The document discusses modern infrastructure as code using Ansible, covering essential concepts such as modules, playbooks, and variable precedence. It emphasizes reusing playbooks, deploying code, and maintaining secrets while providing advice on structuring inventory files and playbooks. Additionally, it introduces Ansible Tower and mentions practical applications like installing dependencies and managing SSL certificates.

1. Modern Infrastructure
as Code with Ansible
Joe Ferguson

2. Who Am I?
Joe Ferguson
Senior Full Stack Dev @ Preteckt
Open Source Geek
⚽,🏒, and 🏎 fan
Twitter: @JoePFerguson

3. Ansible for DevOps
https://leanpub.com/ansible-for-devops

5. pip install ansible

6. Ansible Concepts 🤔
Modules
Standalone work units to perform a task
Inventory Configuration
Declaration of target systems to perform tasks upon
Playbooks
Complete set of roles / list of actions to take

7. Command Module

8. Command Module

9. Command Module

10. Create Ansible Playbook

11. Create Ansible Playbook

12. Create Ansible Playbook

13. Running Our Ansible
Playbook

14. Ansible Variable Precedence
http://docs.ansible.com/ansible/playbooks_variables.html

15. Ansible Variable Precedence
• command line values (eg “-u user”)
• role defaults
• inventory file or script group vars

16. Reusing Playbooks from
others

17. Ansible Galaxy Authors

18. Adding geerlingguy.php

19. Overriding Variables

20. Overriding Variables

21. Adding ansible-role-php

22. Adding ansible-role-php

23. Running ansible-role-php

24. Production Inventory

25. Staging Inventory

26. Dev Inventory

27. ansible_playbook -i prod.ini <playbook>
ansible_playbook -i staging.ini <playbook>
ansible_playbook -i dev.ini <playbook>

28. Ansible can deploy
your code

29. General Ansible Advice
Use environment based playbooks & inventory files
for clear separation & to easily handle one off
differences
Use Python or some other environment variable
system for managing your secrets!
Couple variables to the most focused point, then raise
their scope as you need

30. Ansible Tower
https://www.ansible.com/products/tower

31. Ansible Tower
https://www.ansible.com/products/tower/pricing

32. AWX - Open Source Tower

33. AWX - Open Source Tower

34. Virtual Environments

35. Install Dependencies

36. Install Dependencies

37. Freeze Dependencies

38. Building a Deploy Playbook
http://vcdt.joeferguson.me/

39. Playbook File

40. deploy-vcdt-app Role

41. deploy-vcdt-app Role

42. Using Jinja2 Templates

43. Update the Repository

44. Composer Install

45. Application Setup

46. Job’s Done!

47. Break Up Large
YAML

48. System Maintenance

49. System Maintenance

50. Install & Configure Certbot

51. Create SSL & Cron

52. Combine SSL For HAProxy

53. Delayed Service Restarting

54. Renewal Post Hook Script

55. Renewal Post Hook Script

56. Install Docker

57. Install Docker

58. Add Users

59. Looping over Arrays (Hashes)

60. Keep Your Secrets
Secret!

61. Rolling Updates: Serial

62. Maximum Failure

63. Directory Layout

64. Directory Layout

65. Directory Layout

66. Joe Ferguson
Twitter: @JoePFerguson
Email: joe@joeferguson.me
Contact Info:
Thanks!