It's a balancing act of using the right toolset with regards to project complexity. Are your current bash scripts simple to maintain and scaling with the project? If so, perhaps it's best to leave them for now. If not, then consider more powerful tools such as Ansible to handle configuration management.
With that being said, I'm working on a mildly complex K8S project which grew to a point where it made sense to switch to Ansible. We're still using one or two bash scripts, but everything else has been ported. I won't look back!
