zabbix_kmod

#!/bin/bash
#
# Zabbix agent extension for monitoring which kernel modules are loaded

BUFFER=/tmp/zabbix-kmod
SOFTWARE="sed"

# Add /usr/sbin to PATH to make this run on RHEL based systems
PATH="$PATH:/usr/sbin"

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

   lsmod | sed '1d; s/ .*//' > loaded_modules

   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

case "$action" in
    getdata)
        getdata
        ;;
    kmod.loaded-modules)
        test -f $BUFFER/loaded_modules && cat $BUFFER/loaded_modules
        ;;
esac