • ݱࡏͷঢ়ଶΛݟΔ • show • σϓϩΠ͍ͨ͠deployment.yamlΛݟΔ • deployment.yaml͸ςϯϓϨʔτʹͳ͍ͬͯΔͷͰɺͦ͜Λࢦఆͨ͠؀ڥͷม ਺ͰຒΊͯ͘ΕΔ • diff • ݱࡏͷঢ়ଶͱϦϦʔε͍ͨ͠΋ͷͷࠩ෼ΛݟΔ • deploydc • μʔΫΧφϦΞϦϦʔεΛߦ͏ • diffbg • blueλάͱgreenλάͷࠩ෼ΛݟΔ • deploy • μʔΫΧφϦΞϦϦʔεΛߦͬͨํ޲ʹserviceͱhpaΛ޲͚Δpodͷ਺Λௐ੔ ͢Δ
10. ࡞ͬͨײ૝ • Kubernetesͬͯศརͩͳʔ • ͜ͷޙʹclient-goͷଘࡏΛ஌Γɺ͋ʔͱࢥͬ ͨ…
11. ͋Γ͕ͱ͏͍͟͝·ͨ͠