Welcome to the community! Can you explain what you mean by improve the display of your log messages? Can you give us an example of the output you want to see?
I can't give another sample. I'm afraid to reveal information about my company.
I can discribe what I'd like to get :
Instead of seeing the whole stacktrace cut by several lines in kibana, I would like to get an only message for the message.
This message will start with the error message (like in the image I gave : "com.liferay.portal.kernel.security.auth.AuthException").
Then you can see in kibana you could deploy the message caracteristics and display details about the message. There you could see the whole stacktrace.
I saw it in another project, but I can't find an example with log4j 1 . Do you have any clue ?
You need to solve this in Logstash, before sending the data to Elasticsearch, and for multiline logs like that one you need to use the multiline codec.
But without any sample of your data is pretty hard to help further with working examples.
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