Please describe how you plan to use ansible to deploy config in ~200k containers, with hundreds of data updates per day
The real "fish out of water" question is "tell me how to use Ansible to configure 200k embedded appliances where the end customer doesn't always allow firmware updates through their firewall?"
I would not use containers in the first place as this adds added complexity and overhead in the first place.
The real "fish out of water" question is "tell me how to use Ansible to configure 200k embedded appliances where the end customer doesn't always allow firmware updates through their firewall?"