NAN for 1 oid but can get the rest of the device

[lclark1192]

Hello,

Thanks to all the devs for their great work on cacti, its really useful for me.

I am having a problem with trying to get a specific oid graphed from a Proxim Tsunami QuickBride 8100. I would like to graph the SNR of the radio, and I have continuously come up with being able to graph everything else I need to graph on the device except for the noise level. I get a NAN. This should return a negative value. I can graph the signal level which also returns a negative value, and all of the interface stats but nothing from this one oid.

I can snmpwalk from my cacti host with the proper creds (using snmp v3, i have tried v2 as well) and it will return the value i would expect. I can manually insert a value into the rrd file and it will show up on my graphs in cacti. So it looks to me like

A. I can get the value from the device
B. My graphs and templates are working as well

Im not sure where to go from here. I am running the latest versions of cacti and rrd on debian etch. Any help or suggestions of things to try would be great.

Thanks!

[gandalf]

Please follow help provided by 2nd link of my sig.
I suppose, that the data is retrieved from the device and that everything looks fine.
Try to get the related "rrdtool update" statement and run that from cli. Tell your findings
R.

[lclark1192]

Hello,

I turned debugging on in the logs and I found this:

06/02/2010 08:12:06 AM - POLLER: Poller[0] CACTI2RRD: /usr/bin/rrdtool-1.4.3/bin/rrdtool update /usr/share/cacti/site/rra/radio_b_snrnoise_664.rrd --template SNRNoise 1275484326:U
06/02/2010 08:13:06 AM - POLLER: Poller[0] CACTI2RRD: /usr/bin/rrdtool-1.4.3/bin/rrdtool update /usr/share/cacti/site/rra/radio_b_srnsignal_665.rrd --template SRNSignal 1275484385:-34

My first thought was that the minimum wasn't set, but this is the setup for the noise rrd:

filename = "/usr/share/cacti/site/rra/radio_b_snrnoise_664.rrd"
rrd_version = "0003"
step = 300
last_update = 1275485825
header_size = 3812
ds[SNRNoise].index = 0
ds[SNRNoise].type = "GAUGE"
ds[SNRNoise].minimal_heartbeat = 600
ds[SNRNoise].min = -1.0200000000e+02
ds[SNRNoise].max = NaN
ds[SNRNoise].last_ds = "U"
ds[SNRNoise].value = NaN
ds[SNRNoise].unknown_sec = 125


If i try and update manually it all goes through properly and will show up on the graph:
/usr/share/cacti/site/log# /usr/bin/rrdtool-1.4.3/bin/rrdtool updatev /usr/share/cacti/site/rra/radio_b_snrnoise_664.rrd --template SNRNoise N:-75
return_value = 0

I am not sure where to look next any help would be appreciated
Thanks,

[gandalf]

06/02/2010 08:12:06 AM - POLLER: Poller[0] CACTI2RRD: /usr/bin/rrdtool-1.4.3/bin/rrdtool update /usr/share/cacti/site/rra/radio_b_snrnoise_664.rrd --template SNRNoise 1275484326:U

This one is bad. Does the script return proper data when called by cacti (please see the log, it is not ok to only run the script manually)
R.

[lclark1192]

Hi Reinhard,

Im not sure what you want me to do next. The line i saw:

06/02/2010 08:12:06 AM - POLLER: Poller[0] CACTI2RRD: /usr/bin/rrdtool-1.4.3/bin/rrdtool update /usr/share/cacti/site/rra/radio_b_snrnoise_664.rrd --template SNRNoise 1275484326:U

Is from the cacti log. Is there another way I can get it check?

Thanks for your help,
-lclark

[gandalf]

There must be a script or SNMP get/walk that fetches data for that rrd file. I assume that there'S an error while doing so. Please search the log before that rrd update entry to find the result.
R.