In simple English
This tool collects error reports and activity notes from all your servers into one searchable place. When a website crashes, you can search the logs to see what happened. It requires a dedicated server with plenty of memory to run well. Setting it up takes time and some technical knowledge. It is free to use under a custom source-available licence.
What it is
Graylog is a centralized log management platform written in Java. It receives log messages from various sources, indexes them for fast search, and provides a web interface to examine them.
What it is good for
Solo builders who run multiple servers and need a single place to inspect errors, track traffic, and debug production issues without digging through individual command-line logs.
- Brings logs from multiple servers into one web dashboard.
- Provides fast search over large volumes of log data.
- Integrates with common logging formats and message queues.
- Requires a complex stack including MongoDB and a search engine to run.
- Needs several gigabytes of memory to handle indexing smoothly.
- Uses a restrictive source-available licence that requires care for commercial hosting.
manually grepping log files on individual servers
MongoDB
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git clone https://github.com/Graylog2/graylog2-server.git cd graylog2-server mvn package