Ubuntu 16.04 System Monitoring

Unable to graph the values of ucd-memory (MIB Group) on my Linux Ubuntu 16.04 using Data Collection Group File ‘netsnmp.xml’.

I am not sure if I missed anything on Opennms. However, ONMS is able to graph other MIB Groups (shown below).

Please help me.

Expected outcome:
Graph on ‘Resource Graph’ function the below values and make some custom alarms & notifications:
. memTotalSwap
. memAvailSwap
. memTotalReal
. memAvailReal
. memTotalFree memShared memBuffer memCached memSwapError

OpenNMS version:
Version: 23.0.0