Get an SNMP OID and save it to rrd directory dont work

Hi,

im want to get a custom OID with opennms, but it doesn work.

I want that opennms do this command and save the output (opennms is installed on this machine, its a ubuntu, the dbms machine is a SLES, suse linux enterprise server):

networking:/etc/opennms/datacollection# snmpget -On -v2c -c public dbms ".1.3.6.1.4.1.2021.8.1.101.1"

.1.3.6.1.4.1.2021.8.1.101.1 = STRING: "294"

What i can do, to poll this value?! Nothing is working for me. :-( I have read all the howtos and wiki pages available....

My actually configuration:

extend ../datacollection/netsnmp.xml:

<group name="exp_app" ifType="ignore">

<mibObj oid=".1.3.6.1.4.1.2021.8.1.101.1" instance="0" alias="expApp" type="string" />

</group>

And in all sysemDef's:

<includeGroup>exp_app</includeGroup>

But the collectd.log nothing says to this group and OID... Only this line appears:

"2014-02-26 17:56:59,175 DEBUG [Collectd-Thread-18-of-50] DefaultDataCollectionConfigDao: processGroupName: OIDs from group 'exp_app:all' are included for ifType: -2"

Nothing more... no "expApp" rrd file...No informations about this OID.... Some other snmp values like "SysContext.jrb" or "memTotalFree.meta", "tcpOutSegs.jrb", "CpuRawNice.jrb" are saved...

What im maybe doing wrong? I have tried to compile some MIBs over the WebUI (ucd-snmp-mib and net-snmp-extend from the sles machine), but its change nothing... :-(

Any help is very welcome

Regards

Silvio

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