I have 2 roles (r1 and r2), r2 depends on r1 and the dependency overrides a
variable (x). I would expect the overridden value to only apply while r1 is
run as a dependency. However the overridden value gets applied throughout
the entire play.
If r1 is run in it's only play, without r2, then I get the value from
group_vars/ as I expect.
Below is a minimal reproduction. Have I found a bug, or am I
misunderstanding how Ansible variables are scoped?
With thanks, Alex
# group_vars/g1
x: set by group_vars
# roles/r1/tasks/main.yml
- debug:
var: x
# roles/r2/meta/main.yml
dependencies:
- role: r1
vars:
x: overridden by dependency
# roles/r2/tasks/main.yml
- debug:
var: x
# inventory
g1:
hosts:
localhost:
# playbook.yml
- hosts: g1
connection: local
roles:
- r1
- r2
# ansible.cfg
[defaults]
stdout_callback=yaml
:/tmp/test [v]$ ansible-playbook -i inventory playbook.yml
PLAY [Play that includes dependency]
******************************************************
TASK [Gathering Facts]
********************************************************************
ok: [localhost]
TASK [r1 : debug]
*************************************************************************
ok: [localhost] =>
x: overridden by dependency
TASK [r1 : debug]
*************************************************************************
ok: [localhost] =>
x: overridden by dependency
TASK [r2 : debug]
*************************************************************************
ok: [localhost] =>
x: overridden by dependency
PLAY [Play that excludes dependency]
******************************************************
TASK [Gathering Facts]
********************************************************************
ok: [localhost]
TASK [r1 : debug]
*************************************************************************
ok: [localhost] =>
x: set by group_vars
PLAY RECAP
********************************************************************************
localhost : ok=6 changed=0 unreachable=0
failed=0
:/tmp/test [v]$ ansible-playbook --version
ansible-playbook 2.7.6
config file = /tmp/test/ansible.cfg
configured module search path = [u'/home/alex/.ansible/plugins/modules',
u'/usr/share/ansible/plugins/modules']
ansible python module location =
/tmp/v/local/lib/python2.7/site-packages/ansible
executable location = /tmp/v/bin/ansible-playbook
python version = 2.7.15rc1 (default, Nov 12 2018, 14:31:15) [GCC 7.3.0]
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