[rrd-users] Still trying to create a graph from multiple sources in RRDtool

[Emily Chouinard]

Alright so I've tried following everyone advice, thanks by the way, and 
I've got this far and now I can't get the rrdcreate to work when I run 
my code

import rrdtool
import os
import time

interval = 5
interval = str(interval)
interval_mins = float(interval) / 60 
heartbeat = str(int(interval) * 2)

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]              # These 3 index the specific CPU usages
    sys_info = info[3]
    idle_info = info[4]
    print  usr_info, sys_info, idle_info #Print out so you can see 
what's happening
   
    rrdtool.create (usr.rrd,
        ' DS:usr_info:COUNTER: %s:U:U % heartbeat', 
        ' RRA:AVERAGE:0.5:1:', str(int(4000 / interval_mins)),
            ' RRA:AVERAGE:0.5:', str(int(30 / interval_mins)), ':800',
               ' RRA:AVERAGE:0.5:', str(int(120 / interval_mins)), ':800',
            ' RRA:AVERAGE:0.5:', str(int(1440 / interval_mins)), ':800')
   
    rrdtool.create (sys.rrd,
        ' DS:sys_info:COUNTER: %s:U:U % heartbeat',
        ' RRA:AVERAGE:0.5:1:', str(int(4000 / interval_mins)),
            ' RRA:AVERAGE:0.5:', str(int(30 / interval_mins)), ':800',
            ' RRA:AVERAGE:0.5:', str(int(120 / interval_mins)), ':800',
            ' RRA:AVERAGE:0.5:', str(int(1440 / interval_mins)), ':800')   
   
    rrdtool.create (idle.rrd,
        ' DS:idle_info:COUNTER: %s:U:U % heartbeat', 
        ' RRA:AVERAGE:0.5:1:', str(int(4000 / interval_mins)),
            ' RRA:AVERAGE:0.5:', str(int(30 / interval_mins)), ':800',
            ' RRA:AVERAGE:0.5:', str(int(120 / interval_mins)), ':800',
            ' RRA:AVERAGE:0.5:', str(int(1440 / interval_mins)), ':800')
     
rrdtool.update (usr.rrd, 12322)
rrdtool.update (sys.rrd,12322)
rrdtool.update (idle.rrd,12322)

rrdtool.graph(test.rrd.png,
    ' --width','400',
    ' --height', '150',
    ' --start', 'now- %s' % (mins * 60),
    ' --end', 'now',
    ' --vertical-label', 'CPU Usuage',
    ' --title', 'EXAMPLE',
    ' COMMENT',time.strftime('%m/%d/%Y %H\:%M\:%S', time.localtime()),
    ' DEF:ds0= usr.rrd:ds0:AVERAGE ',
     ' DEF:ds1 = sys.rrd:ds1:AVERAGE:step=800',
     ' DEF:ds2= idle.rrd:ds2:AVERAGE:step=800',
        ' AREA:ds0#0000FF:"User CPU usuage"',
        ' LINE1: ds1#00FF00:"System CPU usuage" ',
        ' LINE1: ds2#FF0000:"Idle CPU usuage" ')

I get this error   # python mult_rrd.py
246176 97876 103312642
Traceback (most recent call last):
  File "mult_rrd.py", line 21, in ?
    rrdtool.create (usr.rrd,
NameError: name 'usr' is not defined

And this is where I am stuck, I'm not sure why it is giving me this 
error, I thought the rrdtool.create defined the file usr.rrd if not let 
me know what I should do to fix it, also let me know if you see other 
things gone wrong in here (maybe take a peek at my rrdtool.update 
commands), thanks!
    Emily

       


Fabien Wernli wrote:
> On Fri, Jun 13, 2008 at 11:40:28AM -0400, Matthew M. Boedicker wrote:
>   
>> For CPU usage you might want to try GAUGE instead of COUNTER. For graphing
>>     
>
> no you don't: Emily is pulling /proc/stat values which _are_ counters
> using GAUGE would produce endlessly growing values
>
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