Accessing via the backend log

In the Global menu, go to Advanced → Show backend log

Location on the disk

Backend logs are stored on the file system. To find them, open the  Data directory, go to the log subdirectory and find the latest log file, e.g. trilium-2022-12-14.log. 

Reporting backend bugs

You can attach the whole file to the bug report (preferable) or open it and copy-paste only the last lines / lines you believe are relevant.

Customizing the retention of logs

The backend logs are fully managed by the Trilium server. By default the last 90 days worth of logs are kept; the logs older than that are deleted in order to reduce the space consumption.

It's possible to change the retention period by modifying the  Configuration (config.ini or environment variables) via the .inifile:

[Logging]
retentionDays=7

Or via the environment variable TRILIUM_LOGGING_RETENTION_DAYS.

Special cases:

• Positive values indicate the number of days worth of logs to keep
• A value of 0 results with the default value (90 days) to be used
• Negative values (e.g. -1) result with all logs to be kept, irrespective how ancient and numerous (and