cacti is not creating rrd [solved]

sepp · Post by **sepp** » Mon Jul 23, 2007 4:54 am

Hello,

I am a bit clueless what's going on. I have cacti 0.86.i running perfectly and smoth with some plugins and a huge bunch of graphs. fine so far, everthing works. But when I try to add new datasources (as we lately got some new links in our net) cacti is not creating the according rrds. File permissions are fine, cacti is full access to the dir on the local machine.

Hm... I am at the end with my ideas. What can I provide to solve this? Anybody any idea? Has this been happening before?

many thanks,

//seb

edit: I just saw that I have same problem like brodock: http://forums.cacti.net/viewtopic.php?t=22285

Post by **TheWitness** » Mon Jul 23, 2007 5:27 am

Look at Gandolf's NAN debugging article. Also, please check your poller cache for entries for this host.

TheWitness

sepp · Post by **sepp** » Mon Jul 23, 2007 5:29 am

ok thanks I will

sepp · Post by **sepp** » Mon Jul 23, 2007 6:19 am

hi again,

I checked everything from the NaN-check-site. But this is actually not reflecting my problem (although I obviously had some issues with some network-elements, but it was different data-sources).

In my case, cacti is not creating the rrd-file if I create a new data-source, allthough it has all the file-permissions etc.

or do I have a wrong understanding of rrd-creation? what I allready did is manually create a test-rrd in the according directoy ==> it works...

thanks

//seb

*edit: there is no entry in the poller cache

sepp · Post by **sepp** » Mon Jul 23, 2007 7:59 am

I just wonder if I was clear enough... THIS is my problem:

RRDTool Command:

/usr/bin/rrdtool graph - \
--imgformat=PNG \
--start=-86400 \
--end=-300 \
--title="sepp" \
--rigid \
--base=1000 \
--height=120 \
--width=500 \
--alt-autoscale-max \
--lower-limit=0 \
--vertical-label="bits per second" \
--slope-mode \
DEF:a="/usr/share/cacti/site/rra/xxxx_net_traffic_in_802.rrd":traffic_in:AVERAGE \
DEF:b="/usr/share/cacti/site/rra/xxxx_net_traffic_in_802.rrd":traffic_out:AVERAGE \
CDEF:cdefa=a,8,* \
CDEF:cdefe=b,8,* \
AREA:cdefa#00CF00:"Inbound" \
GPRINT:cdefa:LAST:" Current\:%8.2lf%s" \
GPRINT:cdefa:MAX:"Maximum\:%8.2lf%s" \
GPRINT:cdefa:AVERAGE:"Average\:%8.2lf%s\n" \
LINE1:cdefe#002A97:"Outbound" \
GPRINT:cdefe:LAST:"Current\:%8.2lf%s" \
GPRINT:cdefe:MAX:"Maximum\:%8.2lf%s" \
GPRINT:cdefe:AVERAGE:"Average\:%8.2lf%s"

RRDTool Says:

ERROR: opening '/usr/share/cacti/site/rra/xxxx_net_traffic_in_802.rrd': No such file or directory

Post by **gandalf** » Mon Jul 23, 2007 10:08 am

Cacti will not create rrd files if the target seems to be down. This is handled by "Downed Host Detection". Please report the status of the device from the DEVICE list
Reinhard

sepp · Post by **sepp** » Tue Jul 24, 2007 2:22 am

Hi gandalf,

maybe still I was not clear enough. The host/device is up and running and it is graphing it's links fine. I just want to add another link, but cacti refuses to create the rrd. Anyhow, the status is UP

many thanks,

//seb

sepp · Post by **sepp** » Tue Jul 24, 2007 4:03 am

hm... select case somebody is investing time right now to think about it: please stop!

I solved the "non-creation-of-rrd-files" symptom => it was a problem between chair and keyboard.... in detail: I have chosen the logical interface instead of the physical on this machine to create a graph - this will never work.. now I have NaNs, but for this I follow gandalfs doku.

many thanks anyhow and sorry for the waste of time...

//sepp

Post by **gandalf** » Tue Jul 24, 2007 1:09 pm

That makes me re-think about the use of filtering (to be defined in the XML description of the DQ)
Reinhard

cacti is not creating rrd [solved]

cacti is not creating rrd [solved]

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