Hi List!
I'm a long time lurker and infrequent poster who has been tasked with trying my
hand at a custom Intermapper probe. There are a few goals I have in mind (I'm
trying to monitor a video security system), but want to start with the obvious
one - is my mass storage device (a Drobo - no help there) mounted?
I discovered using Mibble that the mounted volumes show up in the
HOST-RESOURCES-MIB::hrStorageDescr and have written a probe that does what I
want regarding my test Drobo, but I've had to use the specific index to do it.
I'd like to be able to walk through hrStorageDescr and look if my Drobo is
mounted (I'm looking for "/Volumes/BigBrother", as they all are named
"BigBrother(something)"). My guess is this is easy and I'm just to
inexperienced to see it, but I haven't stumbled upon it in the Dev Guide,
Google or in the mail archives.
Currently my probe is pretty simple, with the following pertinent sections:
> <parameters>
>
> "DroboMounted" = "/Volumes/BigBrother"
>
> </parameters>
>
> <snmp-device-variables>
>
> -- variableName --OID --type
> --chartLegend(optional)
> isDroboMounted, HOST-RESOURCES-MIB::hrStorageDescr.36, DEFAULT,
> "hrStorageDescr.Drobo"
>
> </snmp-device-variables>
>
> <snmp-device-thresholds>
>
> -- status -- comparison --
> conditionString(optional)
> critical: $isDroboMounted !~ ${DroboMounted} "Drobo is NOT mounted!
> ($isDroboMounted) != ${DroboMounted}"
>
> </snmp-device-thresholds>
So I'd like a probe that walks through hrStorageDescr instead of using the
index 36 (I think that index can change, depending on the order and number of
things that mount at boot time) until it either finds an entry starting with
"/Volumes/BigBrother" or not and sets the status accordingly. How do I do that,
are there any examples I should be looking at?
I'm thinking of adding the ability to monitor whether or not certain programs
are running (Drobo Dashboard and SecuritySpy specifically), should I be
thinking of a command line probe instead or is it possible to integrate that
with the custom-snmp probe I started with? My initial assumption was I would
just have two entries for these machines, one probe for the hardware (Drobo)
and another for the software, but it would be neat if I could integrate them
into one.
Many thanks in advance for any and all ideas you can throw my way.
Dave Stewart
Aqua~Flo Supply (Goleta CA)
dstewart at aquaflo dot com
"10 percent of computer users are Mac users,
but remember, we are the top 10 percent."
- Douglas Adams
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