GitHub Actions ConFoo Montreal 2025-02-26

GitHub Actions
Confoo Montreal
February 2025

1. GitHub Actions 2025-02-26 Sean Sullivan
2. GITHUB ACTIONS
3. Agenda Core concepts Security
4. “GitHub Actions help you automate your software development work fl ows” source: GitHub.com
5. “You can write individual tasks, called actions, and combine them to create a custom work fl ow” source: GitHub.com
6. Getting started
7. Actions tab
8. Actions tab Starter Work fl ows
9. Work fl ow editor
10. Work fl ow editor
11. Work fl ow editor
12. Work fl ow editor checkout
13. Work fl ow editor setup-java
14. Work fl ow editor run
15. Work fl ow editor
16. .github/work fl ows
17. Actions tab
18. Actions tab
19. Actions tab
20. Valkey Iceberg Log4j Open source projects using GitHub Actions Spring Boot Netty Net fl ix Zuul
21. Core concepts
22. Events Actions Work fl ows
23. create deployment deployment_status issue created pull_request push schedule label created (and many more) Events trigger work fl ows
24. Work fl ows are custom automated processes that you can set up in your repository to build, test, package, release, or deploy source: GitHub.com
25. GitHub webhooks GitHub Actions work fl ows
26. Actions are individual tasks that you can combine to create jobs source: GitHub.com
27. You can create custom Actions or use Actions provided by the GitHub community source: GitHub.com
28. action.yml declares the inputs and outputs for an action source: GitHub.com
29. Types of Actions: JavaScript Docker source: GitHub.com
30. “GitHub Actions is available with GitHub Free, GitHub Pro, GitHub Team, and GitHub Enterprise” source: GitHub.com
31. What if I already have an existing CI tool enabled?
32. Keep your existing CI tool and enable GitHub Actions
33. Evaluate both CI tools running side-by-side
34. Actions runtime Runners Virtual Environments
35. Runners GitHub-hosted Self-hosted
36. Hosted Runners “GitHub hosts Linux and Windows runners on Standard_DS2_v2 virtual machines in Microsoft Azure with the GitHub Actions runner application installed” source: GitHub.com
37. Self-Hosted Runners “Self-hosted runners can be physical, virtual, container, on-premises, or in a cloud” source: GitHub.com
38. Self-Hosted Runners
39. Self-Hosted Runners C Sharp
40. Virtual Environments
41. Ubuntu 24.04 Ubuntu 22.04 Linux support
42. ARM support
43. ARM support
44. ARM support
45. Work fl ow matrix
46. Third party actions
47. AWS Actions Azure Actions Google Cloud Actions
48. Pulumi Actions Terraform Actions Docker Actions
49. https://github.com/aws-actions
51. AWS: action.yml
52. Security
53. Secrets access protected keys using the secrets context object source: GitHub.com
54. Secrets
55. Secrets source: GitHub.com
56. Secrets source: GitHub.com
57. Secrets source: GitHub.com
58. Self-Hosted Runners “do not use self- hosted runners with public repositories” source: GitHub.com
59. Self-Hosted Runners “Forks of your public repository can potentially run dangerous code on your self-hosted runner machine” source: GitHub.com
60. GitHub Actions YAML Automation Conclusion
61. Thank you tinyrobots.bsky.social github.com/sullis
62. THE END
63. Bonus slides
64. “CI ensures that the code that we create, as a team, works by providing us with rapid feedback on any problems”