Documentation found in this site comes from our experience in real scenarios.

Nixheiser.org will provide guides for common administration problems We can find in real world scenarios, indeed most of the information you'll find in the site come from deployments we have done; the only thing We do not cover is the security you have to apply as this varies depending on your needs and hardware.

What We do provide is the main configuration as when We get a deployment in a working condition prior to production.