How to disable Stack Trace in Confluence Log

Question

Hello folks

in order to take care of issues with our Confluence installation (on Prem, 6.14.2) I want to get rid of unnecessary information in the log files. (e.g. Application Data\Confluence\logs\atlassian-confluence.log)

Especially the Stack Traces in the default extend are - in my point of view - not relevant for a system admin. On error in the log file generates up to 320 lines of stack trace. This makes the log very hard to read and analyze.

I have tried changing the parameters in the log4j.properties, but this has no impact on the stack trace itself, only on the items that occure in the log themselves.

I have searched the Web for a solution, but apart from a similiar question from 2016 in the community I was not able to find an answer. https://community.atlassian.com/t5/Confluence-questions/Disable-Stacktrace-information/qaq-p/318306

Therefor: how can the stack trace be reduced from 320 lines to e.g. five lines?

Thanks and regards, Benjamin

Kurt Rosivatz · Answer

I found a possible solution and posted it in the developer community and now here:

I got it to work so far, but did not dare to use it in production ...

Im using Confluence Server 7.4 LTS, in my log4j.properties, there is the line:

`log4j.appender.confluencelog.layout=com.atlassian.confluence.util.PatternLayoutWithContext`

It seems that Atlassians PatternLayoutWithContext does not support the %throwable Parameter for the layout. But org.apache.log4j.EnhancedPatternLayout does. So I changed the line to:

`log4j.appender.confluencelog.layout=org.apache.log4j.EnhancedPatternLayout`

And layout to:

`log4j.appender.confluencelog.layout.ConversionPattern=%d %p [%t] [%c{4}] %M %m%n %throwable{1}`

And that works fine - no long stack traces any more in the log files.

Regards,
Kurt

Benjamin W. · Answer

Thanks for the suggestion - was not aware of this community.

Have placed it there. See here

Keep you posted.

Thomas Deiler_db00h3 · Answer

Dear @Benjamin W. ,

I am not fit enough any more for the details of Log4j. So please ask this specific question at https://community.developer.atlassian.com/ again.

So long

Thomas