How to undefine a variable?

[Weiwen Chen]

In the task I want undefine a variable. Is that possible?

[Weiwen Chen]

Help pls. I like to undefine a variable in a task.

[Ankit Kulkarni]

On Saturday, January 23, 2016 at 7:53:07 AM UTC+5:30, Weiwen Chen wrote:

Help pls. I like to undefine a variable in a task.

Setting the variable value to None could be one of the ways. You can try registering a variable value to 'None' while running the task . 

    - name: Register the value of FOO

      shell: echo VALUE

      register: FOO

 - name: Set the FOO variable value from stdout

      set_fact:

       FOO: "{{FOO.stdout}}"

Now when you access the variable FOO you will get the value None . 

   

[Weiwen Chen]

Thanks for the hint. Unfortunately the variable is defined by CLI with extra_vars option and set_fact is not effective to it. I think the real solution is to have set_global module, but not existing yet.