[rrd-users] Still trying to create a graph from multiple sources in RRDtool
Emily Chouinard
cousin17 at msu.edu
Mon Jun 16 20:08:06 CEST 2008
I tried that, (thanks again!!!!!!), and got this error Traceback (most
recent call last): File "mult_rrd.py", line 35, in ?
rrdtool.update(str('usr.rrd'), 12332) TypeError: argument 1 must be
string, so tried it with just the str() and that gives my the usr is
undefined...I'm really stuck and I know its right there in front of me
Matthew M. Boedicker wrote:
> It's the same issue with the rrd files needing quotes around them. Any time
> you have bare unquoted strings in a Python source file it's going to interpret
> it as part of the code and try to find a module or variable with that name
> and that's where the error is coming from. You will need quotes where it says
> example.png too.
>
> On Mon, Jun 16, 2008 at 01:25:53PM -0400, Emily Chouinard wrote:
>
>> 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),12332) #str() because Python needs to have a string
>> rrdtool.update(str(sys.rrd),12332)
>> rrdtool.update(str(idle.rrd),12332)
>>
>> 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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>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
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