Lab: GitOps with GitLab and K8s

（簡報備存，Lab: GitOps with GitLab and K8s @ iThome Cloud Edge Summit 2022 | 2022/07/26）

GitLab 自 2022 年 5 月進入 15 版之後，原廠最新的 Slogan 為 The One DevOps Platform，意指除了過去大家熟知的 Git、CI/CD 功能之外，GitLab 已經是一個完整將 DevOps 核心概念融入其中的 DevOps 平台。

在這場 90 分鐘的 Lab，講師將帶領各位學員快速的體驗在 GitLab 上實作一個簡單的 GitOps；原來 GitOps 並非是遙不可及的未來，而是一個你我都該了解的 DevOps / IaC 當前趨勢。

課程目標
• 認識 IaC 與 DevOps 的熱門趨勢 - GitOps
• 快速以 GitLab 實作一個簡單的 GitOps，體驗何為 GitOps 

Transcript

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2. Photo by Abele Gigante on Unsplash
   Cheng Wei Chen @ iThome Cloud Sumit 2022
   Lab: GitOps with GitLab
   
   
   and K8s
   

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3. Cheng Wei Chen 陳 正瑋
   
   
   Athemaster 炬識科技 / Technology Consultant

   《Effective DevOps 中⽂版》譯者、GitLab Hero
   http://chengweichen.com
   

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4. Agenda
   ‧GitOps 簡介
   
   
   ‧解說 Lab 的案例架構
   
   
   ‧講師案例示範及學員實作
   
   
   ‧結語
   

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5. STORY
   

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6. Commit
   Code OK!
   Dev
   Ops
   Deploy
   Code
   炸
   炸
   炸
   

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7. Commit
   Code OK!
   Dev
   Ops
   Deploy
   Code
   炸
   炸
   炸
   啊～我忘了說有⼀個新的 Con
   fi
   

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8. Commit
   Code OK Again !
   Dev
   Ops
   Code
   Deploy
   炸
   炸
   炸
   Again
   Again
   Again
   

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9. Commit
   Code OK Again !
   Dev
   Ops
   Code
   Deploy
   炸
   炸
   炸
   Again
   Again
   Again
   Ops
   啊！我昨天有⼿動改了
   ⼀個 Con
   fi
   

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10. Commit
    Code OK Again x2
    Dev
    Ops
    Code
    Deploy
    炸
    炸
    炸
    Again
    Again
    Again
    Agai
    Aga
    Aga
    炸
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11. Commit
    Code OK Again x2
    Dev
    Ops
    Code
    Deploy
    炸
    炸
    炸
    Again
    Again
    Again
    Agai
    Aga
    Aga
    炸
    炸
    炸
    炸
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    炸
    炸
    Infra
    Infra 有⼀些調整，忘了
    跟你說～
    

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12. Provision
    Code Deploy
    Artifacts Production
    ⼀條龍
    
    
    ⼯程師
    Configuration
    

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13. Provision
    Code Deploy
    CI / CD Production
    ⼀條龍
    
    
    ⼯程團隊
    Configuration
    Automation
    

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14. Code Deploy
    CI / CD Production
    ⼀條龍
    
    
    ⼯程團隊
    Configuration
    Automation
    Ops / Infra
    
    
    團隊
    Provision
    

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15. Photo by Fancycrave on Unsplash
    GitOps 簡介
    

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

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

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18. GitOps = IaC + MRs + CI/CD
    Merge Requests
    Change mechanism
    
    
    Code Review / Approvals
    

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

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20. GitOps = IaC + MRs + CI/CD
    Infrastructure as Code
    Git repository / VCS
    

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21. GitOps = IaC + MRs + CI/CD
    Infrastructure as Code
    ???
    

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22. GitOps = IaC + MRs + CI/CD
    圖片來源 https://youtu.be/Usb9iUphT6Y
    

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23. GitOps = IaC + MRs + CI/CD
    圖片來源 https://youtu.be/Usb9iUphT6Y
    

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24. 圖片來源 https://youtu.be/Usb9iUphT6Y
    GitOps = IaC + MRs + CI/CD
    

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25. GitOps = IaC + MRs + CI/CD
    圖片來源 https://youtu.be/Usb9iUphT6Y
    

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26. GitOps = IaC + MRs + CI/CD
    圖片來源 https://youtu.be/Usb9iUphT6Y
    

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27. App
    Infra
    Worker
    1. App 有更新嗎？
    2. infra 有更新嗎？
    3.有！執⾏異動！
    PULL or PUSH
    

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28. App
    Infra
    Worker
    1-1. App 有更新，該做事了！
    1-2. infra 有更新，該做事了！
    2.收到！開始執⾏異動！
    PULL or PUSH
    

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29. Photo by Fancycrave on Unsplash
    實作練習
    

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30. DEMO
    

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31. Photo by Fancycrave on Unsplash
    結語
    

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32. Tools
    VCS
    
    
    CI
    
    
    CD
    
    
    Container Registry
    
    
    CM
    
    
    IaC
    
    
    Container orchestration
    14.x 15.x
    

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33. 資料來源 https://gitlab.com/gitops-demo/readme
    

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

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35. GitOps = IaC + MRs + CI/CD
    GitOps is IaC done right !
    

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36. DevOps, then GitOps !
    

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37. GitOps is not for everyone !
    (with K8S) ⽔很深請⼩⼼
    

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

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

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

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41. 1. IaC
    讓⼀切都成為 Code
    

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42. 2. Automation
    盡可能⾃動化
    
    
    如果不成，就紀錄它！
    

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

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44. 4. Multi environment
    運⽤在所有的環境！
    

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45. 5. CI/CD
    ⾃動化的唯⼀觸發點！
    

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46. 6. Use Repository
    分⽀策略、Flow、Workflow
    

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47. 7. Agile & Iteration
    ⼩粒度、多迭代
    

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