Daniele Sluijters wrote: >This one might sound familiar to some. MRTG has the (nasty) >limitation that it needs to fetch pairs of data, it can't just fetch >1 or 3 values, they must always be grouped in logical pairs. > >This presented a problem when 1.3.6.1.4.1.2021.4.13.0 >(ucdavis.memory.memShared) had to be fetched because that value >isn't populated anymore. Instead however of returning 0 (which would >be inaccurate) or Unknown (accurate) "Snmp no such object" is >returned. This apparently confuses MRTG so much that even if the >other OID which makes up the pair .1.3.6.1.4.1.2021.4.11.0 does >respond with sane values an RRD is created with two datasource's >which just always return NaN.
That's an MRTG issue, not an RRD issue. I'd suggest you should take that up with the MRTG people. For my uses, I use a script to fetch the data, apply any manipulations required (for example, one of my sources returns an integer which is 10x the real value so I have to add a decimal place), and of course apply some sanity checks - one of which is "if the value isn't available, use "U for the update". -- Simon Hobson Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed author Gladys Hobson. Novels - poetry - short stories - ideal as Christmas stocking fillers. Some available as e-books. _______________________________________________ rrd-users mailing list rrd-users@lists.oetiker.ch https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users