tfnotify - Show Terraform execution plan beautifully on GitHub

https://hashicorp.connpass.com/event/98386/

Transcript

1. tfnotify @b4b4r07 (Sep 11, 2018) / HashiCorp Meetup #3
 DevOps Λࢧ͑Δࠓ࿩୊ͷ HashiCorp πʔϧ܈ʹ͍ͭͯ Show Terraform execution plan beautifully on GitHub
2. BABAROT / @b4b4r07 Mercari, Inc.
 SRE, Microservices Platform Blog / tellme.tokyo
3. 1. mercari/tfnotify 2. Why tfnotify? 3. Implementations Agenda
4. mercari/tfnotify
5. • Go ੡ CLI πʔϧ • Terraform ͷ࣮ߦ݁ՌΛύʔε͠ɺ
 ద੾ͳϑΥʔϚοτʹ͋ͯ͸Ίͯɺ
 ೚ҙͷ௨஌ઌ (GitHub ͷίϝϯτ౳)
 ΁௨஌͢Δ tfnotify ͱ͸
6. tfnotify Workflow DSFBUFE UFSSBGPSN
   QMBO
   c
   UGOPUJGZ
   QMBO 1045
   DPN N FOU PVUQVU
7. tfnotify Workflow N FSHFE UFSSBGPSN
   BQQMZ
   c
   UGOPUJGZ
   BQQMZ 1045
   DPN N FOU PVUQVU
8. Example • fmt • plan • apply
9. Example {{.Title}} {{.Message}} {{.Result}} {{.Body}} ࣮ߦग़ྗ͢΂ͯ ࣮ߦ݁ՌͷαϚϦ --messageͰ౉ͤΔ ೚ҙͷλΠτϧ
10. Why tfnotify?
11. ͳͥඞཁͱͳͬͨͷ͔ • ϝϧΧϦͰ͸ Microservices ྖҬͰ Terraform Λར༻͍ͯ͠Δ • Ownership ͷ؍఺͔ΒΠϯϑϥ؅ཧʹ͓͍ͯ΋ϨϏϡʔɾϚʔδ͸ ֤ Micorservices νʔϜʹΑͬͯ͞ΕΔ΂͖ • ͱ͸͍ͬͯ΋ɺPlatform νʔϜʹϨϏϡʔ͞Ε͍ͨέʔε΋͋Δ
12. ͳͥඞཁͱͳͬͨͷ͔ • Platform νʔϜͱͯ͠΋ɺ֤ Microservices νʔϜͱͯ͠΋ɺ
 Infrastructure as Code ͷॏཁੑΛཧղ͠ Terraform ͰίʔυԽ͠ɺ ͦͷ࣮ߦܭըΛຖճݟΔ͜ͱΛश׳͚͍ͮͨ • ຖ೔ଟ͘ͷ P-R ͕͋ΔதɺCircle CI ʹݟʹ͍͘खؒΛল͖͍ͨ →ϨϏϡʔͷྲྀΕͰ GitHub ্ͰΫΠοΫʹ֬ೝ͍ͨ͠
13. ϝϧΧϦͰͷ HashiCorp πʔϧ
14. ϝϧΧϦͰͷ HashiCorp πʔϧ • ϝϧΧϦʹ͸ 70 Ҏ্ͷ Microservices ͕͋Δ
 (ࠓ೔ݱࡏɽ૿͑ଓ͚͍ͯΔ) • ͢΂ͯͷ Microservices ͱͦͷ Platform ͷ
 Πϯϑϥߏஙʹ͸ Terraform Λར༻͍ͯ͠Δ • Developers ʹ Infrastructure as Code Λ
 ࣮ફͯ͠΋Β͏
15. ϝϧΧϦͰͷ Terraform ར༻ࣄྫ
16. ϝϧΧϦͰͷ Terraform ར༻ࣄྫ
17. ϝϧΧϦͰͷ Terraform ར༻ࣄྫ
18. ϝϧΧϦͰͷ Terraform ར༻ࣄྫ
19. ϝϧΧϦͰͷ Terraform ར༻ࣄྫ • Insights • 110+ Contributors • 8 ~ 10 Pull Requests / week (5 days) • 140+ state files (70+ Microservices * 2 Env) • ͻͱͭͷதԝϦϙδτϦͰ͢΂ͯͷ Terraform ίʔυΛ؅ཧ͍ͯ͠Δ • CI pipeline ͷߏங͕Ұ౓ͰࡁΉ • Platform νʔϜ͕ϨϏϡʔʹೖΓ΍͍͢
20. ϦϙδτϦߏ੒ • ֤ Microservice ͝ͱʹ
 σΟϨΫτϦΛ෼͚Δ • Service ͝ͱʹ tfstate Λ෼͚Δ • ӨڹΛଞ΁೾ٴͤ͞ͳ͍ • Resource ͝ͱʹ file Λ෼͚Δ • Ϧιʔεఆٛ৔ॴΛ໌֬Խ • CODEOWNERS Ͱݖݶҕৡ
21. ϦϙδτϦߏ੒ • ֤ Microservice ͝ͱʹ
 σΟϨΫτϦΛ෼͚Δ • Service ͝ͱʹ tfstate Λ෼͚Δ • ӨڹΛଞ΁೾ٴͤ͞ͳ͍ • Resource ͝ͱʹ file Λ෼͚Δ • Ϧιʔεఆٛ৔ॴΛ໌֬Խ • CODEOWNERS Ͱݖݶҕৡ தԝूݖ ཱࣗ෼ࢄ
22. ݖݶҕৡ IUUQTCMPHHJUIVCDPNJOUSPEVDJOHDPEFPXOFST • GitHub ͷػೳ • CODEOWNERS ʹهࡌ͞Ε ͨਓ͔Β Approve ͞ΕΔ
 ·ͰϚʔδͰ͖ͳ͍Α͏ʹ Ͱ͖Δ • ͜ΕʹΑΓݖݶҕৡΛ࣮ݱ • (উखʹมߋͰ͖ͳ͍)
23. ݖݶҕৡ IUUQTIFMQHJUIVCDPNBSUJDMFTBCPVUDPEFPXOFST
24. Ϟδϡʔϧ • microservices-starter-kit (Terraform Ϟδϡʔϧ) • Template Provider Λ࢖͍σΟϨΫτϦ࡞੒ɺϑΝΠϧు͖ग़͠ • Microservices ͷ্ཱͪ͛ʹඞཁͳϦιʔεΛ Bootstrap ͢Δ • GCP Project, Service account ͳͲ • PagerDuty, DataDog, Kubernetes (Namespace, Secret) ͳͲ • GitHub Teams (CODEOWNERS ͷݖݶҕৡʹ࢖͏) IUUQTTQFBLFSEFDLDPNCCSUFSSBGPSNPQTGPSNJDSPTFSWJDFT
25. Implementations
26. ࣮૷ • io.TeeReader Λ࢖͍ͬͯΔ • GitHub ʹ POST ͢Δ͚ͩͰ͸ ͳ͘ CI ͷ Console ʹ΋ग़ྗ • Terraform ͷ࣮ߦ݁Ռ͸ࣗલͷ ύʔαͰߏ଄Խ͢Δ (regexp) • POST ͢Δϝοηʔδ͸ Go ͷ
 ςϯϓϨʔτͰॻ͘͜ͱ͕Ͱ͖Δ • ઃఆ͸ YAML Ͱ࣋ͭ
27. ࣮૷ • ॏෳͨ͠಺༰͕͋Δ৔߹ɺ
 ݹ͍΋ͷ͕࡟আ͞ΕΔ • ࣮ߦ݁Ռ͸௕͍ͷͰ Details λά ͰғͬͯંΓͨͨΈɺҰṮʹඞཁ ͳ৘ใ͚͕ͩݟ΍͘͢දࣔ͞ΕΔ
 {{.Title}}, {{.Message}} ͷॏෳΛݟΔ
28. Conclusion
29. ·ͱΊ • ϝϧΧϦͰ͸ Microservices ྖҬͰ Terraform Λར༻͍ͯ͠Δ • ूݖͱ෼ࢄͷόϥϯεͰ Terraform ϦϙδτϦΛӡ༻͍ͯ͠Δ • ͨ͘͞Μͷ P-R Λޮ཰Α͘ϨϏϡʔ͢ΔͨΊ tfnotify Λॻ͍ͨ • Terraform ͷ࣮ߦ݁ՌΛखܰʹ֬ೝ͍ͨ͠ • Infrastructure as Code ͷจԽΛࠜ෇͔ͤΔ • ຖճ plan, apply ݁ՌΛݟΔश׳Λ΋ͭ / ΋ͬͯ΋Β͏ • ઌߦ࣮૷͕ͳ͍ͨΊ OSS ʹͨ͠
30. Thanks