#!/bin/sh

# Description:
# This Plugin determines the status of a MPT RAID controller
# It will call the binary mpt-status with sudo to get the
# needed root priviledges. Make sure you have configured your
# suders file:
# /etc/sudoers:
#   %nagcmd         MRELAYS = (root) NOPASSWD: /usr/bin/mpt-status -s

# This assumes that there is a group called nagcmd in which the
# user nagios is included.
#
# Output:
# The script returns a CRIT when the return value of mpt-status
# is not equal zero
#
# Written by: Stefan Jakobs <projects AT localside.net>
VERSION="20131202-0"

# You may have to change this, depending on where you installed your
# Nagios plugins
PATH="/usr/bin:/usr/sbin:/bin:/sbin"
LIBEXEC="/usr/lib/nagios/plugins"
. $LIBEXEC/utils.sh

MPT_STATUS='/usr/bin/mpt-status'

print_usage() {
   echo "Usage: $0"
   echo "Usage: $0 --help"
}

print_help() {
   echo ""
   print_usage
   echo ""
   echo "MPT RAID controller status"
   echo ""
   echo ""
   echo "This plugin is not developped by the Nagios Plugin group."
   echo "Please do not e-mail them for support on this plugin, since"
   echo "they won't know what you're talking about :P"
   echo ""
   echo "For contact info, read the plugin itself..."
}

if [ -n "$1" ]; then
   case "$1" in
      --help) print_help; exit $STATE_OK;;
      -h) print_help; exit $STATE_OK;;
      *) print_usage; exit $STATE_UNKNOWN;;
   esac
fi

if [ -x "$MPT_STATUS" ]; then
   OUTPUT=$(sudo $MPT_STATUS -s)
   STATUS=$?
   if   (( $STATUS == 0 )) ; then
      echo "OK"
      exitstatus=$STATE_OK
   elif (( $STATUS == 1 )) ; then
      echo "CRITICAL - Abnormal condition / unknown error"
   elif (( 2 <= $STATUS && $STATUS <= 3 )) ; then
      echo "CRITICAL - A logical volume has failed"
      exitstatus=$STATE_CRITICAL
   elif (( 4 <= $STATUS && $STATUS <= 7 )) ; then
      echo "WARNING - A logical volume is degraded"
      exitstatus=$STATE_WARNING
   elif (( 8 <= $STATUS && $STATUS <= 15 )) ; then
      echo "WARNING - A logical volume is resyncing"
      exitstatus=$STATE_WARNING
   elif (( 16 <= $STATUS && $STATUS <= 31 )) ; then
      echo "CRITICAL - At least one physical disk failed"
      exitstatus=$STATE_CRITICAL
   elif (( 32 <= $STATUS && $STATUS <= 63 )) ; then
      echo "WARNING - At least one physical disk is in warning condition: $OUTPUT"
      exitstatus=$STATE_WARNING
   else
      echo "CRITICAL - unknown return code: $OUTPUT"
      exitstatus=$STATE_CRITICAL
   fi
      echo "$OUTPUT"
else
   echo "CRITICAL - can not execute $MPT_STATUS"
   exitstatus=$STATE_CRITICAL
fi

exit $exitstatus