Conditional fail

ansible_test.yml

---

- hosts: localhost
  connection: local
  tasks:
    - set_fact:
        is_test: "{{ env == 'development' or 'test' in env }}"

    - set_fact:
        security_group: blah
      when: is_test

    - set_fact:
        security_group: blurh
      when: not is_test

    - debug: msg="is_test={{ is_test }}"
    - debug: msg="security_group={{ security_group }}"

output_test_false

[root@localhost ansible]# ansible-playbook -i 'localhost,' test.yml  -e 'env=prod'

PLAY [localhost] **************************************************************

GATHERING FACTS ***************************************************************
ok: [localhost]

TASK: [set_fact ] *************************************************************
ok: [localhost]

TASK: [set_fact ] *************************************************************
skipping: [localhost]

TASK: [set_fact ] *************************************************************
skipping: [localhost]

TASK: [debug msg="is_test={{ is_test }}"] *************************************
ok: [localhost] => {
    "msg": "is_test=False"
}

TASK: [debug msg="security_group={{ security_group }}"] ***********************
fatal: [localhost] => One or more undefined variables: 'security_group' is undefined

FATAL: all hosts have already failed -- aborting

PLAY RECAP ********************************************************************
           to retry, use: --limit @/root/test.retry

localhost                  : ok=3    changed=0    unreachable=1    failed=0

output_test_true

[root@localhost ansible]# ansible-playbook -i 'localhost,' test.yml  -e 'env=test'

PLAY [localhost] **************************************************************

GATHERING FACTS ***************************************************************
ok: [localhost]

TASK: [set_fact ] *************************************************************
ok: [localhost]

TASK: [set_fact ] *************************************************************
ok: [localhost]

TASK: [set_fact ] *************************************************************
skipping: [localhost]

TASK: [debug msg="is_test={{ is_test }}"] *************************************
ok: [localhost] => {
    "msg": "is_test=True"
}

TASK: [debug msg="security_group={{ security_group }}"] ***********************
ok: [localhost] => {
    "msg": "security_group=blah"
}

PLAY RECAP ********************************************************************
localhost                  : ok=5    changed=0    unreachable=0    failed=0