system

check system $HOST
#	if loadavg (5min) > 8 for 4 cycles then alert
#	if memory usage > 80% for 4 cycles then alert
#	if cpu usage (user) > 80% for 4 cycles then alert
#	if cpu usage (system) > 50% for 4 cycles then alert
#	if cpu usage (wait) > 50% for 4 cycles then alert

check filesystem root with path /
        if space usage > 80% for 5 times within 15 cycles then alert
        if inode usage > 80% for 5 times within 15 cycles then alert