I’m currently preparing to move from an old Nagiosto a new Icinga installation and therefore I wrote another check script.
There’s already a plugin available with lots of checks but it fails to monitor devices where HSRP load balancing is enabled so I decided to write my own script.
Here’s my sourcecode, you can copy it or just download the script check_snmp_hsrp.tar.gz
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#!/bin/bash # 30/JAN/2012 Evelyn Riha # Modified some lines to check if the given hsrp state is a valid one # 26/JAN/2012 Evelyn Riha # Checks the hsrp state of a given interface on a cisco switch # Also usable for HSRP configs with two groups on one interface (load sharing) ################################################################################# ## fill constants ## HSRP_OID='1.3.6.1.4.1.9.9.106.1.2.1.1.15' IDESCR_OID='1.3.6.1.2.1.2.2.1.2' SNMPGET=`which snmpget` SNMPWALK=`which snmpwalk` USAGE="Usage: ./check_snmp_hsrp -H -C -i -s state[,state]" ## set variables ## community="" hostname="" interface="" my_states="" valid_states=(initial learn listen speak standby active) ## main method ## while getopts ":C:H:i:s:" options; do case $options in C ) community="$OPTARG";; H ) hostname="$OPTARG";; i ) interface="$OPTARG";; s ) my_states="$OPTARG";; ? ) echo $USAGE exit 1;; esac done hsrp_state[0]=`echo $my_states | awk -F ',' '{print $1}'` hsrp_state[1]=`echo $my_states | awk -F ',' '{print $2}'` if [[ ${valid_states[*]} =~ ${hsrp_state} ]] then : else echo "UNKNOWN - Invalid state given" exit 3 fi if [ $# -ge '8' ] && [[ ${valid_states[*]} =~ ${hsrp_state} ]] # 8 arguments are the minimum to work with then hsrp_status=`$SNMPWALK -v 2c -c $community $hostname $HSRP_OID.$interface | awk '{ print $4 }'` interface=`$SNMPGET -v2c -c $community $hostname $IDESCR_OID.$interface | awk '{print $4}'` x=0 #counter for arrays for state in $hsrp_status do case $state in 1) #initial - I don't know any reason to test this condition state="initial" #rewrite state in order to be more userfriendly if [[ ${hsrp_state[$x]} == $state ]] then status[$x]="OK - HSRP status on $interface is in INITIAL state" exit_state[$x]=0 else status[$x]="CRITICAL - HSRP status on $interface is in INITIAL state" exit_state[$x]=2 fi ;; 2) #learn - Probably also not really a good test state="learn" #rewrite state in order to be more userfriendly if [[ ${hsrp_state[$x]} == $state ]] then status[$x]="OK - HSRP status on $interface is in LEARNING state" exit_state[$x]=0 else status[$x]="WARNING - HSRP status on $interface is in LEARNING state" exit_state[$x]=1 fi ;; 3) #listen - Very likely not a good test too state="listen" #rewrite state in order to be more userfriendly if [[ ${hsrp_state[$x]} == $state ]] then status[$x]="OK - HSRP status on $interface is in LISTEN state" exit_state[$x]=0 else status[$x]="WARNING - HSRP status on $interface is in LISTEN state" exit_state[$x]=1 fi ;; 4) #speak - Getting better but not quite right state="speak" #rewrite state in order to be more userfriendly if [[ ${hsrp_state[$x]} == $state ]] then status[$x]="OK - HSRP status on $interface is in SPEAK state" exit_state[$x]=0 else status[$x]="WARNING - HSRP status on $interface is in SPEAK state" exit_state[$x]=1 fi ;; 5) #standby - This looks now really good state="standby" #rewrite state in order to be more userfriendly if [[ ${hsrp_state[$x]} == $state ]] then status[$x]="OK - HSRP status on $interface is in STANDBY state" exit_state[$x]=0 else status[$x]="CRITICAL - HSRP status on $interface is in STANDBY state" exit_state[$x]=2 fi ;; 6) #active - Sounds also very valuable state="active" #rewrite state in order to be more userfriendly if [[ ${hsrp_state[$x]} == $state ]] then status[$x]="OK - HSRP status on $interface is in ACTIVE state" exit_state[$x]=0 else status[$x]="CRITICAL - HSRP status on $interface is in ACTIVE state" exit_state[$x]=2 fi ;; *) #everything else status[$x]="UNKNOWN OSPF state received" exit_state[$x]=3 ;; esac x=`expr $x + 1` done else echo $USAGE exit 1 fi if [[ ${exit_state[1]} != '' ]] then #modify exit state for dual hsrp configurations if [[ ${exit_state[0]} == '2' ]] || [[ ${exit_state[1]} == '2' ]] then #one check failed ==> WARNING exit_code=1 elif [[ ${exit_state[0]} == '1' ]] || [[ ${exit_state[1]} == '1' ]] then #one check was a warning ==> WARNING exit_code=1 elif [[ ${exit_state[0]} == '2' ]] && [[ ${exit_state[1]} == '2' ]] then #both checks failed exit_code=2 elif [[ ${exit_state[0]} == '1' ]] && [[ ${exit_state[1]} == '1' ]] then #both checks were a warning exit_code=1 else #both checks were OK exit_code=0 fi #print both HSRP states in one line echo ${status[0]} echo ${status[1]} exit $exit_code else echo ${status[0]} exit ${exit_state[0]} fi |
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