Resposta vazia do módulo do shell Ansible

Question

Quando executo o comando "who am i" usando o módulo de shell do ansible, recebo uma resposta vazia, não consigo descobrir por quê?

  hosts: server1
  remote_user: devops
  become: true
  tasks:
    - name: print current user
      shell: who am i
      register: userr
    - debug:
        msg: "{{ userr.stdout }}"

[root@ansible test]# ansible-playbook test.yml 

PLAY [test playbook] ********************************************************************************************************************************

TASK [Gathering Facts] ******************************************************************************************************************************
ok: [server1]

TASK [print current user] ***************************************************************************************************************************
changed: [server1]

TASK [debug] ****************************************************************************************************************************************
ok: [server1] => {
    "msg": ""
}

PLAY RECAP ******************************************************************************************************************************************
server1                    : ok=3    changed=1    unreachable=0    failed=0 

    

Answer 1

O motivo pelo qual eu penso é que ansible não está usando um shell de login para executar o comando. Então o comando não está exibindo nada.

If you replace: 

who am i

with:

su - anotheruser; who am i

Você deve ver uma saída.