Troubleshoot data collections problems




Collectd errors or problems can be obtained from collectd.log in /var/log/opennms/. Collectd should be set to DEBUG mode in log4j2.xml which can be found in ${OPENNMS_HOME}/etc/.
But if OpenNMS monitors many nodes, the debug collectd log file will grow ridiculous fast and it’s not easy to find the logs you are searching for.

A good approach to handle this is, to separate the logs from the problematic node into a new log file.
In the wiki you can find a how to article:

SNMP data collecting issues

Please check also the SNMP performance data troubleshoot guide.


Instead of adding a click layer for a wiki article in between, I would migrate the article here and remove the wiki article later.