SNMP-hrStorageTable

[digidax]

Hello Cacti spacialists,

I'm trying to monitor the disk space of the OpenVZ container. The shell inside the container gives me a

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# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/simfs             96G   43G   53G  45% /
none                  5.9G  4.0K  5.9G   1% /dev

But a verbose query of SNMP - hrStorageTable shows:

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+ Running data query [10].
+ Found type = '3' [SNMP Query].
+ Found data query XML file at '/var/www/cacti/resource/snmp_queries/hrStorageTable.xml'
+ XML file parsed ok.
+ <oid_num_indexes> missing in XML file, 'Index Count Changed' emulated by counting oid_index entries
+ Executing SNMP walk for list of indexes @ '.1.3.6.1.2.1.25.2.3.1.1' Index Count: 6
+ Index found at OID: '1.3.6.1.2.1.25.2.3.1.1.1' value: '1'
+ Index found at OID: '1.3.6.1.2.1.25.2.3.1.1.3' value: '3'
+ Index found at OID: '1.3.6.1.2.1.25.2.3.1.1.6' value: '6'
+ Index found at OID: '1.3.6.1.2.1.25.2.3.1.1.7' value: '7'
+ Index found at OID: '1.3.6.1.2.1.25.2.3.1.1.10' value: '10'
+ Index found at OID: '1.3.6.1.2.1.25.2.3.1.1.34' value: '34'
+ Located input field 'hrStorageIndex' [walk]
+ Executing SNMP walk for data @ '.1.3.6.1.2.1.25.2.3.1.1'
+ Found item [hrStorageIndex='1'] index: 1 [from value]
+ Found item [hrStorageIndex='3'] index: 3 [from value]
+ Found item [hrStorageIndex='6'] index: 6 [from value]
+ Found item [hrStorageIndex='7'] index: 7 [from value]
+ Found item [hrStorageIndex='10'] index: 10 [from value]
+ Found item [hrStorageIndex='34'] index: 34 [from value]
+ Located input field 'hrStorageDescr' [walk]
+ Executing SNMP walk for data @ '.1.3.6.1.2.1.25.2.3.1.3'
+ Found item [hrStorageDescr='Physical memory'] index: 1 [from value]
+ Found item [hrStorageDescr='Virtual memory'] index: 3 [from value]
+ Found item [hrStorageDescr='Memory buffers'] index: 6 [from value]
+ Found item [hrStorageDescr='Cached memory'] index: 7 [from value]
+ Found item [hrStorageDescr='Swap space'] index: 10 [from value]
+ Found item [hrStorageDescr='/dev'] index: 34 [from value]
+ Located input field 'hrStorageAllocationUnits' [walk]
+ Executing SNMP walk for data @ '.1.3.6.1.2.1.25.2.3.1.4'
+ Found item [hrStorageAllocationUnits='1024'] index: 1 [from regexp value parse]
+ Found item [hrStorageAllocationUnits='1024'] index: 3 [from regexp value parse]
+ Found item [hrStorageAllocationUnits='1024'] index: 6 [from regexp value parse]
+ Found item [hrStorageAllocationUnits='1024'] index: 7 [from regexp value parse]
+ Found item [hrStorageAllocationUnits='1024'] index: 10 [from regexp value parse]
+ Found item [hrStorageAllocationUnits='4096'] index: 34 [from regexp value parse]

also the snmpwalk from shell is corrospondending to Cacti:

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# snmpwalk -v1 -c public localhost .1.3.6.1.2.1.25.2.3.1.3
HOST-RESOURCES-MIB::hrStorageDescr.1 = STRING: Physical memory
HOST-RESOURCES-MIB::hrStorageDescr.3 = STRING: Virtual memory
HOST-RESOURCES-MIB::hrStorageDescr.6 = STRING: Memory buffers
HOST-RESOURCES-MIB::hrStorageDescr.7 = STRING: Cached memory
HOST-RESOURCES-MIB::hrStorageDescr.10 = STRING: Swap space
HOST-RESOURCES-MIB::hrStorageDescr.34 = STRING: /dev

So i think, it's not a Cacti Problem but maybe someone can tell me, how can I add the "/" root mount point to the shStorageIndex?

best regards
Frank

[digidax]

It's a bug of RHEL net-snmp.

thanks,
Frank