11 comments

• 

  kotnik

  3 years ago

  Works excellent! Thanks! I've tried snmp with Cacti, but it almost killed my poor router. Now, it's graphing easily :)
  
  Just one sidenote. If you're installing clean mrtg, then add this to mrtg.conf:
  
  WorkDir: /var/www/htdocs/mrtg
  
  That direcotory will be a place where mrtg will dump pngg raphs, log and html files.
  
  Thanks Alexey!
  reply
• 

  Scoundrel

  3 years ago

  I am really glad that this small note can help you. And thanks for your comment.
  reply
• 

  Jon

  3 years ago

  Cool stuff! Even if the load of an SNMP daemon wasn't an issue (and it is for me); this saves you worrying about configuring communities properly, security issues, etc.
  reply
• 

  Bor

  3 years ago

  Необязательно как скрипт делать ;)
  вот поделюсь своими
  
  
  #####################################################################
  #
  # eth0 traffic graphing section from /proc/net/dev
  # change "grep eth0" to something else to measure a different device
  #
  Target[eth0]: `perl -e '@a=split(/[:\s]+/,qx(grep eth0 /proc/net/dev));printf "%.0f\n%.0f\n1\neth0 traffic\n",$a[2],$a[10];'`;
  Options[eth0]: dorelpercent, growright, nobanner, noinfo, transparent
  MaxBytes[eth0]: 2000000
  AbsMax[eth0]: 10000000
  kilo[eth0]: 1024
  YLegend[eth0]: Bytes per second
  ShortLegend[eth0]: B/s
  Legend1[eth0]: Incoming Traffic in Bytes per second
  Legend2[eth0]: Outgoing Traffic in Bytes per second
  LegendI[eth0]: In:
  LegendO[eth0]: Out:
  Title[eth0]: net eth0 traffic
  PageTop[eth0]: net eth0 traffic
  #####################################################################
  
  #####################################################################
  # # alternative eth0 traffic graphing section
  # using "sar" instead of /proc/*
  #
  Target[eth0sar]: `perl -e 'printf "%.0f\n%.0f\n1\neth0sar traffic\n",(qx(/usr/bin/sar -n DEV | grep eth0 | tail -n 2)=~/eth0\s+[^\s]+\s+[^\s]+\s+([^\s]+)\s+([^\s]+)/)'`;
  Options[eth0sar]: dorelpercent, gauge, growright, nobanner, noinfo, transparent
  MaxBytes[eth0sar]: 2000000
  AbsMax[eth0sar]: 10000000
  kilo[eth0sar]: 1024
  YLegend[eth0sar]: Bytes per second
  ShortLegend[eth0sar]: B/s
  Legend1[eth0sar]: Incoming Traffic in Bytes per second
  Legend2[eth0sar]: Outgoing Traffic in Bytes per second
  LegendI[eth0sar]: In:
  LegendO[eth0sar]: Out:
  Title[eth0sar]: net eth0sar traffic
  PageTop[eth0sar]: net eth0sar traffic
  #####################################################################
  reply
• 

  Scoundrel

  3 years ago

  2Bor: Thanks for example, but such complex config file is not so easily readable/modificable and that is why I've created my script ;-)
  reply
• 

  sb

  3 years ago

  Traffic monitoring without snmp has at least two caveats:
  
  1) The counters in /proc/net/dev (and in the output of ifconfig etc.) are 32bit and will overflow at around 4GiB. SNMP agents (should!) use 64bit counters.
  
  2) Related to (1), the SNMP client can tell if the counter has been reset because of a reboot, as it knows the server's uptime (SysUpTime).
  
  Have you tried tinysnmp? Its memory footprint is smaller than perl's ;-)
  reply
• 

  Jon

  2 years ago

  sb: is that true (the counter-size) even for 64 bit Linux?
  reply
• 

  Dusan

  1 year ago

  Hi,
  
  Do you have any idea how to get this script working on OpenBSD? There is no /proc/net/dev on OpenBSD.
  Anyway, nice script, thanks :)
  reply
• 

  Свадебный форум

  1 year ago

  As for me i don't like OpenBSD.
  So, Linux Forewer ))))
  reply
• 

  Andrea

  1 year ago

  Hi,
  i've installed get_if_stats.pl, and my configuration is:
  
  Target[webpec1eth0]: `/usr/local/bin/get_if_stats.pl eth0`
  Options[webpec1eth0]: gauge,noinfo, nopercent, growright, nobanner
  Title[webpec1eth0]: Traffico IN/OUT(eth0)
  MaxBytes[webpec1eth0]: 100000000
  PageTop[webpec1eth0]: Traffico interfaccia (eth0)
  #
  Target[webpec1eth1]: `/usr/local/bin/get_if_stats.pl eth1`
  Options[webpec1eth1]: gauge,noinfo, nopercent, growright, nobanner
  Title[webpec1eth1]: Traffico IN/OUT(eth1)
  MaxBytes[webpec1eth1]: 100000000
  PageTop[webpec1eth1]: Traffico interfaccia (eth1)
  
  Eth0 graph is correct, while the eth1 graph shows empty values ?
  If I run the script on command line I get:
  227419173
  261530900
  0
  0
  
  thanks
  
  andrea b
  reply
• 

  Hamlesh

  1 year ago

  Perfect, just what I needed - thanks :)
  reply