- hosts: headnode
tasks:
- ... # run once stuff goes here
- hosts: webservers
tasks:
- ... # stuff to do to everything
Alternatively:
when: inventory_hostname == groups['webservers'][0]
On Fri, Dec 19, 2014 at 8:55 AM, Nico K. <[email protected]> wrote:
> Hi,
>
> I have groups of hosts that I copy files to, one those files are copied I
> call a webservice on the groups master; this webservice will call a
> deployment script.
> The problem I'm having is that the webservice call will be made for every
> host but it only needs to be called once per group. The 'run_once' syntax
> doesn't help me since if there are multiple groups it will only run once
> for everything.
>
> Illustrated
>
> group1:
> host1
> host2
> host3
>
> master1
>
> group2:
> host4
> host5
> host6
>
> master2
>
> - task runs to populate host*
> - Webservice on groupX is called for each host
> - When limiting with "run_once"only one group's webservice would be called
>
> Ideally we would have something like 'run_once_per_group'. The only
> solution I see at the moment is splitting out the webservice call in a
> separate playbook which only runs on the 'masters'.
> Any other ideas / approaches are welcome.
>
> Thanks,
> Nico
>
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