Road to k8s

2018/4/5に表参道.rbでLTしたときの資料です。

Transcript

1. Road to k8s @bigplants Apr 5th 2018 @Omotesando.rb
2. Who am I ? • Daiki Hirakata (36) • Software Engineer • Main Programing Languages:
 PHP, Ruby • Primary interests:
 DevOps, Docker, Kubernetes, Microservice Architecture, GCP @bigplants
3. ͪΐͬͱ͚ͩએ఻
4. ઈࢍ։ൃऀืूதʂ • ϓϩμΫτ໊: ALL-IN • اۀ׆ಈͰඞཁͳશͯͷ πʔϧ͕ೖ͍ͬͯΔ • Rails, Angular, AWS • גࣜձࣾϏδωεόϯΫ άϧʔϓ
5. ࠓ೔͸ɺRailsͷdockerҠߦͷ ࿩Λ͠·͢ɻ
6. Agenda • ݱঢ়ͷ՝୊ • Dockerɺk8sͷ࿩ • ࠓޙͷϩʔυϚοϓ
7. ݱঢ়ͷ՝୊ͦͷ̍
8. ͜Ε͸Կͷ਺ࣈͰ͠ΐ͏ʁ 3/6
9. ਖ਼ղ͸ɺ ฐࣾͰ̍͜͜ʙ̎ϲ݄಺ʹ vagrantͷ։ൃ؀ڥ͕յΕͨ ਓͷ਺
10. ݱঢ়ͷ՝୊ͦͷ̎
11. σϓϩΠɺεέʔϧΞ΢τ ͕༰қͰ͸ͳ͍
12. ݱঢ়ͷDevOpsपΓͷ੔ཧ • ChefͰϓϩϏδϣχϯά • CapistranoͰRailsΞϓϦΛσϓϩΠ • ShellscriptͰϑϩϯτΤϯυͷAngularΛσϓ ϩΠ
13. DevOpsͷ՝୊ • ֤޻ఔ͕෼அ͞Ε͍ͯͯγʔϜϨεʹσϓϩΠ Ͱ͖ͳ͍(ख਺͕૿͑Δ) • Αͬͯzero-downtimeͷσϓϩΠ͕Ͱ͖ͳ͍ • σϓϩΠ͔͔࣌ؒΔ(30min - 3h) • ChefͰႈ౳ੑͷ୲อ͕༰қͰ͸ͳ͍
14. ͦ͏ͩʂίϯςφ࢖͓͏ʂ
15. ίϯςφͷϝϦοτ • σϓϩΠ͕ߴ଎ɻίϯςφΠϝʔδΛ෮ݩ͢ Δ͚ͩɻ • ͳͷͰ։ൃ؀ڥ͕յΕͨͱͯ͠΋࡞Γ௚͢ͷ ͕଎͍ɻ • σϓϩΠ͕ίϯςφΛஔ͖׵͑ΔҙຯʹͳΔ ͷͰႈ౳ੑͷ୲อ͕͠΍͍͢ɻ
16. յΕ͍͍ͨͬͯ͡Όͳ͍͔ ίϯςφͩ΋ͷ
17. ίϯςφ ΦʔέετϨʔγϣϯ͸ɺ k8s (Kubernetes)Ͱʂ
18. k8sͷϝϦοτ • ίϯςφͷӡ༻ࣗಈԽͷ࢓૊Έ͕੔͍ͬͯΔ • Φʔτεέʔϧ (ίϯςφɺϊʔυ) • ࣗಈϦΧόϦ • σϓϩΠํ๏ͷબ୒ࢶ͕͋Δ
 ϩʔϦϯάΞοϓσʔτɺΧφϦΞϦϦʔε • ίϛϡχςΟ͕௒׆ൃ • Ϋϥ΢υϕϯμʹґଘ͠ͳ͍ • ڠࢍاۀɺஂମ͕୔ࢁ <- CNCF Λࢀর
19. Docker, k8sͷ࿩ • ඞཁͳίϯςφ • docker-composeͱk8s • Dockerfile
20. ඞཁͳίϯςφ • App1(rails) • Worker(rails) • App2(Node.js) • App3(Node.js) • App4(Node.js) • Nginx • Redis • MySQL • Elasticsearch
21. docker-composeͱk8s • ։ൃ؀ڥͱެ։؀ڥΛͲͬͪ΋k8sͰ΍Γൈ͘ ͷ͸ਏ͍ɻ • ։ൃ؀ڥ͸ docker-compose • ެ։؀ڥ͸ k8s Ͱ͍͘
22. Dockerfile • ։ൃ؀ڥͱެ։؀ڥͰ͸Dockerfile͸ҰॹʹͰ͖ ͳ͍ɻ • ཧ༝͸ɺެ։؀ڥ༻ͷdocker image͸σϦόϦ Մೳ(ιʔείʔυؚΊ͢΂͕ͯύοΫ͞Εͨঢ় ଶ)Ͱͳ͚Ε͹͍͚ͳ͍ɻ • ͕ɺ։ൃ؀ڥ͸ͦΕͩͱ࢖͍উख͕ѱ͗͢Δɻ
23. ։ൃ؀ڥͷDockerfile • ࣮ߦ͢Δඞཁͷ͋Δπʔϧ͸͢΂ͯΠϯετʔ ϧ
 ruby, bundle, elasticsearch, nodeͳͲ • ىಈ࣌ʹඞཁͳ࡞ۀ͸EntrypointͰ࣮ߦ
24. ։ൃ؀ڥͷDockerfileͷҰ෦ൈਮ
25. ެ։؀ڥͷDockerfile • ඞཁͳπʔϧ
 ruby, bundler, node • ඞཁͳ͍πʔϧ
 elasticsearch • ιʔείʔυΛؚΊΔ
26. ެ։؀ڥͷDockerfileͷҰ෦ൈਮ
27. ͞Βʹ͔͜͜Β
28. Docker Multi-stage build • ҰͭͷDockerfileʹෳ਺ͷFROM۟ΛೖΕΒΕΔ • npm, bower, bundler͸ඞཁͳ࠷ऴతʹు͖ग़͞Εͨ ϑΝΠϧ͚ͩΛ֤εςʔδ͔Βίϐʔ͢Δࣄ͕Ͱ͖Δ • bundler, node(ͦΕͧΕͷґଘͨ͠native lib)΋image ͔Β֎ͤΔ • ͜ΕͰimage͕ܰྔԽͰ͖Δ
29. ࠓޙͷϩʔυϚοϓ • ։ൃ༻ίϯςφ४උ • ެ։༻ίϯςφ४උ <- ΠϚίί • GKEʹσϓϩΠ • CI/CDύΠϓϥΠϯͷ੔උ • ୭Ͱ΋͓खܰʹk8sΫϥελʹ؀ڥߏங&σϓϩΠͰ͖Δ Α͏ʹ͢Δ
30. ·ͨਐḿڞ༗͠·͢
31. ࠓ೔ͷ·ͱΊ • ։ൃ؀ڥͱެ։؀ڥͰ͸Dockerfile͸Θ͚Δ΂ ͠ • ։ൃ؀ڥͷίϯςφ͸։ൃ͠΍͍͢Α͏ʹ͢ Δ • ެ։؀ڥͷίϯςφ͸ඞཁͳ΋ͷ͚ͩʹ͢Δ