[rrd-users] Real World Task

[Alex Kourafas]

What I'm tring to do is get and graph ip accounting infomation from my cisco router on a per user basis, if I issue:
[root at firewall src]# snmpwalk server public .1.3.6.1.4.1.9.2.4.9.1.4

I get
  enterprises.9.2.4.9     .1.4.        216.246.18.156. 12.18.122.173 = 1904
which is:
[libckaccounting table] [OID outbyts]     [src]            [dest]         [Bytes]


I want to chop off the "enterprises.9.2.4.9.1.4.216.246.18.156."

and use the dest and bytes fields to feed them into RRDTOOL

Any help would be appricated, especially if someone know a more appropriate place to ask this question.

Thanks
Alex








  ----- Original Message ----- 
  From: Todd Caine 
  To: Alex Kourafas 
  Sent: Friday, March 01, 2002 2:34 PM
  Subject: Re: [rrd-users] Re: RRD Tutorial - Question -Real World Example


    
  Alex, 
  There are a couple of things about the script which don't work on my system. 

  You should run the following command on your system to make sure it actually returns a number: 

  snmpwalk server public interfaces.ifTable.ifEntry.ifInOctets.1 | awk -- ' BEGIN { FS = " " }{ print $2 } ' 

  I had to modify the '$2' to '$4'. 

  Also the snmpwalk should be changed to snmpget since you are only trying are passing it the ifIndex.  It will still work either way but snmpget is really what you are doing.  The snmpwalk command will try to follow the oid branch until it reaches a leaf node which happens in this case immediately so no getnext request is ever needed. 

  BTW - I would change the 5 second polling period (sleep 5) to something like 5 minutes (sleep 300). 
    

  Alex Kourafas wrote: 

    Thank you VERY much Todd. Alex 
      ----- Original Message -----
      From: Todd Caine
      To: Alex Kourafas
      Cc: rrd-users at list.ee.ethz.ch
      Sent: Friday, March 01, 2002 2:16 PM
      Subject: Re: [rrd-users] Re: RRD Tutorial - Question -Real World Example
       The program runs in a loop forever collecting in/out octet counts every 5 seconds for the interface that was assigned an interface index of 1.  If you want to run a command in the background just start it up like normal but follow it with an ampersand, e.g.:  # ./collect.sh & 
      You might also want to use nohup like so: 

      # nohup /home/foo/collect.sh & 

      see 'man nohup' for more information. 
        
        

      Alex Kourafas wrote: 

        Can anyone tell me why the command below runs but returns nothing to the 
        screen and I dont have a 
        command prompt? 
        Is this correct? If so how do I run it in the backround? 
        Thanks 

        #!/bin/sh 
         while (true) 
         do 
           input=`snmpwalk server public interfaces.ifTable.ifEntry.ifInOctets.1 | awk -- ' BEGIN { FS = " " }{print $2 } '` 
           output=`snmpwalk server public interfaces.ifTable.ifEntry.ifOutOctets.1 | awk -- ' BEGIN { FS = " " } print $2 } '` 
           DATE=`date +%s` 

           /usr/local/rrdtool-1.0.33/bin/./rrdtool update myrouter.rrd $DATE:$input:output 
           echo $DATE - $input - $output 
           sleep 5 
         done


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