Introduction

Central Logging is a self-hosted centralized logging and monitoring system that is designed to be low maintenance and easy to deploy. It is distributed as a single binary that serves an HTTPS web interface and API.

Who is it for?

Central Logging can handle all logging and monitoring tasks required by most small-businesses and projects. We are currently targeting to support retaining less than a few terabytes of logs. There are no hard limits but things may not operate as smooth as they should if you go over several TB.

Features

• Log Aggregation — Collect logs from any source via HTTP API or the CL Agent. Supports plain text, JSON, gzip-compressed, and batch log ingestion.
• Log Search — Search with full SQL syntax or full-text search (FTS). Includes multi-source search, field extraction, saved queries, CSV export, and keyboard shortcuts.
• Alerting — Create alert rules using SQL or FTS queries. Receive notifications via Slack or Telegram with configurable throttling and deduplication.
• Website Monitoring — Monitor website uptime, response times, keyword presence, and TLS certificate expiration.
• Host Monitoring — Track server health with the CL Agent. Get alerted when hosts stop checking in.
• Cron Monitoring — Detect silent cron job failures. Get alerted when jobs fail or stop running.
• Metrics — Scrape Prometheus endpoints and visualize counter and gauge metrics with built-in charts.
• Dark Mode — Toggle between light and dark themes.