Resolve DNS / gather_facts

[Nico K.]

Hi,

I've been reading through a lot of posts regarding the subject of "fact gathering" and I'm under the impression that it's impossible to force fact gathering on hosts when using '--limit'?
My specific use case would be obtaining IP addresses of all hosts to populate the firewall ruleset with.

Ideally I would like to force gathering the facts on a couple of the groups I have defined no matter what the '--limit' is set to.

For the time being, is there a work around? Is there an easy way to resolve a DNS entry?

Thanks,
Nico

[Michael DeHaan]

You cannot force fact gathering on other hosts not in the limit group when using --limit.

The solution is to not use limit and do something like:

- hosts: all

  gather_facts: True

  tasks: []

- hosts: "somegroup{{optional_limit|default('')}}"

   tasks:

      -

And run ansible-playbook sometimes with

ansible-playbook foo.yml -e "optional_limit=&boston"

If you need the behavior.

I agree that's gross.

What we really need to do is be able to allow "--limit" to control the default limit, and at play level allow a "limit: all" to be passed in (which should be the default).

Pull requests to this effect, if sufficiently clean would be entertained.

I think that's nicer than having to do go through those hoops above.

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