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tfnotify - Show Terraform execution plan beautifully on GitHub
BABAROT
September 11, 2018
Technology
5
9.1k
tfnotify - Show Terraform execution plan beautifully on GitHub
https://hashicorp.connpass.com/event/98386/
BABAROT
September 11, 2018
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Transcript
tfnotify @b4b4r07 (Sep 11, 2018) / HashiCorp Meetup #3 DevOps
Λࢧ͑Δࠓͷ HashiCorp πʔϧ܈ʹ͍ͭͯ Show Terraform execution plan beautifully on GitHub
BABAROT / @b4b4r07 Mercari, Inc. SRE, Microservices Platform Blog /
tellme.tokyo
1. mercari/tfnotify 2. Why tfnotify? 3. Implementations Agenda
mercari/tfnotify
• Go CLI πʔϧ • Terraform ͷ࣮ߦ݁ՌΛύʔε͠ɺ దͳϑΥʔϚοτʹ͋ͯΊͯɺ ҙͷ௨ઌ
(GitHub ͷίϝϯτ) ௨͢Δ tfnotify ͱ
tfnotify Workflow DSFBUFE UFSSBGPSNQMBOcUGOPUJGZQMBO 1045DPN N FOU PVUQVU
tfnotify Workflow N FSHFE UFSSBGPSNBQQMZcUGOPUJGZBQQMZ 1045DPN N FOU PVUQVU
Example • fmt • plan • apply
Example {{.Title}} {{.Message}} {{.Result}} {{.Body}} ࣮ߦग़ྗͯ͢ ࣮ߦ݁ՌͷαϚϦ --messageͰͤΔ ҙͷλΠτϧ
Why tfnotify?
ͳͥඞཁͱͳͬͨͷ͔ • ϝϧΧϦͰ Microservices ྖҬͰ Terraform Λར༻͍ͯ͠Δ • Ownership ͷ؍͔ΒΠϯϑϥཧʹ͓͍ͯϨϏϡʔɾϚʔδ
֤ Micorservices νʔϜʹΑͬͯ͞ΕΔ͖ • ͱ͍ͬͯɺPlatform νʔϜʹϨϏϡʔ͞Ε͍ͨέʔε͋Δ
ͳͥඞཁͱͳͬͨͷ͔ • Platform νʔϜͱͯ͠ɺ֤ Microservices νʔϜͱͯ͠ɺ Infrastructure as Code ͷॏཁੑΛཧղ͠
Terraform ͰίʔυԽ͠ɺ ͦͷ࣮ߦܭըΛຖճݟΔ͜ͱΛश׳͚͍ͮͨ • ຖଟ͘ͷ P-R ͕͋ΔதɺCircle CI ʹݟʹ͍͘खؒΛল͖͍ͨ →ϨϏϡʔͷྲྀΕͰ GitHub ্ͰΫΠοΫʹ֬ೝ͍ͨ͠
ϝϧΧϦͰͷ HashiCorp πʔϧ
ϝϧΧϦͰͷ HashiCorp πʔϧ • ϝϧΧϦʹ 70 Ҏ্ͷ Microservices ͕͋Δ (ࠓݱࡏɽ૿͑ଓ͚͍ͯΔ)
• ͯ͢ͷ Microservices ͱͦͷ Platform ͷ Πϯϑϥߏஙʹ Terraform Λར༻͍ͯ͠Δ • Developers ʹ Infrastructure as Code Λ ࣮ફͯ͠Β͏
ϝϧΧϦͰͷ Terraform ར༻ࣄྫ
ϝϧΧϦͰͷ Terraform ར༻ࣄྫ
ϝϧΧϦͰͷ Terraform ར༻ࣄྫ
ϝϧΧϦͰͷ Terraform ར༻ࣄྫ
ϝϧΧϦͰͷ Terraform ར༻ࣄྫ • Insights • 110+ Contributors • 8
~ 10 Pull Requests / week (5 days) • 140+ state files (70+ Microservices * 2 Env) • ͻͱͭͷதԝϦϙδτϦͰͯ͢ͷ Terraform ίʔυΛཧ͍ͯ͠Δ • CI pipeline ͷߏங͕ҰͰࡁΉ • Platform νʔϜ͕ϨϏϡʔʹೖΓ͍͢
ϦϙδτϦߏ • ֤ Microservice ͝ͱʹ σΟϨΫτϦΛ͚Δ • Service ͝ͱʹ tfstate
Λ͚Δ • ӨڹΛଞٴͤ͞ͳ͍ • Resource ͝ͱʹ file Λ͚Δ • ϦιʔεఆٛॴΛ໌֬Խ • CODEOWNERS Ͱݖݶҕৡ
ϦϙδτϦߏ • ֤ Microservice ͝ͱʹ σΟϨΫτϦΛ͚Δ • Service ͝ͱʹ tfstate
Λ͚Δ • ӨڹΛଞٴͤ͞ͳ͍ • Resource ͝ͱʹ file Λ͚Δ • ϦιʔεఆٛॴΛ໌֬Խ • CODEOWNERS Ͱݖݶҕৡ தԝूݖ ཱࣗࢄ
ݖݶҕৡ IUUQTCMPHHJUIVCDPNJOUSPEVDJOHDPEFPXOFST • GitHub ͷػೳ • CODEOWNERS ʹهࡌ͞Ε ͨਓ͔Β Approve
͞ΕΔ ·ͰϚʔδͰ͖ͳ͍Α͏ʹ Ͱ͖Δ • ͜ΕʹΑΓݖݶҕৡΛ࣮ݱ • (উखʹมߋͰ͖ͳ͍)
ݖݶҕৡ IUUQTIFMQHJUIVCDPNBSUJDMFTBCPVUDPEFPXOFST
Ϟδϡʔϧ • microservices-starter-kit (Terraform Ϟδϡʔϧ) • Template Provider Λ͍σΟϨΫτϦ࡞ɺϑΝΠϧు͖ग़͠ •
Microservices ͷ্ཱͪ͛ʹඞཁͳϦιʔεΛ Bootstrap ͢Δ • GCP Project, Service account ͳͲ • PagerDuty, DataDog, Kubernetes (Namespace, Secret) ͳͲ • GitHub Teams (CODEOWNERS ͷݖݶҕৡʹ͏) IUUQTTQFBLFSEFDLDPNCCSUFSSBGPSNPQTGPSNJDSPTFSWJDFT
Implementations
࣮ • io.TeeReader Λ͍ͬͯΔ • GitHub ʹ POST ͢Δ͚ͩͰ ͳ͘
CI ͷ Console ʹग़ྗ • Terraform ͷ࣮ߦ݁Ռࣗલͷ ύʔαͰߏԽ͢Δ (regexp) • POST ͢Δϝοηʔδ Go ͷ ςϯϓϨʔτͰॻ͘͜ͱ͕Ͱ͖Δ • ઃఆ YAML Ͱ࣋ͭ
࣮ • ॏෳͨ͠༰͕͋Δ߹ɺ ݹ͍ͷ͕আ͞ΕΔ • ࣮ߦ݁Ռ͍ͷͰ Details λά ͰғͬͯંΓͨͨΈɺҰṮʹඞཁ ͳใ͚͕ͩݟ͘͢දࣔ͞ΕΔ
{{.Title}}, {{.Message}} ͷॏෳΛݟΔ
Conclusion
·ͱΊ • ϝϧΧϦͰ Microservices ྖҬͰ Terraform Λར༻͍ͯ͠Δ • ूݖͱࢄͷόϥϯεͰ Terraform
ϦϙδτϦΛӡ༻͍ͯ͠Δ • ͨ͘͞Μͷ P-R ΛޮΑ͘ϨϏϡʔ͢ΔͨΊ tfnotify Λॻ͍ͨ • Terraform ͷ࣮ߦ݁ՌΛखܰʹ֬ೝ͍ͨ͠ • Infrastructure as Code ͷจԽΛ͔ࠜͤΔ • ຖճ plan, apply ݁ՌΛݟΔश׳Λͭ / ͬͯΒ͏ • ઌߦ࣮͕ͳ͍ͨΊ OSS ʹͨ͠
Thanks