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Canary Deployments ! Move Fast, Fail Fast (and Small) Sep / 26 / 2016 1
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AboutMe @yyoshiki41 Yoshiki Nakagawa Infrastructure Engineer, pairs Division Tech » Golang » Middleware, AWS 2
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What is the canary server ? By 4028mdk09 (Own work) [CC BY-SA 3.0], via Wikimedia Commons 3
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Canary Server tl;dr σϓϩΠϓϩϏδϣχϯάΛ͍͖ͳΓ ϓϩμΫγϣϯڥͷશମͰͳ͘ɺઌ ߦͯ͠Ұ෦ʹରͯ͠ߦ͍ɺ ͜Ε͕దԠ͞ΕͨͷΛʮΧφϦΞαʔ όʯͱݺͿɻ Ұ෦ͷΫϥελʹΑΔݕূͰɺࣦഊ࣌ ͷμϝʔδΛগͳ͘͢Δߟ͑ํɻ ϑΟʔυόοΫΛ͍ͪૣ͘ड͚औΕΔɻ 4
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߭ͰͷಟΨεݕʹɺΧφϦΞ͕ ΘΕͨ͜ͱʹ༝དྷ͢Δɻ ͍ΘΏΔ߭ͷΧφϦΞɺ߭ʹ͓ ͍ͯ͠͠ൃੜ͢ΔϝλϯҰࢎԽ ૉͱ͍ͬͨଉΨεಟΨεૣظൃ ݟͷͨΊͷܯใͱͯ͠༻͞Εͨɻຊ छͭͶʹ͍͑ͣͬͯ͞ΔͷͰɺҟৗൃ ੜʹઌۦ͚·ͣ໐͖͕ࢭΉɻͭ· ΓةݥͷΛͱࣖͰ֬ೝͰ͖Δॴ ͕ॏๅ͞ΕɺಟΨεݕʹ༻͍ΒΕ ͨɻ wikipedia ΑΓ 5
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Use Cases 6
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Application » มߋͨ͠ΞϓϦέʔγϣϯίʔυΛຊ൪σϓϩΠͯ͠ݕূ͍ͨ͠ » ৽ػೳͷఆ͍ͯ͠ͳ͍όάΛ࠷খݶʹ͍͗ͨ / ෛՙΛݕূ͍ͨ͠ Infra » ৽͍͠ϛυϧΣΞΛࢼ͍ͨ͠ » ϛυϧΣΞͷϓϩϏδϣχϯάมߋલޙͷมԽΛݕূ͍ͨ͠ 7
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Use Cases in pairs Ansible commands! $ ansible-playbook -i hosts/pairs-jp/prod --limit web-canary playbook_pairs/delivery.yml --extra-vars="pkg_dir=v160101010101-10f29c9" That's all! 8
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Use Cases in Netflix σϓϩΠαΠΫϧʹΧφϦΞΫϥελͷσϓϩΠؚ͕·Ε͓ͯΓɺ ϨϙʔςΟϯά(Canary analysis report) => શମެ։͢Δ͔൱͔ͷδϟ οδ (Canary Score) ·Ͱ͕ࣗಈԽ͞Ε͍ͯ·͢ɻ ඦͱ͍͏Α͏ͳنΛӡ༻͍ͯ͘͠͏͑Ͱɺ શࢮઈରʹආ͚ͳ͚ΕͳΒͳ͍͜ͱΛߟ͑ΔͱࣗવͳྲྀΕɻ 9
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Development & Deployment Flow ެࣜϒϩά ʮDeploying the Netflix APIʯ 10
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Containers Containerͱͷ૬ੑ͕ྑ͍ͷͰɺ Container as a serviceɺCI/CDαʔ ϏεʹΈࠐ·Ε͍ͯΔͷଟ͍ɻ e.g.) Kubernetes 11
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Caution ޓΛऔΕ͍ͯͳ͍ͷɺΧφϦΞαʔόͷσϓϩΠ͕ग़དྷͳ͍ɻ e.g.) ৽͍͠APIϦΫΤετΛ͛ΔΫϥΠΞϯτଆͷίʔυؚΉ ! 12
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Others ຊ൪ڥ(ಉ)ͰͷݕূΛߦ͍͍ͨ߹ɺ ΧφϦΞαʔόͰͳ͘γϟυʔϓϩΩγΛ༻͍Δख๏ϝδϟʔɻ e.g.) cookpad/Kage 13
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Move Fast, Fail Fast (and Small) ߭ (ຊ൪ڥ) ʹɺةݥ͕͍ͬͺ͍Ͱ͢ɻ શ໓Λආ͚ΔҝʹɺΧφϦΞͷॿ͚ΛआΓ·͠ΐ͏ ! (ͪΖΜɺΧφϦΞࢮͳͤͳ͍͜ͱ͕ϕετͰ͕͢ɻ) 14