It can be in git even if you’re not doing ‘config as code’ or ‘infrastructure as code’ yet/ever.
I have some of this. I have an ansible playbook I use to do initial vm/lxc setup and I’ve built out a number of roles. But none of my systems are to a point were I could just delete the vm, spin a new one up, point ansible at it, and pickup where I left off.
The one thing I have that probably closest to this is my internal BIND zones, which double as my IPAM. I’ve been fairly diligent about committing changes and documenting what the change was.