Cacti rrdtool graph with no values, NaN in .rrd file

Posted by beicha on Server Fault See other posts from Server Fault or by beicha
Published on 2011-11-24T07:15:27Z Indexed on 2011/11/24 10:00 UTC
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cacti

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rrdtool

Cacti 0.8.7h, with latest RRDTool. I successfully graphed CPU/Interface traffic, but got blank graphs like this one when it comes to Memory/Temperature monitoring.

The problem/bug is actually archived here, however this post didn't help.

I can snmpget the value, e.g SNMPv2-SMI::enterprises.9.9.13.1.3.1.3.1 = Gauge32: 26. However, the problem seems to exist in storing these values to the .rrd file.

Output of rrdtool info powerbseipv6testrouter_cisco_memfree_40.rrd AVERAGE cisco_memfree as below:

filename = "powerbseipv6testrouter_cisco_memfree_40.rrd" 
rrd_version = "0003"
step = 300
last_update = 1321867894
ds[cisco_memfree].type = "GAUGE"
ds[cisco_memfree].minimal_heartbeat = 600
ds[cisco_memfree].min = 0.0000000000e+00
ds[cisco_memfree].max = 1.0000000000e+12
ds[cisco_memfree].last_ds = "UNKN"
ds[cisco_memfree].value = 0.0000000000e+00
ds[cisco_memfree].unknown_sec = 94
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[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 = NaN
rra[1].cdp_prep[0].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 = NaN
rra[2].cdp_prep[0].unknown_datapoints = 18
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 = NaN
rra[3].cdp_prep[0].unknown_datapoints = 114
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[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 = NaN
rra[5].cdp_prep[0].unknown_datapoints = 0
rra[6].cf = "MAX"
rra[6].rows = 775
rra[6].pdp_per_row = 24
rra[6].xff = 5.0000000000e-01
rra[6].cdp_prep[0].value = NaN
rra[6].cdp_prep[0].unknown_datapoints = 18
rra[7].cf = "MAX"
rra[7].rows = 797
rra[7].pdp_per_row = 288
rra[7].xff = 5.0000000000e-01
rra[7].cdp_prep[0].value = NaN
rra[7].cdp_prep[0].unknown_datapoints = 114

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