Building Single Sign-On for My Homelab with Authentik and Grafana

Introduction

Like many people running a homelab, I found myself with a growing collection of self-hosted services—Grafana for monitoring, Uptime Kuma for alerts, Portainer for container management, and more.

Each service worked well on its own, but there was one problem:
every service had its own login.

It wasn’t just inconvenient—it also didn’t scale. Managing users, credentials, and access across multiple applications quickly becomes messy.

Early in my career I worked as an intelligence analyst, a role that taught me how to work with incomplete information, evaluate sources, and build narratives from scattered data points. Over the years I’ve found myself applying those same skills in unexpected places. One of the most interesting examples has been genealogy — the study of family history.

My maternal grandmother developed a deep interest in our ancestry late in her life and passed that curiosity on to me. My original goal was simple: learn more about where my family came from and who my ancestors were. But as my research evolved, I realized I was approaching genealogy the same way I approached intelligence work — identifying patterns, validating evidence, and following threads wherever they led.

The Problem

Yesterday morning, I had discovered that my automatic feeder on my aquarium had dumped its entire hopper in the aquarium (not a big deal, it was almost empty), and was unable to retract the hopper to the original position. I initiated a manual feed via a button on the back, and the hopper would just spin and never return to initial start position.

I initially thought that the gear mechanism had just gotten misaligned or stuck, I disassembled the feeder and reset the gears so that everything was in the correct initial state. Upon testing I ended up with the same result. This now meant that I had to figure out how the feeder knows when to retract the hopper back to the initial state at the end of the feed cycle.

The Dunning-Kruger Effect is often used to explain overconfidence, but I don’t think we talk enough about its opposite effect.

As someone who’s spent years as a “jack of many trades,” I’ve found myself well past the “Peak of Mt. Stupid” in several areas, now sitting somewhere between the “Valley of Despair” and the “Slope of Enlightenment.” With experience comes perspective, and with perspective comes the uncomfortable awareness of just how much there is to learn.

Background

I have a 135gal saltwater aquarium in my office full of coral and several fish. The system is fairly automated, it is controlled by a commercially available aquarium controller running custom rules that I have programmed into it to control heaters, supplement dosing, pumps, UV sterilizer, Ozone reactor, etc. I’ll probably make a post at some point in the future explaining the setup.

The supplement dosing is the trickiest part of the whole system, it requires constant water parameter testing to ensure that the correct amount of supplements are being dosed, and I also have to ensure that I don’t run out of the supplements. As I get busy with life, kids, work, etc, inevitably I forget to check the containers of supplements and the system doses nothing to the tank for days or weeks until I remember to check them.