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Terraform交通整備 〜大事故を防ぐために〜
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coconala_engineer
December 10, 2023
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Terraform交通整備 〜大事故を防ぐために〜
2023/12/05 Next Year Con for SRE の資料です
https://timeedev.connpass.com/event/302385/
coconala_engineer
December 10, 2023
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Transcript
Copyright coconala Inc. All Rights Reserved. Terraformަ௨උ ʙେࣄނΛ͙ͨΊʹʙ γεςϜϓϥοτϑΥʔϜ෦ ΠϯϑϥɾSREνʔϜ
TeamManager ٢ݟ
Copyright coconala Inc. All Rights Reserved. 2 ࣗݾհ ٢ݟʢΑ͔͠Θ ͨ͘Έʣ
• ੜ·Ε ੩Ԭ → จܥେֶ͔ΒΤϯδχΞ • ܦྺ ۚ༥SIer → ελʔτΞοϓ → ίίφϥ • झຯ ϥΠϒɾΠϕϯτʹߦ͘
Vision Ϗδϣϯɺϛογϣϯʹج͍ͮͨࣄۀΛల։ νʔϜ͕ߏங͍ͨ͠ͱࢥ ͏࠷ྑͳະདྷͷΠϝʔδ νʔϜ͕ߏங͍ͨ͠ͱࢥ ͏࠷ྑͳະདྷͷΠϝʔδ Mission νʔϜ͕࣮ݱ͍ͨ͠த৺ తͳతʢଘࡏҙٛʣ ҰਓͻͱΓ͕ʮࣗͷετʔϦʔʯΛੜ͖͍ͯ͘ੈͷதΛ࡞Δ
ݸਓͷࣝɾεΩϧɾܦݧΛՄࢹԽ͠ɺ ඞཁͱ͢Δͯ͢ͷਓʹ݁ͼ͚ͭɺ ݸਓΛΤϯύϫʔϝϯτ͢ΔϓϥοτϑΥʔϜΛఏڙ͢Δ ࣝɾεΩϧɾܦݧͷϚονϯάαʔϏεΛల։ ࣄۀ༰ 3
ࣄɾൿॻɺܦཧɺਓࣄɺCSɺϚʔέςΟϯάɺσβΠϯɾ੍࡞ͳͲ ͷਓखෆΛղফ اۀ๊͕͑Δ༷ʑͳܦӦ՝Λɺ ܦݧݟͷ๛ͳϓϩਓࡐΛ׆༻͢Δ͜ͱͰղܾ ඞཁͳ͚ͩ࣌ؒ՝ۚͰ Ϗδωεߦͯ͘͠Ε͑ΔਓΛհ ϋΠΫϥεͷۀҕୗ ίϯαϧλϯτΛհ ઐελοϑΛ௨ͯ͡ɺݫબͨ͠ඇެ։ͷ໊࣮τοϓΫϦΤΠλʔ ϩΰಈըɺϗʔϜϖʔδͳͲͷσβΠϯɾ੍࡞ܥͷδϟϯϧ
Λఏڙ͠ΫϦΤʔλʔෆΛղফ ίίφϥ͕ܖओମͱͳΓ ϋΠΫϥε໊࣮ΫϦΤΠλʔΛհ ๏Q&AΛແྉͰӾཡɾߘͰ͖ɺ4,000໊Ҏ্ͷหޢ࢜Λ ɾҬผͰݕࡧɾ͍߹Θ͕ͤՄೳʢࠂܝࡌ՝ۚϞσϧʣ ITਓࡐͷۀҕୗ ΤʔδΣϯτ หޢ࢜ͱϢʔβʔͷ ϚονϯάαʔϏε ECܕͷαʔϏε ϚʔέοτϓϨΠε ϚονϯάαʔϏε ֓ཁ 4 Ϗδωεతͷߪೖʹ ಛԽͨ͠αʔϏε ITϑϦʔϥϯεͱاۀΛϚονϯάɻεΩϧϚʔέοτɾ ςοΫΤʔδΣϯτ྆ํͰͷධՁσʔλΛ࿈ܞɾ׆༻༧ఆ
Copyright coconala Inc. All Rights Reserved. 5 ͖͔͚ͬ
Copyright coconala Inc. All Rights Reserved. 6 6ͷࢥ͍͕ίʔυʹڽॖ͞Ε͍ͯͨ ɾ࣮ͨ࣌͠୲ऀόϥόϥ →
ͦͷͨΊ͓ͷ͓ͷͷࢥ͏ߏ͕ݱࡏ·Ͱͬͨ ɾ໋໊༳Ε͕ଟ͍ → module/awsͳͷ͔aws/moduleͳͷ͔ ɾmoduleͱͯ͠࡞͍ͯ͠Δ͕தresource͕1ͭ͋Δ͚ͩͱ͍͏͜ͱ ͕··͋Δ → moduleͷ༗༻ੑ͕Θ͔Βͣʹ࣮͞Ε͍ͯΔ ɾಉ͡ίʔυ͕module֎ʹهड़͞Ε͍ͯͯɺmoduleͷςΠΛͳ͍ͯ͠ͳ ͔ͬͨ → ෆཁͳίʔυ͕ٯʹࠞཚΛট͍ͨ
Copyright coconala Inc. All Rights Reserved. 7 applyͰαʔϏεμϯͤͯ͞͠·ͬͨ • मਖ਼ϛεͰλʔήοτάϧʔϓ͕֎ΕΔࠩΛݟམͱͨ͠
• deleteʹහײ͕ͩͬͨɺchangeͩͬͨͷ͕᠘ ~ resource "aws_autoscaling_group" "api_production" { + force_delete_warm_pool = false id = "api-prod" ~ launch_configuration = "api-prod_v1" -> "api-prod_v2" name = "api-prod" ~ target_group_arns = [ - "arn:aws:elasticloadbalancing:ap-northeast-1:XXX:targetgroup/api/v2” ]
Copyright coconala Inc. All Rights Reserved. 8 ੳͱֶͼ • ͻͱͭͷPRͰෳͷରॲΛͨ͠
◦ ϦϑΝΫλ + terraformόʔδϣϯΞοϓ + ຊདྷͷมߋ ◦ ຊདྷ͋Δ͖planͷ͕ࠩݟ͑ͮΒ͘ͳͬͨ • ίʔυ͕ݹ͗ͯ͢ϦϑΝΫλͤ͟ΔΛಘͳ͔ͬͨ • terraformόʔδϣϯ͕దʹཧͰ͖͍ͯͳ͔ͬͨ • োޙʹݪҼ͕ຊ࡞ۀͰ͋Δ͜ͱΛ͑Δ·Ͱʹ࣌ؒΛཁͨ͠ ◦ ୭͕͍ͭͬͨͷ͔ه͞Εͳ͍
Copyright coconala Inc. All Rights Reserved. 9 ରࡦ • ίʔυͷෛ࠴Λղফ
• దͳόʔδϣϯཧ • plan / applyͷΈڧԽ • ӡ༻໘Ͱͷվળ
Copyright coconala Inc. All Rights Reserved. 10 ίʔυෛ࠴ղফ
Copyright coconala Inc. All Rights Reserved. 11 ίʔυͷෛ࠴Λղফ ɾεςʔτϑΝΠϧΛͲͷΑ͏ʹ͚Δ͔Λ ߟ͑Δ
ɾαʔϏε / module ϨϕϧͰಉ༷ͷߏΛ ͱΔΑ͏ʹ͢Δ ɾਖ਼ղͳ͘ɺߏมߋΛߟ͑Δ ɾ৽ن࡞͔Βద༻͠ɺաڈͷͷਵ࣌ Ҡߦ͍ͯ͘͠
Copyright coconala Inc. All Rights Reserved. 12 ίʔυͷෛ࠴Λղফ ɾαʔϏε͝ͱʹཧϦϙδτϦɾAWSΞΧϯτΛ ͍ͯ͠Δ
ɾ৽αʔϏεΛཱͯΔͱ͖ʹVPCRDSͳͲɺಉ͡Α͏ ͳͷͷίʔυΛϓϦηοτͱ͍ͯ͠Δؾ͕ͨ͠ → ڞ௨moduleʹҠಈ ɾ·ͣ৽ཱͯ͘͠ΔαʔϏεΛڞ௨module ɾطଘαʔϏεΛimportͰҠ২ ɾmoduleΧϯϖΩͰ͋Δඞཁͳ͍
Copyright coconala Inc. All Rights Reserved. 13 దͳόʔδϣϯཧ
Copyright coconala Inc. All Rights Reserved. 14 దʹόʔδϣϯΞοϓΛ͔͚Δ όʔδϣϯ͝ͱʹ͖͢ػೳվળ͓ΑͼҰ෦deprecation͕ߦΘΕ͍ͯΔ •
null_resourceͷඪ४Խʢ1.4ʣ • importϒϩοΫಋೖʢ1.5ʣ • testίϚϯυരʢ1.6ʣ
Copyright coconala Inc. All Rights Reserved. 15 దʹόʔδϣϯΞοϓΛ͔͚Δ όʔδϣϯ͝ͱʹ͖͢ػೳվળ͓ΑͼҰ෦deprecation͕ߦΘΕ͍ͯΔ •
null_resourceͷඪ४Խʢ1.4ʣ • importϒϩοΫಋೖʢ1.5ʣ • testίϚϯυരʢ1.6ʣ → ࠷ݶEOLରԠɺՄೳͰ͋Ε࠷৽൛͕·͍͠
Copyright coconala Inc. All Rights Reserved. 16 దʹόʔδϣϯΞοϓΛ͔͚Δ ϓϩόΠμਵ࣌ߋ৽͞Ε͍ͯΔʢؾ͍ͮͨΒ৽͘͠ͳ͍ͬͯΔϨϕϧʣ •
hashicorp/aws ◦ 2ϲ݄Ͱ14όʔδϣϯϦϦʔε͍ͯ͠Δʢ5.18.0 → 5.28.0ʣ • hashicorp/google ◦ 2ϲ݄Ͱ10όʔδϣϯϦϦʔε͍ͯ͠Δʢ4.83.0 → 5.7.0ʣ
Copyright coconala Inc. All Rights Reserved. 17 దʹόʔδϣϯΞοϓΛ͔͚Δ ϓϩόΠμਵ࣌ߋ৽͞Ε͍ͯΔʢؾ͍ͮͨΒ৽͘͠ͳ͍ͬͯΔϨϕϧʣ •
hashicorp/aws ◦ 2ϲ݄Ͱ14όʔδϣϯϦϦʔε͍ͯ͠Δʢ5.18.0 → 5.28.0ʣ • hashicorp/google ◦ 2ϲ݄Ͱ10όʔδϣϯϦϦʔε͍ͯ͠Δʢ4.83.0 → 5.7.0ʣ → terraformͷόʔδϣϯͱ࿈ಈ͍ͯ͠Δͱߟ͑ɺ͋Θͤͯ͋͛Δ → όά͕ࠞೖ͞ΕΔ͜ͱ͕͋ΔͨΊύονόʔδϣϯ্͕͕ͬͨΒૣ͋ͯ͘Δඞཁ͋Γ
Copyright coconala Inc. All Rights Reserved. 18 దʹόʔδϣϯΞοϓΛ͔͚Δ όʔδϣϯΞοϓπʔϧҎԼ͕ީิ •
dependabot • tfupdate • renovate • ࣗલͷεΫϦϓτ
Copyright coconala Inc. All Rights Reserved. 19 దʹόʔδϣϯΞοϓΛ͔͚Δ ͦΕͧΕʹྑ͠ѱ͠ •
dependabot ◦ GithubΛར༻͍ͯ͠ΕͬͱؾܰʹಋೖՄೳ ◦ PR͕େྔʹͰ͖ΔՄೳੑ͋Γ • tfupdate ◦ terraformͱϓϩόΠμͱผʑʹ্͛Δ͜ͱ͕Մೳ ◦ recursiveʹมߋͰ͖Δ • renovate ◦ tfenvΛར༻͍ͯ͠Δέʔεͷʮ.terraform-versionʯߋ৽ର ◦ ʮ.terraform.lock.hclʯΑ͠ͳʹߋ৽
Copyright coconala Inc. All Rights Reserved. 20 దʹόʔδϣϯΞοϓΛ͔͚Δ ͦͷ΄͔ͷߟྀϙΠϯτ •
࣮ߦස ◦ ߏมߋ͕ͲΕ͘Β͍ೖΔ͔ʹΑͬͯΑ͍ͱߟ͑Δ ◦ ίίφϥͰि࣍Ͱ·Θ͍ͯ͠Δ • PRΛ࡞͢Δͷπʔϧʹ͓ͤɺͨͩͦ͠ΕʹΑΔมߋ֬ೝ͢Δඞཁ͋Γ ◦ ࣍અҎ߱Ͱݴٴ
Copyright coconala Inc. All Rights Reserved. 21 plan / applyͷΈڧԽ
Copyright coconala Inc. All Rights Reserved. 22 ਓͷखΛۃྗհࡏͤ͞ͳ͍ & ద༻͕ʹݟ͑ΔΑ͏ʹ͢Δ
• ݱࡏͷӡ༻ ◦ PRΛ࡞ → ࠩνΣοΫ͠plan݁ՌΛίϝϯτ·Ͱࣗಈ ◦ applyखಈͰ͋ΓɺmainϚʔδͱͷ߹ੑ͕͍͋͠
Copyright coconala Inc. All Rights Reserved. 23 ਓͷखΛۃྗհࡏͤ͞ͳ͍ & ద༻͕ʹݟ͑ΔΑ͏ʹ͢Δ
• ͜Μͳ࢟ʹ͠Α͏ͱ͍ͯ͠Δ ※ ઈࢍਐߦத ◦ merge / push͞Ε͕ͨ࠷ޙɺ apply͞ΕΔͪΐͬͱා͍ ◦ plan͕ҙຯΛͳ͢Α͏ʹ͢Δ ◦ ͍ͭมԽ͕ద༻͞Ε͔ͨɺ ◦ ୭͕ঝೝͨ͠ͷ͔Λه͢Δ
Copyright coconala Inc. All Rights Reserved. 24 ӡ༻໘Ͱͷվળ
Copyright coconala Inc. All Rights Reserved. 25 Τϥʔൃੜ֬ΛԼ͛Δ ਓͷʹΑΔΤϥʔͷ֬ΛԼ͛ΔΑ͏ͳϙϦγʔΛఆΊΔ •
ҰͷplanมߋྔΛԼ͛Δ ◦ ಛੑͷҟͳΔมߋผʑͷPRΛͨͯΔ ◦ ͍ͭͰʹͳʹ͔Λ͍Εͳ͍ • ϨϏϡʔڧԽ ◦ Ͳ͏ͯ͠ଟ͘ͳΔͱ͖ηϧϑϨϏϡʔඞਢͱ͢Δ ▪ ࣮ଶͱͯ͠ͷมߋΛਤࣔ͢ΔɺηϧϑϨϏϡʔίϝϯτΛ͢ͳͲ ◦ ϨϏϡΞʔʮQuestionʯΛ͔͚͛Δ ▪ ॳาతͳ͜ͱͰͳΜͰ͍͍ ▪ Ή͠ΖԿؾͳ͍͜ͱ͕ҙ֎ͱॏେͳ͜ͱͩͬͨ͜ͱ͋Δ → ͲΜͳʹؤுͬͯ100%ͷ୲อͱஅݴग़དྷͳ͍
Copyright coconala Inc. All Rights Reserved. 26 ςετͷݕ౼ ͍ΘΏΔςετπʔϧͰ͋ΔTerratestෆ࠾༻ •
ಈతςετͰ͋Γɺͱ͘ʹ୲อ͍ͨ͠ϙΠϯτʹޮ͔ͳ͍ ◦ applyͨ͠Βࣄނ͕ى͖ͨͷͰɺͦͷલʹݕ͍ͨ͠ͱ͍͏ಈػ͕ڧ͍ ▪ ࣄલʹݕͳΒvalidationͳͲ΄͔ͷํ๏͕·͞Δ ◦ ςετίʔυΛॻͨ͘ΊͷͦΕͳΓ ▪ ͦΕʹݟ߹͏୲อ͕Ͱ͖ͳ͍ → จ௨ΓʹͰ͖ͨ͜ͱΛ୲อ͢Δ ΑΓ ΨʔυϨʔϧ͕֑͔͋ͬͯΒམͪͳ͍ ঢ়گΛ࡞Γ͍ͨ
Copyright coconala Inc. All Rights Reserved. 27 ςετͷݕ౼ ΨʔυϨʔϧͷྫ •
preconditionΛهࡌ • Open Policy AgentͷΈࠐΈ ※ઈࢍਐߦத ◦ ҰྫɿLBʹඥͮ͘λʔήοτάϧʔϓ͕θϩNG ◦ Terraform CloudΛಋೖ͍ͯ͠ΕɺCloudͷػೳͷҰͰΈࠐΈՄೳ ◦ ίίφϥTerraform CloudΛಋೖ͍ͯ͠ͳ͍ͨΊɺGithubActionsͷϑϩʔʹΈࠐΈ ༧ఆ • Sentinel ◦ Terraform Cloudݶఆ • terraform-compliance ◦ BDDͰهࡌ → ͜ΕΒΛCIʹΈࠐΜͰະવʹࣄނΛ͙
Copyright coconala Inc. All Rights Reserved. 28 ·ͱΊ • ίʔυͷෛ࠴Λղফ
◦ γεςϜͷม༰ͱڞʹϕετͳߏߟ͑͢ • దͳόʔδϣϯཧ ◦ GA࠷৽൛Λར༻͢Δͷ͕ͨΓલʹ • plan / applyͷΈڧԽ ◦ ਓҝతͳϛεͷՄೳੑΛՄೳͳݶΓഉআ • ӡ༻໘Ͱͷվળ ◦ ӡ༻໘ʹϙϦγʔΛ ◦ ώτͷೖΕସ͑ͳͲͰܧଓతʹߦ͏ඞཁ͕͋Δ
ίίφϥ ΤϯδχΞͷX(Twitter) X /Twitterʢ@coconala_engʣ https://twitter.com/coconala_eng We are hiring!! ࠾༻ϗʔϜϖʔδ https://coconala.co.jp/recruit
ΤϯδχΞ࠾༻ϗʔϜϖʔδ https://coconala.co.jp/recruit/engineer ίίφϥͷਓͱ৫Λ͑Δϒϩά ίίφϥLIVE https://blog.coconala.co.jp/m/m4e4abe8b17e5 ਓੜͷՄೳੑΛ͛ͨϢʔβʔετʔϦʔ Θͨ͠ͷεΩϧղ์ه https://blog.coconala.co.jp/m/me8a586112ad2 ίίφϥʹॴଐ͢ΔΤϯδχΞʹΑΔϒϩά ςοΫϒϩά https://zenn.dev/coconala 29