Increasing Java heap size for Jenkins on a Debian server.
Here’s the error we got:
SEVERE: Timer task hudson.node_monitors.AbstractNodeMonitorDescriptor$1@1d2c767 failed java.lang.OutOfMemoryError: Java heap space
To fix this, open Jenkins configuration file /etc/default/jenkins and change the JAVA_ARGS value appropriately:
JAVA_ARGS="-Xmx2048m"
Don’t forget to restart the service:
# /etc/init.d/jenkins restart
Check logs in case of problems:
# tail -f /var/log/jenkins/jenkins.log