The Logs tab is using the systemd journal plugin, to present a structured view into your infrastructure's systemd logs.
We have a thorough section explaining how you can work with logs, detailing how the plugin works, and what other utilities are used under the hood to provide you with the visualizations and the log entries.
The systemd journal plugin documentation has information about:
- Key features the plugin provides
- Journal sources
- Journal fields
- Full-text search
- Query performance
- Performance at scale
We recommend you to read through that document, to better understand how the plugin and the visualizations work.