MRTGBits

MRTGBits:: A NAGIOS core plug converting MRTG Bytes to bits v2::1/30/2021 https://github.com/mjkatona/MRTGBits/releases What does this do? MRTG can display in bits but records everything in Bytes When importing MRTG data in other applications as Bits, it must first be converted This NAGIOS core plugin will convert, import, and set alarm threadsholds as Bits Flow MRTG writes log file to a dir which NAGIOS Core can read NAGIO Core calls MRTGBits.pl via the device.cfg file pointing to the MRTG Log file MRTGBits.pl does wonderful perl magic can tells NAGIOS Core NAGIOS Core displays wonderful perl magic causing python lovers to cry Why do you care about Bytes or Bits? Bytes represent storage AKA Datacenter speak Bits represent bandwidth AKA Network speak How to install? You must have perl installed You must have MRTG installed You must have NAGIOS CORE Place MRTGBits.pl into your ~/nagios/libexec directory and chmod 755 the /nagios/libexec is where all your other check_this and check_that reside How do you configure? In your NAGIOS objects/device/host/services/how_ever_you_do_it config: # Add the command define command{ command_name MRTGBits command_line $USER1$/MRTGBits.pl $ARG1$ $ARG2$ $ARG3$ } # Add the service define service{ use generic-service host_name <# Hostname > servicegroups <# If you use Servicegroups > service_description <# Whatever you call it > check_command MRTGBits!<# MRTG PWD and Logfile>!<# Warning Exceed Threshold>!<# Warning Exceed Threshold> } <# MRTG PWD and Logfile> = This is where MRTG writes the .log files. It is the working directory in your MRTG.CFG file <# Warning Exceed Threshold> = This is the warning level in BITS when NAGIOS changes to yellow. <# Warning Exceed Threshold> = This is the critical level in BITS when NAGIOS changes to red. If you do not want to alarm on the thresholds, do not set them at all! Example: If you want to warn when the link exceeds 100Mb and critical when the link exceed 500Mb: check_command MRTGBits!<# MRTG PWD and Logfile>!100000000!500000000 If you want to warn when the link exceeds 700Mb and critical when the link exceed 900Mb: check_command MRTGBits!<# MRTG PWD and Logfile>!700000000!900000000 If you do not want to ever alarm so not set the warning or the critical: check_command MRTGBits!<# MRTG PWD and Logfile> Here is my working example where my MRTG pushes logfiles to a network "/share" drive and Nagios picks them up define command{ command_name MRTGBits command_line $USER1$/MRTGBits.pl $ARG1$ $ARG2$ $ARG3$ } # define service{ use generic-service host_name CORE-1 servicegroups NETWORK service_description Primary Internet Interface check_command MRTGBits! } And of course restart nagios! Last - To manually run, same concept but just replace ! with spaces: ./MRTGBits.pl /share/temp/192.168.10.4_23.log 700000000 900000000 To do better list A better install guide auto build nagios config based on MRTG logs and MRTG CFG Working DIR threshold for age of MRTG poll Exceeds threashold by x amount

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