How to stop Jenkins log from becoming huge?

Question

Recently my jenkins.log has started getting very large, very quickly, full of exceptions about DNS resolution. I attempted to use logrotate, but the log file grows too quick

Answer 1

Modify JAVA_ARGS in /etc/default/jenkins (location for Debian / Ubuntu installations at least) to disable DNS multicast feature.

Change this: JAVA_ARGS="-Djava.awt.headless=true"

To this: JAVA_ARGS="-Djava.awt.headless=true -Dhudson.DNSMultiCast.disabled=true"

And restart the service service jenkins restart