reference role default variable

[Michael Ströder]

HI!

I'd like to override a default for

var_b defined in roles/role_b/defaults/main.yml

with a value of

var_a defined in roles/role_a/defaults/main.yml

Is this possible?
Can I reference role vars?
Or is this rather a use-case of include_role?

Ciao, Michael.

[Stefan Hornburg (Racke)]

Can you please explain your actual use case instead of describing your problem with bogus variable and role names?

Regards
Racke

--
Ecommerce and Linux consulting + Perl and web application programming.
Debian and Sympa administration. Provisioning with Ansible.

[Vladimir Botka]

On Wed, 18 Mar 2020 13:53:09 +0100
Michael Ströder <mic...@stroeder.com> wrote:

> I'd like to override a default for
> var_b defined in roles/role_b/defaults/main.yml
>
> with a value of
>
> var_a defined in roles/role_a/defaults/main.yml
>
> Is this possible?

If you import the roles try (not tested)

shell> cat roles/role_b/defaults/main.yml
var_b: "{{ ('role_a' in ansible_role_names)|
ternary(var_a, 'var_b_default_in_role_b') }}"

> Can I reference role vars?

Yes. Simply reference the variable. For example

- debug:
var: var_b

> Or is this rather a use-case of include_role?

Include role is more complex because the variables of the included role might
be available in the playbook after the include. See attribute "public"
https://docs.ansible.com/ansible/latest/modules/include_role_module.html#parameter-public

HTH,

-vlado