LIMIT as extra_vars

Archives AWX Project
1

In AWX, you can pop-up ‘LIMIT’ option to limit the host list for playbook run.

Is it possible to take the value of LIMIT like --extra-vars

I have a python script to take the value from --extra-vars on playbook running and want to use the value of ‘LIMIT’ as well.

Thanks,
Jerry

2

Hi,

You may want to take a look at https://docs.ansible.com/ansible/latest/reference_appendices/special_variables.html
I think what you want is to use the ansible_limit variable.

Cheers!

3

Hi Jerry,

We do precisely this by setting an arbitrary variable with the ‘—limit’ value and using that variable in the ‘hosts’ field. It works just fine.

Rod

4

Hi Rod,

The python script I mentioned is ansible callback plugin
https://docs.ansible.com/ansible/latest/plugins/callback.html

When I use --extra-vars “host_limit=linux1”
the callback plugin takes the value like this

vm = play.get_variable_manager()
self.hosts = vm.extra_vars[“host_limit”]

In AWX, we would like to use the ‘LIMIT’ option instead of --extra-vars.

Do you know how the callback plugin can take the value of ‘LIMIT’?

Thanks,
Jerry