Ask for variable value if variable not defined.

[Marcin Prączko]

Hi,

Have question whether is possible (ansible 1.4.2 >) setup prompt for volue for variable in variable is not defined.

For example:
First run of playbook:
- variable is not defined
- ask for value
- task write value of variable to some ansible vars file

... Do other tasks...

Next run of playbook:
- variable is read from ansible vars file
- no prompt for value


... Do other tasks ....

Tried find this in ansible help, but so far no luck.

Best regards,
Marcin Praczko

[Michael DeHaan]

There's no mechanism for this.

vars_prompt always prompts for the variable.

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[Adam Heath]

The following is pseudo code, parts of it may not be entirely correct.
But the real trick is to use when.

==
- name: ask for variable
when: my_var_name is not defined
register: my_var_name_result
vars_prompt: .....

- name: save vars
when: my_var_name_result.changed
$action:

==

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[Serkan C.]

Hi Micheal,

Do you have any advice for it? It doesn't accept when condition.

Best.

[Michael DeHaan]

As politely as possible... Please don't share made-up syntax on this list, it confuses everyone :)

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Michael DeHaan <mic...@ansibleworks.com <mailto:michael@ansibleworks.com>>

CTO, AnsibleWorks, Inc.
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[Michael DeHaan]

Nope, it doesn't do this.  Simple as that :)

I'd suggest setting a role default instead, or putting a good default value in group_vars/all, and you can override that on the CLI with "-e".

vars_prompt in Ansible is not *usually* a good idea as it limits the ability of someone to automate a workflow in Ansible, since it's interactive.

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[Serkan C.]

Hi,

You're right, i was using default variables and extra parameters to override but i thought that maybe i can also use it for basic system playbooks.

Thanks.