This tiny Docker container monitors my entire network and alerts me before things break

Uptime Kuma is a lightweight, self-hosted monitoring tool packaged as a Docker container that tracks uptime, latency, and SSL certificate expiry for home lab services. Setup involves a simple docker-compose.yaml file and takes seconds. It supports 90+ notification integrations (Discord, Telegram), maintenance windows to suppress alerts during planned downtime, and can monitor 50+ devices at no cost. Key advice: host the monitor on a separate low-power device from the services it watches so alerts still fire when the main server goes down.