I have finally got my selfhost wiki up to a satisfying shape. Its here: https://wiki.gardiol.org
Take a look i hope it can help somebody.
I am open to any suggestions about it.
Note: the most original part is the one about multi-homed routing and failbacks and advanced routing.
Might be worth adding a section for web UIs that make managing certain things easier. For example, Cockpit or Nginx Proxy Manager.
I think NPM is useless and can get things more messy, but I plan to check on cockpit later on indeed.
What lead you to believe NPM is useless/messy?