From OpenNMS

Work IN Progress

I use Dell servers and run OMSA on them, sending traps to OpenNMS via net-snmp. The traps are converted to events as defined in the various XML files in the $OPENNMS_HOME/etc/events directory.

I noticed that there were a few traps missing from the files distributed with OpenNMS and wanted to update the configuration. This page documents the process.

Rough Notes

All the Dell MIBs I have are under /opt/dell/srvadmin/etc:

# find /opt/dell/srvadmin/etc -name "*.mib"
/opt/dell/srvadmin/etc/srvadmin-isvc/mib/10892.mib
/opt/dell/srvadmin/etc/srvadmin-isvc/mib/dcs3fru.mib
/opt/dell/srvadmin/etc/srvadmin-storage/dcstorag.mib
/opt/dell/srvadmin/etc/srvadmin-idrac/dcs3rmt.mib

OpenNMS Dell event files in $OPENNMS_HOME/etc/events:

# ls Dell*
DellArrayManager.events.xml
Dell-DRAC2.events.xml
Dell.events.xml
DellOpenManage.events.xml
DellRacHost.events.xml
DellStorageManagement.events.xml

Dell.events.xml is actually built from a combination of MIBs. I have broken them out into separate files, named after the MIB used to create them:

MIB-Dell-10892.xml
ArrayManager-MIB.xml
DELL_ASF-MIB.xml
StorageManagement-MIB.xml
MIB-Dell-10900.xml
DELL-RAC-MIB.xml
INTEL-LAN-ADAPTERS-MIB.xml

Re-create MIB-Dell-10892 like this:

mib2opennms -w -6 /opt/dell/srvadmin/etc/srvadmin-isvc/mib/10892.mib > MIB-Dell-10892.xml.new

Fixup the ueis:

perl -pi -e 's{uei.opennms.org/mib2opennms}{uei.opennms.org/vendor/Dell/traps}g' MIB-Dell-10892.xml.001

Severities must be set manually. I have written a script that copies the severities for events already existing in the files distributed with OpenNMS:

cp_event_severity --reference MIB-Dell-10892.xml < MIB-Dell-10892.xml.001 > MIB-Dell-10892.xml.002

Check the new file for severities that are still Indeterminate and assign a suitable value.