Kuma

Is It Down? Self-Hosted Monitoring with Uptime Kuma

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You need to know when your site is down. But paying for UptimeRobot or PagerDuty for a personal project feels wrong.

Uptime Kuma is the answer. It's a fancy, reactive status page and monitoring tool that you host yourself. It supports HTTP, TCP, Ping, DNS, and even Steam Game Servers.

The Setup

version: '3.3'

services:
  uptime-kuma:
    image: louislam/uptime-kuma:1
    container_name: uptime-kuma
    volumes:
      - ./uptime-kuma-data:/app/data
    ports:
      - "3001:3001"
    restart: always

Features

  1. Fancy UI: It looks like a modern SaaS product.
  2. Notifications: Telegram, Discord, Slack, Email, Gotify… it supports everything.
  3. Status Page: You can create a public status page (like status.example.com) to show your users that yes, you are working on it.

The "Certificate Expiry" Trick

One of my favorite features: Uptime Kuma can monitor your SSL certificates. Point it at your HTTPS domain, and it will alert you 7 days before your cert expires. No more expired Let's Encrypt surprises.

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