gather_facts: ansible_hostname only

[John Harmon]

Is there a way for me to specify the only fact I care about gathering?  I have a server that is giving me grief due to the way its disks are setup (tons of nfs shares, etc).... at least I assume that is why it is giving me grief.  I just need to gather the ansible_hostname fact.

[John Harmon]

The following works on the command line, but I can't seem to find the right syntax to put it into a playbook:

root@ansible:/playbooks # ansible -m setup -a 'filter=ansible_hostname' ansible-oel6
ansible-oel6 | SUCCESS => {
    "ansible_facts": {
        "ansible_hostname": "ansible-oel6"
    },
    "changed": false
}

[Matt Martz]

The most minimal you can do, and still get that would be to define:

gather_subset: platform

It will include ansible_hostname, plus a few extras.

On Tue, Jan 23, 2018 at 11:42 AM, John Harmon <jharmon...@gmail.com> wrote:

Is there a way for me to specify the only fact I care about gathering?  I have a server that is giving me grief due to the way its disks are setup (tons of nfs shares, etc).... at least I assume that is why it is giving me grief.  I just need to gather the ansible_hostname fact.

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Matt Martz
@sivel
sivel.net

[John Harmon]

Thanks Matt.  It seems platform and !all,min equate to the same thing.  I tried the following in my playbook and it works:

  pre_tasks:
    - setup:
        gather_subset: min
        filter: ansible_hostname

On Tuesday, January 23, 2018 at 10:59:23 AM UTC-7, Matt Martz wrote:

The most minimal you can do, and still get that would be to define:

gather_subset: platform

It will include ansible_hostname, plus a few extras.

On Tue, Jan 23, 2018 at 11:42 AM, John Harmon <jharmon...@gmail.com> wrote:

Is there a way for me to specify the only fact I care about gathering?  I have a server that is giving me grief due to the way its disks are setup (tons of nfs shares, etc).... at least I assume that is why it is giving me grief.  I just need to gather the ansible_hostname fact.

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[Kai Stian Olstad]

On Tuesday, 23 January 2018 19.09.06 CET John Harmon wrote:
> Thanks Matt. It seems platform and !all,min equate to the same thing. I
> tried the following in my playbook and it works:
>
> pre_tasks:
> - setup:
> gather_subset: min
> filter: ansible_hostname

gather_subset is also allowed on the play[1] level.

- hosts: all
gather_subset: min


[1] https://docs.ansible.com/ansible/latest/playbooks_keywords.html#play

--
Kai Stian Olstad