how to use variables from one role in another role

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1

Hi,
How to set a variable inside role A and use it inside role B ? Role B is listed in dependencies sections in meta/main.yml of role A and I see its output then call role A.
I have tried to use set_fact module or register variable, but no luck.

role A:
`

  • name: Print test var from another role
    debug: msg=“{{ test_var }}”
    `

role B:
`

  • name: Save some vars in register
    shell: echo “BLAH”
    register: test_var

  • name: Save some vars in facts
    set_fact:

test_var: BLAH
`

ansible-playbook’s Output:

fatal: [localhost] => One or more undefined variables: ‘test_var’ is undefined
FATAL: all hosts have already failed – aborting

If I set test_var via role’s parameter in site.yml, all works fine:

site.yml

`
2

If role A depends on B, then B will get handled first, _then_ A.

Any vars you set in B are visible in A, but not the other way round
(since B happens 'before' A and you haven't had a chance to set those vars).

3

If I use var/main.yml for storing variables, all works fine (variables from Role A and B seen in each role).
I want to symplify code in my roles and move generic code to separate role or playbook. Then I want to pass some variables from roles to this playbook (for creating directory structure, for example). I can’t save output from modules inside role A in variable and pass it to role B (even with set_fact module inside one server I see facts onle inside the role, where I create fact.)