Ternary or when in ansible

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1

Hi Ansible experts

I am confused which one to use

I want to subscribe US servers default but if the server is in UK I want to subscription should Point to UK capsule server…

If IS_UK= TRUE
Subscription-manager
then

Subscription-manager

Regards

2

Is “Subscription-manager” a command you want to run, or part of a string you’re trying to initialize, or are you trying to set a variable for later use?
Is “IS_UK” a variable you already have, or is the problem how to create or set “IS_UK” itself?

In other words, you’ve described very well what you want to do, but you haven’t described at all the problem(s) you’ve encountered doing it with Ansible.

3

Hi TODD,

Thanks for your reply.
Yes I ve that variable(IS_UK= TRUE)
defined already and it is coming from upstream.
Just need to the logic for efficient if then syntax in ansible.

Secondly subscription manager is shell command.

Regards
Prady

4

Hi again

For simplicity I thought to do like this.

Current code

  • name: Subscribe my repo
    shell: |
    subscription-manager register bla bla

After

  • name: Subscribe US REPO
    shell: |
    subscription-manager register US server

When:
IS_UK = false

  • name: Subscribe UK REPO
    shell: |
    subscription-manager register UK server

When:
IS_UK = True

Regards
PD

5

I would use a helper variable to you can reuse in some places, for example in the task title:

vars:
IS_UK: false
server: “{{ IS_UK | ternary(‘UK-server’, ‘US-server’) }}”

tasks:

  • name: “Subscribe to {{ server }} repo”
    ansible.builtin.shell:
    echo subscription-managed register {{ server }}
6

Thanks Dick that’s what I needed