[logback-user] Log Message regardless of Log Level

Daniel Ferber dffforum at gmail.com
Wed Dec 19 01:12:36 CET 2012

Hi Shane,

In a similar situation, I used another approach. First I considered using
markers on each initialization log message. Then I used a logger dedicated
exclusively for initialization. This dedicated logger was configured to log
everything, regardless of other loggers.

Both solutions, markers or dedicated logger, require you to handle the
initialization messages differently and to provide proper configuration for
them. IMHO, the approach of a dedicated logger is much simpler to
understand and to configure.

Best regards,
Daniel Felix Ferber

2012/12/14 Shane Kelly <logback at ballinascreen.com>

> 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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