check_vm_uptime.sh

# SUDOERS: xm list --long [a-z0-9\-\.]+

CRITICAL_UPTIME_BOUNDARY=3600 # 1 hour
WARNING_UPTIME_BOUNDARY=86400 # 1 day

if [ -d /var/vm ]; then
  VM=`echo $1 |sed 's/\.vm\.xeriom\.net//'`
else
  VM=$1
fi

REPORT=`/usr/bin/sudo /usr/sbin/xm list --long $VM 2>/dev/null`
if [ "0" != "$?" ]; then
  echo "UPTIME UNKNOWN: Couldn't access data from Xen"
  exit 3
elif [ -z "$REPORT" ]; then
  echo "UPTIME UNKNOWN: Xen didn't return any data"
fi

START_TIME=`echo $REPORT | sed 's/.*start_time \([0-9]\+\).*/\1/g'`
NOW=`date +%s`
UPTIME=$((NOW - START_TIME))

if [ $UPTIME -lt $CRITICAL_UPTIME_BOUNDARY ]; then
  echo "UPTIME CRITICAL: UP for ${UPTIME}s"
  echo "Considered critical until ${CRITICAL_UPTIME_BOUNDARY}s"
  exit 2
elif [ $UPTIME -lt $WARNING_UPTIME_BOUNDARY ]; then
  echo "UPTIME WARNING: UP for ${UPTIME}s"
  echo "Considered warning until ${WARNING_UPTIME_BOUNDARY}s"
  exit 1
else
  echo "UPTIME OKAY: Up for ${UPTIME}s"
  exit 0
fi