Lenses follows 12-factor application design principles and emits all logs as an unbuffered stream of events at stdout. Logs are also available in the /logs folder in rotating files.

A user can also review the logs online via the /admin/logs page.

Review Lenses logs

  1. From the Header Bar Menu, go to Admin panel.
  2. On the side navigation, select Logs under Lenses section.
Lenses Logs

Log filtering

You can search and also quickly filter the logs by level, to quickly identify any issues.

Filter Lenses Logs by Level

Performance metrics

You can also peak into performance/metrics logs, by selecting the metrics view on the top right:

Performance / Metrics Logs

Secure logs

All logs generated are audited and reviewed, and no sensitive information is emitted.

Tuning the logs

To tune the logback configuration, log format and other options review the reference documentation.