Ansible Interview Questions

1. What is Ansible and what problems does it solve?

2. What is configuration management and why do teams need it?

3. What is the difference between Ansible and Terraform?

4. What is the difference between Ansible, Chef, and Puppet?

5. Why is Ansible called agentless and how does it connect to hosts?

6. What is an Ansible inventory and how do you define hosts and groups?

7. What is the difference between a static and a dynamic inventory?

8. What is an Ansible playbook and how is it structured?

9. What are Ansible tasks, plays, and modules?

10. What are Ansible modules and how do they execute on target hosts?

11. What is idempotency in Ansible and why does it matter?

12. What are Ansible roles and how do they organize automation?

13. What is Ansible Galaxy and how do you reuse community roles?

14. What are variables in Ansible and how does variable precedence work?

15. What are Ansible facts and how does gathering work?

16. What are handlers in Ansible and when do they run?

17. What are Ansible templates and how does Jinja2 work in playbooks?

18. What is Ansible Vault and how do you secure secrets?

19. What are conditionals (when) in Ansible playbooks?

20. What are loops in Ansible and how do you iterate over items?

21. What are tags in Ansible and how do you run parts of a playbook?

22. What are blocks in Ansible and how do you handle errors?

23. What is the difference between ansible and ansible-playbook commands?

24. How does Ansible handle privilege escalation with become?

25. What are ad-hoc commands in Ansible and when do you use them?

26. How do you test and debug Ansible playbooks?

27. What is Ansible Tower / AWX and what does it add?

28. How does Ansible manage cloud infrastructure and orchestration?

29. What are common Ansible best practices for large playbooks?

30. What are common Ansible anti-patterns and pitfalls to avoid?

31. Why does an Ansible task report 'changed' on every run and how do you fix it?

32. How do check mode and diff mode behave in practice, and when do they mislead you?

33. Your handler did not restart the service — what are the reasons a handler silently does not fire?

34. A variable has the wrong value at runtime — how do you debug Ansible variable precedence?

35. How do you operate Ansible Vault across many environments and rotate its keys?

36. What do delegate_to, run_once and delegate_facts actually do, and how do they interact?

37. How do async and poll work in Ansible, and how do you handle a task that outlives the SSH session?

38. A playbook takes hours against a large inventory — how do you diagnose and speed it up?

39. How do you test an Ansible role with Molecule, and what does a good scenario cover?

40. How do you control what happens when a task fails on some hosts but not others?

41. How do you manage Ansible collections, FQCNs and version pinning in a production repository?

42. What are Ansible execution environments and how do they change how you run playbooks?

43. How do you manage Windows hosts with Ansible, and what changes compared with Linux targets?

44. How does Ansible automate network devices, and why do network plays use different connection plugins?

45. How do you capture, audit and monitor Ansible runs using callback plugins?

46. How do you gate Ansible content in CI with ansible-lint, and what belongs in the pipeline beyond linting?

47. How does Ansible fact caching work, and when is enabling it the right call?

48. How do you build a reliable dynamic inventory with inventory plugins, keyed groups and constructed vars?

49. When should you write a custom Ansible module, and what does a well-behaved module have to implement?

50. How do filter, test and lookup plugins differ in Ansible, and when would you write your own?

51. How do you harden an Ansible control node and its access to managed hosts?

52. How do you upgrade ansible-core safely and deal with deprecation warnings across a large repository?

53. How do you make shell and command tasks idempotent and safe in Ansible?

54. How do the linear and free strategies change an Ansible run, and how do they interact with forks and serial?

55. When do you need meta: flush_handlers, and what determines the order handlers run in?

56. How do you choose between Ansible Vault and an external secret store, and how do you combine them?

57. How do you build inventory groups dynamically with the constructed plugin and group_by?

58. How do you use failed_when, changed_when, block/rescue/always and ignore_errors to control failure in Ansible?

59. A playbook works everywhere except one host. How do you find out why?

60. What do SSH pipelining and connection multiplexing actually change in an Ansible run?

61. Why does a value set with set_fact on one host not appear on another, and how do you share it?