I built a Docker monitoring tool because my "monitoring setup" was 5 tabs and a prayer

Solo dev, Bordeaux, France. Just shipped Maintenant — a single container that monitors your entire Docker/K8s stack.

Why

I run about 40 containers on a VPS. At some point I realized my monitoring "strategy" was Uptime Kuma in one tab, Healthchecks.io in another, a bash script I wrote at 2am for SSL certs, Portainer just to see if stuff was alive, and me doing docker pull every few weeks hoping nothing was critically outdated. Very professional.

I looked for one tool that did all of it. Didn't exist. So now it does.

What it does

You mount the Docker socket read-only, start the container, and 30 seconds later you have: container tracking with CPU/RAM metrics, HTTP/TCP endpoint probing, heartbeat URLs for cron jobs, SSL cert monitoring, image update detection from OCI registries (spots risky version jumps), network security checks (catches your Postgres port chilling on 0.0.0.0), and a public status page.

Single Go binary. <20 MB RAM. SQLite. No Postgres, no Redis, no "just add these 4 other containers." Also works on Kubernetes, auto-detected.

How I plan to eat

AGPL-3.0, full code on GitHub, Pro features included and visible. Community edition is the real product — complete, no nag screens, no "upgrade to unlock basic stuff."

Pro is 9€/mo for Slack/Discord/Telegram alerts, K8s support, CVE detection. Same binary, license key unlocks it.

Target: 5-12K€ ARR in two years. Not building a unicorn. Building something that still exists and still works in 5 years without a pivot to enterprise. The self-hosting crowd can smell a future rug-pull from miles away, and I respect that.

Where I'm at

v1.0.0 is out. Zero revenue (just launched). Reddit banned my account during the launch attempt and HN has restricted Show HN posts for newer accounts, so thats going great. Currently focusing on newsletters, YouTube creators, and not losing my mind.

If you've launched a self-hosted tool before and have advice on distribution channels that don't require 6 months of karma farming, I'm all ears.

maintenant.dev — github.com/kOlapsis/maintenant