Hi Kai, and thank you so much for the help.
So using the method you recommended, I'm now able to get my 10 files, using
the following task:
- name: Create json blobs
template:
src: pin-nm.json.j2
dest: ~/blobs/pin-nm{{ item.index }}.json
with_indexed_items:
- "{{ groups['external_yarn_bare_metal_nodes'] }}"
Frustratingly, though, that gives me ten files named thusly:
pin-nm<built-in method index of list object at 0x7fa45b58dc20>.json
Any idea how to pull out the index number, or perhaps an idea of where I
can find either the documentation for the functions available to me using
with_indexed_items, or the source code? I hate to have to ask questions
like these, but I'm just not making the leap, here.
Thank you,
ap
On Tuesday, December 19, 2017 at 4:54:08 PM UTC+11, Kai Stian Olstad wrote:
>
> On 18.12.2017 04:59, [email protected] <javascript:> wrote:
> > Hi,
> >
> > I'm trying to create a batch of json files, that will pull values from
> > an
> > inventory group.
> >
> > Ideally, what I would like to have happen is 10 different files are
> > created
> > (the inventory group has 10 nodes in it), using both the position of
> > the
> > node in the inventory list and the fqdn of the node as the values that
> > are
> > populated into these json files.
> >
> > At this point, what I'm not sure how to do it create 10 separate files
> > (I
> > can create one big one), which uses the aforementioned values.
> >
> > My template (this is what generates the one big file:
> >
> > {% for node in groups['yarn-nms'] %}
> > {
> > "instanceId": "{{ loop.index }}",
> > "name": "yarn-nm",
> > "cluster": "stg",
> > "image": "{{ image }}",
> > "instance": {
> > "cpu": 24,
> > "mem": 80000
> > },
> > "constraints": [[ "hostname", "CLUSTER", "{{ node }}" ]]
> > }
> > {% endfor %}
> >
> >
> > I tried stuffing that loop into the task that creates the json files:
>
> One task, one file. If you need 10 files you need to loop the task and
> the json in the template.
>
>
> > ---
> > - name: Make directory for json blobs
> > file:
> > path: ~/blobs
> > state: directory
> >
> > - name: Create json blobs
> > template:
> > src: pin-nm.json.j2
> > dest: ~/blobs/pin-nm{% for node in groups['yarn-nms'] %}{{
> > loop.index }}{% endfor %}.json
> >
> >
> > but instead of giving me 10 different files, it gave me one file named
> > pin-nm12345678910.json. And not surprisingly, the template didn't
> > inherit
> > any values.
>
> Ansible is just going to create one file as you have seen, and the
> template loop for dest is fully expanded.
>
>
> >
> > Can anyone offer any suggestions on how to create the 10 separate
> > files,
> > with the values passed through to the templates? Or even just how to
> > create
> > a loop that creates the 10 different files - I'm pretty sure I could
> > figure
> > it out from there.
>
> Remove the loop in the template file and create the loop on the task,
> you can use with_indexed_items[1] for this
>
>
> [1]
>
> http://docs.ansible.com/ansible/latest/playbooks_loops.html#looping-over-a-list-with-an-index
>
>
> --
> Kai Stian Olstad
>
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