[mrtg] Page Top OID value
scott at infobunker.com
Thu Nov 19 17:15:19 CET 2009
I take it there is no such functionality in plain old MRTG rateup?
Quoting Steve Shipway <s.shipway at auckland.ac.nz>:
> If you are using Routers2 as the frontend to MRTG/RRD, then this
> functionality is being added to v2.21 via the embedded variables in
> PageTop/PageFoot text. It is not working in the current beta yet;
> development was delayed thanks to a car driver trying to drive
> through my bike while I was riding it but I'll be back working soon.
> The planned syntax will be to add something like: %OID(188.8.131.52)% to
> the PageTop text and Routers2 will do an on-the-fly SNMP lookup to
> retrieve that OID from the current device, provided the SNMP details
> can be identified (SNMPv1 and v2 support only at first). The
> drawback of this is that SNMP timeouts could lead to slow page
> generation when using this feature.
> Alternatively, you can already achieve this with routers2 2.21beta1
> if you are able to code up a script that does the SNMP lookup as
> v2.21beta allows the %EXEC(programname)% symbol to call an external
> program and include the output into the generated web page (for
> security reasons this is disabled by default unless you put an
> option in the routers2.conf)
> From: mrtg-bounces at lists.oetiker.ch [mrtg-bounces at lists.oetiker.ch]
> On Behalf Of Scott Ocken [scott at infobunker.com]
> Sent: Thursday, 19 November 2009 11:41 a.m.
> To: mrtg at lists.oetiker.ch
> Subject: [mrtg] Page Top OID value
> Is there a way to put an OID SNMP GET/WALK value in the PageTop?
> I have graphs for a Chiller Fluid Temp In/Out and want to put the
> Setpoint in Plain text in the PageTop. This might change, so I don't
> want to manually put it in the PageTop. I would be fine with writing
> a script to write the text, but I don't see a way to set PageTop = the
> output from a script.
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