On 1/30/20 1:48 AM, Eric S wrote: > Hi Folks, > I am looking for a simple way to have Ansible perform the following > automation for me: > > 1. From a set of N hosts, find out which host has the lowest CPU usage at > the moment > 2. Run a command on *only that host*. > > This pattern could be extended to a general case of: > > Run a command on a subset of hosts matching a condition which is not > static. > > > This could apply for the following types of use cases: > > * Find out which hosts are running low on disk space, and only expand disk > space on the hosts which are running low > * Find out which hosts are lacking a particular upgrade, and only upgrade > those hosts > * Only run a command on machines which are not currently under heavy load > > This seems like a common and desirable enough pattern, but as far as I can > tell there is not a well defined way to > execute this with Ansible. Is there a simple way to do this with a playbook, > or do I need to write a strategy plugin? > > Thanks, > Eric
Hello Eric,
you could try to add the hosts to a new group with the "add_host" module and
execute the command with delegate_to in
a loop over the hosts in that group.
Regards
Racke
>
> --
> You received this message because you are subscribed to the Google Groups
> "Ansible Project" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to
> [email protected]
> <mailto:[email protected]>.
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/ansible-project/8425baa9-e324-4f1f-a459-8ca35cca3a54%40googlegroups.com
> <https://groups.google.com/d/msgid/ansible-project/8425baa9-e324-4f1f-a459-8ca35cca3a54%40googlegroups.com?utm_medium=email&utm_source=footer>.
--
Ecommerce and Linux consulting + Perl and web application programming.
Debian and Sympa administration. Provisioning with Ansible.
--
You received this message because you are subscribed to the Google Groups
"Ansible Project" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/ansible-project/dacdd476-4860-aba0-f0b8-12d647d8c55a%40linuxia.de.
signature.asc
Description: OpenPGP digital signature
