How to increase jenkins logger size?

I use Jenkins log recorders as described in docs:
https://www.jenkins.io/doc/book/system-administration/viewing-logs/

It works, but log is only about 255 lines long, which is too short for my processing.

Newest lines are shown, I cant reach older logs, so I dont know what happened in the beginning.

How do I increase this size? I would like to keep at least 1MB of data.

I'm pretty sure this Jenkins system property will do the trick:

hudson.util.RingBufferLogHandler.defaultSize

tuning

Since: 1.563

Default: 256

Description: Number of log entries in loggers available on the UI at /log/

You can also custom Configure Loggers for Jenkins or create a logger in Jenkins for troubleshooting and diagnostic information that capture specifics you are looking for.

Additional references:

JENKINS - Logging

JENKINS - Logger Configuration

Or, if you are the admin, you should be able simply to scan the logs on the filesystem. Review what log rotation options and retention you may have.

StackExchange DevOps Q#12547, answer score: 3