ansible apt-key module with loop - loops

Question

I'm provisioning a system that requires multiple GPG keys to be added. I'm attempting to streamline the process and follow DRY principals.
I have apt packages installing from a vars list like so:
- name: Install packages
apt: name={{ apt_packages }}
Where my vars.yml looks like this:
apt_packages:
- tilix
- terraform
- ansible
- opera
This works because the apt module accepts comma separated inputs and parses accordingly.
So I'm trying to achieve a similar process when using the apt_key module but I can't seem to get it to work. Here are a couple of attempts I've made:
- name Add keys
apt_key:
url: url="{{ items }}"
loop: "{{ gpg_keys }}"
state: present
and
- name: Add GPG Keys
apt_key:
url: url="{{ gpg_keys }}"
state: present
Both throw different errors.
Is it possible to do something like this using the apt-key module? Obviously I'm trying to avoid having a separate caller for each key I want to add as there will be many keys and I'd like to be able to add additional keys later on by simply appending the list in vars.yml.

Answer 1

You have a few small mistakes in your task.
The right way is this:
- name: Add keys
apt_key:
url: "{{ item }}"
state: present
loop: "{{ gpg_keys }}"
you already have the key url, so prepending url= is incorrect
loop is an argument to the task and not to the apt_key module, so it needs to be indented to the level of apt_key (unlike url which is an argument to the model)
Sidenotes:
You also need to make sure that gpg_keys contains a list, similar to apt_packages.
The name parameter of apt accepts a list, as you define correctly in your vars.yml, no comma-separated string. (You are already doing it right)
Documentation:
apt
apt_key