Nagios+Nagiosgraph+Cacti=No Graphs for me

[mcclung8]

Hello,
I apologize in advance if I waste anyone's time on something stupid.
My problem is that no graph shows up for me. My setup follows:
Debian Sarge with nagios polling via check_nt (the nc_net version), and nagiosgraph taking this perfdata and creating rrd files out of it.
rrdtool displays the rrd files just fine (while ran from www-data, which is what apache2 is running under). I am trying to graph my ping results (as a starter), but to no avail.
1. I have a data template with the 2 ds's (losspct and rta) from my rrd file as the sources.
2. I have a graph template with the 2 DSs as graph template items. (graph item types being 'COMMENTS')
3. I have a Data Source entered, with the proper path and filename to the rrd file: /usr/local/nagios/nagiosgraph/rrd/backupserver_PING_ping.rrd (debug shows no problems) here is the output:
Data Source Debug

/usr/local/rrdtool-1.2.12/bin/rrdtool create \
/usr/local/nagios/nagiosgraph/rrd/backupserver_PING_ping.rrd \
--step 300 \
DS:rta:GAUGE:600:0:100 \
DS:losspct:GAUGE:600:0:100 \
RRA:AVERAGE:0.5:1:600 \
RRA:AVERAGE:0.5:6:700 \
RRA:AVERAGE:0.5:24:775 \
RRA:AVERAGE:0.5:288:797 \
RRA:MAX:0.5:1:600 \
RRA:MAX:0.5:6:700 \
RRA:MAX:0.5:24:775 \
RRA:MAX:0.5:288:797 \

4. from device, I go to 'Create Graphs for this host', and select my graph template. Debug output:
RRDTool Command:

/usr/local/rrdtool-1.2.12/bin/rrdtool graph - \
--imgformat=PNG \
--start=-86400 \
--end=-300 \
--title="Backup Server - Nagios Ping Results" \
--base=1000 \
--height=120 \
--width=500 \
--alt-autoscale \
--vertical-label="ms" \
--slope-mode \
DEF:a="/usr/local/nagios/nagiosgraph/rrd/backupserver_PING_ping.rrd":losspct:AVERAGE \
DEF:b="/usr/local/nagios/nagiosgraph/rrd/backupserver_PING_ping.rrd":rta:AVERAGE \
COMMENT:"" \
COMMENT:""
5. I added the server to graph trees and when I go to graphs and select it, I get no graph. Just a title, and a magnifying glass. Click the hourglass, then the wrench and this is the output:
/usr/local/rrdtool-1.2.12/bin/rrdtool graph - \
--imgformat=PNG \
--start=1172529112 \
--end=1172615512 \
--title="Backup Server - Nagios Ping Results" \
--base=1000 \
--height=120 \
--width=500 \
--alt-autoscale \
COMMENT:"From 2007/02/26 16\:31\:52 To 2007/02/27 16\:31\:52\c" \
COMMENT:" \n" \
--vertical-label="ms" \
--slope-mode \
DEF:a="/usr/local/nagios/nagiosgraph/rrd/backupserver_PING_ping.rrd":losspct:AVERAGE \
DEF:b="/usr/local/nagios/nagiosgraph/rrd/backupserver_PING_ping.rrd":rta:AVERAGE \
COMMENT:"" \
COMMENT:""

I would appreciate any help very much. Please let me know if more info is needed.
Thank You.

[mcclung8]

here are the contents of said rrd file
filename = "/usr/local/nagios/nagiosgraph/rrd/backupserver_PING_ping.rrd"
rrd_version = "0003"
step = 300
last_update = 1172615605
ds[rta].type = "GAUGE"
ds[rta].minimal_heartbeat = 600
ds[rta].min = 0.0000000000e+00
ds[rta].max = 1.0000000000e+02
ds[rta].last_ds = "UNKN"
ds[rta].value = 0.0000000000e+00
ds[rta].unknown_sec = 0
ds[losspct].type = "GAUGE"
ds[losspct].minimal_heartbeat = 600
ds[losspct].min = 0.0000000000e+00
ds[losspct].max = 1.0000000000e+02
ds[losspct].last_ds = "UNKN"
ds[losspct].value = 6.9905000000e-01
ds[losspct].unknown_sec = 0
rra[0].cf = "AVERAGE"
rra[0].rows = 600
rra[0].pdp_per_row = 1
rra[0].xff = 5.0000000000e-01
rra[0].cdp_prep[0].value = NaN
rra[0].cdp_prep[0].unknown_datapoints = 0
rra[0].cdp_prep[1].value = NaN
rra[0].cdp_prep[1].unknown_datapoints = 0
rra[1].cf = "AVERAGE"
rra[1].rows = 700
rra[1].pdp_per_row = 6
rra[1].xff = 5.0000000000e-01
rra[1].cdp_prep[0].value = 0.0000000000e+00
rra[1].cdp_prep[0].unknown_datapoints = 0
rra[1].cdp_prep[1].value = 0.0000000000e+00
rra[1].cdp_prep[1].unknown_datapoints = 0
rra[2].cf = "AVERAGE"
rra[2].rows = 775
rra[2].pdp_per_row = 24
rra[2].xff = 5.0000000000e-01
rra[2].cdp_prep[0].value = 0.0000000000e+00
rra[2].cdp_prep[0].unknown_datapoints = 0
rra[2].cdp_prep[1].value = 8.5729000000e-03
rra[2].cdp_prep[1].unknown_datapoints = 0
rra[3].cf = "AVERAGE"
rra[3].rows = 797
rra[3].pdp_per_row = 288
rra[3].xff = 5.0000000000e-01
rra[3].cdp_prep[0].value = 0.0000000000e+00
rra[3].cdp_prep[0].unknown_datapoints = 264
rra[3].cdp_prep[1].value = 8.5729000000e-03
rra[3].cdp_prep[1].unknown_datapoints = 264
rra[4].cf = "MAX"
rra[4].rows = 600
rra[4].pdp_per_row = 1
rra[4].xff = 5.0000000000e-01
rra[4].cdp_prep[0].value = NaN
rra[4].cdp_prep[0].unknown_datapoints = 0
rra[4].cdp_prep[1].value = NaN
rra[4].cdp_prep[1].unknown_datapoints = 0
rra[5].cf = "MAX"
rra[5].rows = 700
rra[5].pdp_per_row = 6
rra[5].xff = 5.0000000000e-01
rra[5].cdp_prep[0].value = 0.0000000000e+00
rra[5].cdp_prep[0].unknown_datapoints = 0
rra[5].cdp_prep[1].value = 2.1871333333e-03
rra[5].cdp_prep[1].unknown_datapoints = 0
rra[6].cf = "MAX"

[mcclung8]

ahhh, I see I am getting '].last_ds = "UNKN"' in my rrd file... would this cause the graph to not display at all? Well, I will have to fix this tomorrow and see.

[gandalf]

Find some help on debugging at the second link of my signature
Reinhard