Hello - is this log file located in the server where Ansible is installed or remote server ?
Not sure how you are initiating your playbooks. Here is what I did.
I initiated my playbooks from a shell script and parsed the output in the script.
What may work is using Ansible Modul script.
It returns e.g. as stdout only the requested string.
It’s solved. I was asking about regex. But I couldn’t see your solution.
Thankyou!