I've got a play that ensures some servers are created, then ensures a
domain for those servers exists in DNS, then ensures A records exist
within that domain for each server.
I want the domain ensure to run once, not 10x time, so I have a
construct like:
when: inventory_hostname == play_hosts[0]
so that it only runs on the first host of the play.
This works, so long as that first host doesn't have a failure ensuring
that it exists.
This is pretty awkward, and I'm wondering what other folks have for a
"run once" construct.
I had thought about touching a file locally when the DNS API call is
done to create the domain, but that's racy, because this is a multi-fork
play so multiple forks would be attempting this at once.
-jlk
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