zabbix_bondmon

#!/bin/bash
#
# Zabbix agent extension for monitoring bonding interfaces

BUFFER=/tmp/zabbix-bondmon
SOFTWARE="jo sed"

function discover_bonds() {
   [ -d "/proc/net/bonding/" ] && proc_discover_bonds
}

function proc_discover_bonds() {
   jo -p data=$( jo -a $(
   for bond in $(ls /proc/net/bonding)
   do
      if test -f $BUFFER/$bond; then
         while read line
            do
               jo {\#BOND}=${bond} {\#SLAVE}=${line%%:*}
            done < $BUFFER/$bond
      fi
   done ) )
}

function getdata() {
   [ -d "/proc/net/bonding/" ] && proc_getdata
}

function proc_getdata() {
   mkdir $BUFFER.$$; chmod 750 $BUFFER.$$
   cd $BUFFER.$$

   for bond in $(ls /proc/net/bonding)
   do
      grep -A1 'Slave Interface'  /proc/net/bonding/$bond | cut -d: -f2 | sed -Ee '/(--|^$)/d' | paste - - -d: | tr -d '[:blank:]' > $bond
   done

   test -d $BUFFER && mv $BUFFER $BUFFER.old
   mv $BUFFER.$$ $BUFFER
   rm -rf $BUFFER.old
}

function sanity_check() {
   ok=1
   for prog in $SOFTWARE
   do
      which $prog > /dev/null || { echo "Missing program $prog."; ok=0; }
   done
   test -f $CONFIG || { echo "Missing configfile $CONFIG"; ok=0; }
   test $ok -ne 1 && { echo "Sanity check failed. Aboring." ; exit 1; }
}

sanity_check

action=$1
bond=$2
slave=$3

case "$action" in
    getdata)
        getdata
        ;;
    bondmon.discover)
        discover_bonds
        ;;
    bondmon.state)
        test -f $BUFFER/$bond && grep $slave $BUFFER/$bond | cut -d: -f2
        ;;
esac