延續 DevOps、IaC、K8S⋯⋯等熱潮，下一個被人們熱烈討論的技術實踐會是什麼？在新一波浮出水面的關鍵字中，GitOps 會不會下一個明日之星？ 嚴格檢視 GitOps，它並不是一個全新的概念，而是延續在 DevOps + IaC + CI/CD 之上的技術實踐。在這場演講，我們將會認識何為 GitOps，並以 GitLab 為例說明如何開始實踐 GitOps。

2. Photo by Abele Gigante on Unsplash Cheng Wei Chen @ Cloud Edge Sumit 2020
From DevOps to GitOps
with GitLab

3. Cheng Wei Chen 陳 正瑋
DevOps Engineer @ 得寬科技
《Effective DevOps 中文版》譯者、GitLab Hero
http://chengweichen.com

4. https://devopstw.club

5. Agenda
‧什麼是 GitOps
‧範例分享
‧如何開始實踐 GitOps
‧結語

6. STORY
Photo by Timothy Meinberg on Unsplash

7. Commit
Code OK!
Dev
Ops
Deploy
Code
炸
炸炸
啊～我忘了了說有⼀一個新的 Config ~

8. Commit
Code OK Again !
Dev
Ops
Code
Deploy
炸
炸炸
AgainAgainAgain
Ops啊！我昨天有⼿手動改了了
⼀一個 Config，應該不是
這個原因吧？

9. Commit
Code OK Again x2
Dev
Ops
Code
Deploy
炸
炸炸
AgainAgainAgain
AgaiAgaAga
炸
炸炸炸
炸炸
炸
炸炸
炸
炸炸
炸
炸炸
炸
炸炸
炸
炸炸
炸
炸炸
炸
炸炸
炸
炸炸
Infra
Infra 有⼀一些調整，忘了了
跟你說～

10. Photo by Fancycrave on Unsplash
什什麼是 GitOps

11. Provision
Code DeployArtifacts Production
⼀一條龍
⼯工程師
Configuration

12. Provision
Code DeployCI / CD Production
⼀一條龍
⼯工程團隊
Configuration
Automation

13. Code DeployCI / CD Production
⼀一條龍
⼯工程團隊
Configuration
Automation
Ops / Infra
團隊
Provision

14. 圖片來來源 https://youtu.be/Usb9iUphT6Y

15. GitOps = IaC + MRs + CI/CD
GitLab 說的~

16. GitOps = IaC + MRs + CI/CD
Infrastructure as Code
Infrastructure System Configuration Application Configuration

17. GitOps = IaC + MRs + CI/CD
Merge Requests

18. GitOps = IaC + MRs + CI/CD
Continuous Integration
Continuous Delivery
And Automation

19. GitOps = IaC + MRs + CI/CD
DevOps

20. Photo by Fancycrave on Unsplash
範例例分享

21. 新 Issue
Coding
Commit CI/CD Pipeline
建立 Feature branch
測試驗收
Feature branch
Master branch
Prod Pipeline
新 Issue
Merge
Merge
Monitor
Production branch
Feedback
Code Review
CI/CD Pipeline

22. Commit
檢查 .gitlab-ci.yml
GitLab
Server
產⽣生 CI/CD Pipeline
GitLab
Runner
執行 Job
CI Job
回傳 Logs
顯⽰示於 Pipeline
Terraform Ansible
Cloud
Vault Repository
Cloud
Cloud

23. App
Infra
GitLab
Runner
1. App 有更更新嗎？
2. infra 有更更新嗎？
3.有！執⾏行行異異動！
Worker
Build Test Release
Validate Plan
Validate Plan Approve

24. 圖片來來源 https://gitlab.com/gitops-demo/readme

25. 圖片來來源 https://gitlab.com/gitops-demo/readme

26. 圖片來來源 https://gitlab.com/gitops-demo/readme

27. 圖片來來源 https://gitlab.com/gitops-demo/readme

28. 圖片來來源 https://gitlab.com/gitops-demo/readme

29. 圖片來來源 https://gitlab.com/gitops-demo/readme

30. 圖片來來源 https://gitlab.com/gitops-demo/readme

31. 圖片來來源 https://gitlab.com/gitops-demo/readme

32. Photo by Fancycrave on Unsplash
如何開始實踐 GitOps

33. 1. IaC
2. Automation
3. Code Review & Approve
4. Multi environment
5. CI/CD
6. Use Repository
7. Agile & Iteration
DevOps

34. 1. IaC
讓⼀一切都成為 Code

35. 2. Automation
盡可能⾃自動化
如果不成，就紀錄它！

36. 3. Code Review & Approve
審查、複閱、檢查、稽核

37. 4. Multi environment
運⽤用在所有的環境！

38. 5. CI/CD
⾃自動化的唯⼀一觸發點！

39. 6. Use Repository
分⽀支策略略、Flow、Workflow

40. 7. Agile & Iteration
⼩小粒度、多迭代

41. Tools
VCS
CI
CD
Container Registry
CM
IaC
Container orchestration
Yes
Yes
Yes
Yes
透過 Runner 間接運⽤用
透過 Runner 間接運⽤用
可整合

42. Photo by Fancycrave on Unsplash
結語

43. GitOps = IaC + MRs + CI/CD

44. GitOps is IaC done right !

45. DevOps, then GitOps !

46. GitOps is not for everyone !
(with K8S)
現階段