On 18.12.2017 04:59, [email protected] 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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