Ansible version: 2.0.0.2
I need to override role default variables through inventory host variables. As far as I understand reading Variable Precedence: Where Should I Put A Variable? in Ansible Docs, it is possible but maybe it could not be a best practice, but unfortunately it is necessary that some hosts tweak some default configuration parameters.
I'm going to reproduce the real case, so let's consider the following directory hierarchy:
├── debug.yml
├── host_vars
│ └── test.localdomain
├── inventory
│ └── debug
└── roles
└── debug
├── tasks
│ └── main.yml
└── vars
└── main.yml
debug.yml is our playbook file.
---
- name: debug
hosts: debug
roles:
- debug
host_vars/test.localdomain contains the variables I want to take precedence over defaults.
---
foo:
bar:
- hey
inventory/debug is the inventory file we're going to use.
[debug]
test.localdomain
roles/debug/tasks/main.yml prints out foo.bar variable.
---
- debug: msg="{{foo.bar}}"
roles/debug/vars/main.yml contains default role variables.
---
foo:
bar:
- hello
- world
At this point, I expect that during debug playbook run, the value of foo.bar is [ "hey" ], but evidently I'm wrong:
> ansible-playbook debug.yml -i inventory/debug
PLAY [debug] **********************************
TASK [setup] **********************************
ok: [test.localdomain]
TASK [debug : debug] **************************
ok: [test.localdomain] => {
"msg": [
"hello",
"world"
]
}
PLAY RECAP *************************************
test.localdomain : ok=2 changed=0 unreachable=0 failed=0
Running debug module from ansible cli gives me the expected result, so I'm quite sure the host variables are evaluated correctly, but maybe for some reason they're not taking precedence over default role variables.
> ansible test.localdomain -i inventory/debug -m debug -a 'msg="{{foo.bar}}"'
test.localdomain | SUCCESS => {
"msg": [
"hey"
]
}
Where is my mistake?
