DevOps · Flashcard
What is a handler in Ansible?
- AA task that runs only when another task notifies it of a change
- BA task that runs first in every play, before the others start
- CA task that Ansible retries automatically until it succeeds
- DA task that is skipped unless the play is run with --tags
Why this is the answer
A handler is an ordinary task that sits idle until a task notifies it, and only a changed result does the notifying — which is how a service is restarted exactly when its configuration changed. Running first is pre_tasks, retrying is until with retries, and tag selection is unrelated to notification.
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