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DevOps / Ansible Interview questions

What is the difference between ansible-playbook and ansible ad-hoc commands?
ansible (ad-hoc)ansible-playbook
Runs a single module against hosts from the command line.Runs a YAML file describing multiple plays/tasks.
Good for quick, one-off checks or fixes.Good for repeatable, version-controlled automation.
Not typically saved or reused.Saved, reviewed, and re-run consistently over time.

# Ad-hoc: quick one-off check
ansible webservers -m ansible.builtin.ping

# Playbook: repeatable, structured automation
ansible-playbook site.yml

Ad-hoc commands are ideal for quick, throwaway operations, like checking connectivity, restarting a service on a handful of hosts, or grabbing a fact, where writing a whole playbook would be overkill. ansible-playbook is the tool for anything that should be repeatable, reviewable, and version-controlled, since a playbook can express multi-step logic, handlers, conditionals, and roles that a single ad-hoc command simply can't.

Which is better suited to a quick, one-off connectivity check?
What can ansible-playbook express that a single ad-hoc command can't?

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