Use items from task condition in template

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1

Hello.

Please tell me how I can use items from task condition in template. Or other method, how I can decide my probled.
goal: I have a template for /etc/network/interfaces file. I want to set up bond interface, which contains the parameter “slaves XXX XXX XXX”, where XXX - name of interface.
I want use only interfaces, which name match ethX regex, for example “slaves eth0 eth1”.
How I can do this template with ansible, maybe I should use ansible_interfaces variable or should use shell for register intefaces names?

2

I’m not sure what you mean you say “use items from the task condition”, but you can in fact use conditionals with your template.

Take a look at the Jinja2 documentation, and you’ll see things like

{% if x %}

{% else %}

{% endif %}

and these can be put in your .j2 files.

I might have misunderstood the question.

3

example:

  • name: create /etc/network/intefaces file
    template: src=xxx dest=xxx
    with_items: ansible_interfaces
    when: item | match(“eth*”)

and in template I need:
…
slaves eth0 eth1 eth2 ethX

…

4

{{ ansible_interfaces }} will be available in the template and you’ll be able to loop over it in the template logic.

Do not use with_items on the template task, as this will result in writing the file N different times, and will not do what you want.