[rrd-users] Still trying to create a graph from multiple sources in RRDtool
Emily Chouinard
cousin17 at msu.edu
Mon Jun 16 19:25:53 CEST 2008
Alright so hang in with me guys I almost have this finished, but I can't
seem to get my rrd to update or graph, any suggestions? I'm not sure if
they should go in the while statement, or after the if, any help would
be appreciated, because right now when I compile I get an error File
"mult_rrd.py", line 39, in ? rrdtool.update(str(usr.rrd)) NameError:
name 'usr' is not defined
import rrdtool
import os
import time
interval = 10
interval = str(interval)
interval_mins = float(interval) / 60
heartbeat = str(int(interval) * 2)
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] # 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
time.sleep(10)
rrdtool.update(str(usr.rrd)) #str() because Python needs to have a string
rrdtool.update(str(sys.rrd))
rrdtool.update(str(idle.rrd)
rrdtool.graph(example.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()),
#Give the current date and time on the graph
'DEF:ds0=usr.rrd:ds0:AVERAGE ', #Defines all three aspects of
the /proc/stat file
'DEF:ds1=sys.rrd:ds1:AVERAGE:step=800',
'DEF:ds2=idle.rrd:ds2:AVERAGE:step=800',
'AREA:ds0#0000FF:"User CPU usuage"', #Different Labels for each
of the three ascp
'AREA:ds1#00FF00:"System CPU usuage" ',
'AREA:ds2#FF0000:"Idle CPU usuage" ')
Matthew M. Boedicker wrote:
> It think it doesn't like the leading space in the arguments.
>
> It also expects each argument to a complete "part" (a complete DS, RRA, etc.),
> like this:
>
> 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))
>
> Each part separated by spaces in the command line becomes an argument to the
> Python method.
>
> On Mon, Jun 16, 2008 at 10:53:00AM -0400, Emily Chouinard wrote:
>
>> Oh man do I feel silly, well that fixed that problem but now I get this
>> error
>> # python mult_rrd.py
>> 246304 98112 103618859
>> Traceback (most recent call last):
>> File "mult_rrd.py", line 27, in ?
>> ' RRA:AVERAGE:0.5:', str(int(14400 / interval_mins)),':800')
>> rrdtool.error: can't parse argument ' DS:usr_info:COUNTER:10:U:U'
>>
>> Matthew M. Boedicker wrote:
>>
>>> You will have to put the rrd filenames in quotes so Python will interpret
>>> them as strings and not Python syntax.
>>>
>>> On Mon, Jun 16, 2008 at 10:12:09AM -0400, Emily Chouinard wrote:
>>>
>>>
>>>> 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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>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
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