Hi Ulrich
How about a ‘for’ loop (in Jinja2) contained as a parameter to the set_fact
module, iterating the facts you gathered as presented in the {{ hostvars }}
magic variable?
Regards
Tom
On 4 January 2015 at 03:02, Ulrich Hochholdinger <
[email protected]> wrote:
Hi,
> I just started playing around with ansible and tried to achieve a simple
> operations task with it:
>
> Iterate over all nodes of my Xen-Cluster -- get free_memory of every node
> and sum up those values.
> next step would be making a decision e.g. spawning a new VM without
> overprovisioning the cluster.
>
> So I wrote a simple module which collects "xm info" values as
> ansible_facts. This was easy...
>
> Next step: write a playbook which sums up one of the collected fact
> (free_memory) -- here I got stuck and have no more ideas how to solve
> this...
>
> This is a not working idea:
>
> # vim:ft=ansible:
> ---
> - hosts: Cluster
> vars:
> # should be initially set to zero??
> sum_free_memory: "{{ sum_free_memory|int + xm_infos.free_memory|int }}"
> tasks:
> - name: gather xen facts
> xm_info:
>
> - name: show free_memory on host
> debug: msg="{{ xm_infos.free_memory|int }}"
>
> - name: increment sum_free_memory
> debug: msg="{{ sum_free_memory|int }}"
>
> => which obviously doesn't work:
> ERROR: recursive loop detected in template string: {{ sum_free_memory|int
> + xm_infos.free_memory|int }}
>
> So how can I sum up collected facts from more than one host?
>
> Cheers
> Ulli
>
>
> --
> 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 post to this group, send email to [email protected].
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/ansible-project/85495348-c277-40f4-ac7a-bade124f02c6%40googlegroups.com
> <https://groups.google.com/d/msgid/ansible-project/85495348-c277-40f4-ac7a-bade124f02c6%40googlegroups.com?utm_medium=email&utm_source=footer>
> .
> For more options, visit https://groups.google.com/d/optout.
>
--
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 post to this group, send email to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/ansible-project/CAAnNz0PREA8CCG-n0cvb%3DQMmOfXoWWBvocG%3D0KURMPFf73JqeA%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.
