[logback-user] Log Message regardless of Log Level

Ralph Goers rgoers at apache.org
Sat Dec 15 01:21:19 CET 2012

Use a Marker.  Then set a Marker filter to always accept events with that Marker.


On Dec 14, 2012, at 2:42 PM, Shane Kelly wrote:

> Folks,
> Just wondering if there is a capability within Logback for writing a log message regardless of whatever log level has been set in configuration. Consider the scenario where I want my web application to output some diagnostic information at startup or shutdown - for example, the Web Application version, build date etc. If I were to set the log level of these messages to be TRACE, DEBUG, or INFO then its possible they may never be displayed since the app may typically be configured to run with a log level of WARN. Similarly, I don't want to set the log level of the messages to WARN, ERROR or FATAL in order to ensure that they do get displayed since they're not really error messages, and if we monitor the log files for WARN, ERROR or FATAL messages then this would trigger a false positive.
> So, is there some way to force a message to be logged at all times, independently of log level? Or some way to achieve this effect via existing configuration. Arguably I suppose this is bending the rules slightly, in that it could be abused - why offer the ability to filter certain log levels if an application can override/ignore them - but perhaps this is something which could be configurable/switchable?
> Regards,
> Shane
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