[rrd-users] Please Help
Emily Chouinard
cousin17 at msu.edu
Wed Jun 18 15:28:16 CEST 2008
I get this error
rrdtool fetch usr.rrd LAST
ERROR: the RRD does not contain an RRA matching the chosen CF
and my rrdtool info usr.rrd looks the same even though I let the program
run for quite awhile, so my update function not be in the if statement,
is there something wrong with its placement?
Emily Chouinard wrote:
> Well there is nothing in those files except crazy symbols so I think
> there is something wrong with my update function, I wasn't sure how to
> create it,
>
> rrdtool.update('idle.rrd','N:112431249')
> rrdtool.update('sys.rrd','N:108704')
> rrdtool.update('usr.rrd','N:259845')
>
> which not in python would look like rrdtool update usr.rrd N:112431249
> and I'm not sure exactly what was suppose to go in this command so I'm sure its wrong but I don't know how to fix it.
>
>
> Ruttenberg, Tanya wrote:
>
>> A couple of things look odd to me, but it could just be because you ran
>> your update only once. You need to do it a few times in order to see
>> data in your graph. RRDtool needs more than 1 datapoint to calculate a
>> rate.
>>
>> Try a few more rrdtool commands on the command line to see whether there
>> is something in your rrdfile. Rrdtool fetch is nice and simple. Try
>> something like:
>>
>> rrdtool fetch rrdfile.rrd LAST
>>
>> If you see a lot of numbers in there -- as opposed to a lot of NaN's
>> then perhaps it is your graph.
>>
>> -----Original Message-----
>> From: Emily Chouinard [mailto:cousin17 at msu.edu]
>> Sent: Wednesday, June 18, 2008 9:04 AM
>> To: Ruttenberg, Tanya
>> Cc: rrd-users at lists.oetiker.ch
>> Subject: Re: [rrd-users] Please Help
>>
>> Ruttenberg, Tanya wrote:
>>
>>
>>> What do you see when you do "rrdtool info filename"? You should see
>>> some indication that data has gone into it, under last_ds, min, max,
>>> or value. Like this:
>>>
>>> ds[ifhcinoctets].type = "COUNTER"
>>> ds[ifhcinoctets].minimal_heartbeat = 1800 =>ds[ifhcinoctets].min =
>>> 0.0000000000e+00 =>ds[ifhcinoctets].max = 1.2500000000e+08
>>> =>ds[ifhcinoctets].last_ds = "3213871804"
>>> =>ds[ifhcinoctets].value = 8.3618110390e+02
>>> ds[ifhcinoctets].unknown_sec = 0 ds[ifhcoutoctets].type = "COUNTER"
>>> ds[ifhcoutoctets].minimal_heartbeat = 1800 ds[ifhcoutoctets].min =
>>> 0.0000000000e+00 ds[ifhcoutoctets].max = 1.2500000000e+08
>>> ds[ifhcoutoctets].last_ds = "417872513"
>>> ds[ifhcoutoctets].value = 9.3979997545e+01
>>> ds[ifhcoutoctets].unknown_sec = 0
>>>
>>> I suggest you download and use drraw to take a look at what is in that
>>>
>>>
>>
>>
>>> file. This eliminates possible user error in your graph creation AND
>>> it will give you the exact rrdfile graph syntax you can use to create
>>> the graph.
>>>
>>> Good luck.
>>>
>>> Tanya Ruttenberg
>>> SMC/OND Administrator for DNE
>>> 410-965-9605
>>>
>>>
>>> -----Original Message-----
>>> From: rrd-users-bounces at lists.oetiker.ch
>>> [mailto:rrd-users-bounces at lists.oetiker.ch] On Behalf Of Emily
>>> Chouinard
>>> Sent: Wednesday, June 18, 2008 8:52 AM
>>> To: rrd-users at lists.oetiker.ch
>>> Subject: [rrd-users] Please Help
>>>
>>> I've spent a whole day looking at my code and trying to figure out why
>>>
>>>
>>
>>
>>> nothing is being graphed but I can't seem to figure out it, will
>>> someone please help me? My code is below and it seems to work, but I
>>> don't know if its the update or graph function thats not working, when
>>>
>>>
>>
>>
>>> I ls -l all my rrd files and my png seem updated but when I display my
>>>
>>>
>>
>>
>>> png it shows the legend and stuff but no values are actually graphed.
>>> So any help would be really appreciated.
>>> Thanks,
>>> Emily
>>> import rrdtool
>>> import os
>>> import time
>>>
>>>
>>> interval = 10
>>> interval = str(interval)
>>> interval_mins = float(interval) / 60
>>> heartbeat = str(int(interval) * 2)
>>> cur_date = time.strftime('%m/%d/%Y %H\:%M\:%S', time.localtime())
>>>
>>> rrdtool.create('usr.rrd',
>>> 'DS:usr_info:COUNTER:%s:U:U' % heartbeat,
>>> 'RRA:AVERAGE:0.5:1:%s' % int(4000 / interval_mins),
>>> 'RRA:AVERAGE:0.5:%d:800' % int(30 / interval_mins),
>>> 'RRA:AVERAGE:0.5:%d:800' % int(120 / interval_mins),
>>> 'RRA:AVERAGE:0.5:%d:800' % int(1440 / interval_mins))
>>>
>>> rrdtool.create('sys.rrd',
>>> 'DS:sys_info:COUNTER:%s:U:U' % heartbeat,
>>> 'RRA:AVERAGE:0.5:1:%s' % int(4000 / interval_mins),
>>> 'RRA:AVERAGE:0.5:%d:800' % int(30 / interval_mins),
>>> 'RRA:AVERAGE:0.5:%d:800' % int(120 / interval_mins),
>>> 'RRA:AVERAGE:0.5:%d:800' % int(1440 / interval_mins))
>>>
>>> rrdtool.create('idle.rrd',
>>> 'DS:idle_info:COUNTER:%s:U:U' % heartbeat,
>>> 'RRA:AVERAGE:0.5:1:%s' % int(4000 / interval_mins),
>>> 'RRA:AVERAGE:0.5:%d:800' % int(30 / interval_mins),
>>> 'RRA:AVERAGE:0.5:%d:800' % int(120 / interval_mins),
>>> 'RRA:AVERAGE:0.5:%d:800' % int(1440 / interval_mins))
>>>
>>> while True:
>>> infile= open('/proc/stat', 'r')
>>> #for x in range(0,1): #Reads first line only
>>> line = infile.readline()
>>> if line.startswith('cpu'): #Check to make sure in 1st line
>>> info = line.split() #Returns a list of the words in the string
>>> usr_info = info[1] #Index the three aspects of CPU Usuage
>>> sys_info = info[3]
>>> idle_info = info[4]
>>> #str() because Python needs to have a string
>>> print usr_info, sys_info, idle_info #Print out so you can see
>>>
>>>
>>
>>
>>> what's happening
>>> rrdtool.update('idle.rrd','N:112431249')
>>> rrdtool.update('sys.rrd','N:108704')
>>> rrdtool.update('usr.rrd','N:259845')
>>> rrdtool.graph('example.png',
>>> 'DEF:usr_info=usr.rrd:usr_info:AVERAGE', #Defines all
>>> three aspects of the /proc/stat file
>>> 'AREA:usr_info#0000FF:"User CPU usuage"',
>>> 'DEF:sys_info=sys.rrd:sys_info:AVERAGE:step=800',
>>> 'AREA:sys_info#00FF00:"System CPU usuage":STACK',
>>> 'DEF:idle_info=idle.rrd:idle_info:AVERAGE:step=800',
>>> #Different Labels for each of the three ascp
>>> 'AREA:idle_info#FF0000:"Idle CPU usuage":STACK',
>>> '--start','now-%s'%(30*60),
>>> '--end','now',
>>> '--width','500',
>>> '--height','250',
>>> '--base', '1000',
>>> '--vertical-label','CPU Usuage',
>>> '--title', 'EXAMPLE',
>>> 'COMMENT:' + cur_date + '')
>>> infile.close()
>>> time.sleep(10)
>>>
>>> _______________________________________________
>>> rrd-users mailing list
>>> rrd-users at lists.oetiker.ch
>>> https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
>>>
>>>
>>>
>>>
>>>
>> This is what I see, but I'm not sure what it all means, I am very new to
>> rrdtool
>>
>> filename = "usr.rrd"
>> rrd_version = "0003"
>> step = 300
>> last_update = 1213793679
>> ds[usr_info].type = "COUNTER"
>> ds[usr_info].minimal_heartbeat = 20
>> ds[usr_info].min = NaN
>> ds[usr_info].max = NaN
>> ds[usr_info].last_ds = "259845"
>> ds[usr_info].value = 0.0000000000e+00
>> ds[usr_info].unknown_sec = 0
>> rra[0].cf = "AVERAGE"
>> rra[0].rows = 24000
>> 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 = 800
>> rra[1].pdp_per_row = 180
>> rra[1].xff = 5.0000000000e-01
>> rra[1].cdp_prep[0].value = 0.0000000000e+00
>> rra[1].cdp_prep[0].unknown_datapoints = 117 rra[2].cf = "AVERAGE"
>> rra[2].rows = 800
>> rra[2].pdp_per_row = 720
>> rra[2].xff = 5.0000000000e-01
>> rra[2].cdp_prep[0].value = 0.0000000000e+00
>> rra[2].cdp_prep[0].unknown_datapoints = 297 rra[3].cf = "AVERAGE"
>> rra[3].rows = 800
>> rra[3].pdp_per_row = 8640
>> rra[3].xff = 5.0000000000e-01
>> rra[3].cdp_prep[0].value = 0.0000000000e+00
>> rra[3].cdp_prep[0].unknown_datapoints = 2457
>>
>>
>>
>>
>
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