Tbh I didn't spend much time going deeper into the project. At this moment the quickstart guide was sufficient for me. Nevertheless did I stumble upon some things that I need to clear for myself in the future. Some bugs and also difficult to remember stuff. Here is a very small list (because it is really good programmed and also documented).
1. What if : ERROR: Ansible could not initialize the preferred locale: unsupported locale setting when trying to run bootstraph.sh or ot-userdel?
Just paste this line of code before running the scripts:
export LC_ALL="C.UTF-8"
That should do the trick. If it happens frequently you can also add the line in the bashscript.
2. User deletion
Don't try to manually delete users, you are just making it worse. Use the script ot-userdel.
If you already tried to delete one manually then just add the user in the configuration.yaml and after running the bootstrap.sh try to use the ot-userdel again