check_bond.sh

# !/bin/bash
# Name: check_bond
# Description : Icinga script to check the current status of network bonds
# Version : 1.0
# Author : William Fleming
# License : BSD

STATE_OK=0
STATE_WARNING=1
STATE_CRITICAL=2
STATE_UNKNOWN=3

BONDDIR=/sys/class/net
BONDS=$BONDDIR/bonding_masters

# check for bond0 directory
if [ ! -f $BONDS ]
then
    echo "cant find bonds!"
    exit $STATE_UNKNOWN
fi

# loop through bonds on server checking for down slaves
for i in `cat $BONDS`;
do
    for x in `cat /sys/class/net/$i/bonding/slaves`;
    do
        z=`cat $BONDDIR/$i/lower_$x/operstate`
        if [ $z == 'down' ]
        then
            echo "interface has failed in $i"
            exit $STATE_CRITICAL
        fi
    done
done

# if no slaves are down print summary
for i in `cat $BONDS`;
do
    echo $i "active slave is" `cat $BONDDIR/$i/bonding/active_slave` "in" `cat $BONDDIR/$i/bonding/mode` "mode"
done
exit $STATE_OK