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#!/bin/ksh

# function gen_data
# record performance data, place in a file with each node's
#    information all on one line
gen_data()
{
    for i in 54 72 114 122 123 139 73
    do 
        ssh 10.42.1.$i "hostname && uptime"  
    done | \
    awk ' BEGIN {cnt=0}
        { printf("%s, ", $0)
          cnt++
          if(cnt % 3 == 0) {printf("\n") }
        }' > ./perf_data
}

#function check_data
# check for load averages (fields 6,7,8) which are greater than 7

check_data()
{
	awk -F"," '{ if($6 > 7.0 || $7 > 7.0 || $8 > 7.0) 
	                 {print $0 } 
	           }' ./perf_data > ./email.dat
	           
# do we have any warnings to email ?	           

	if [ -s email.dat ]; then
	   cat ./email.dat | \
	       usr/bin/mailx -s 'Performance warning' you@someplace.com
	fi
}

# main control loop
# run the two functions every ten minutes  60 seconds * 10 = 600

sleepy_time=600

# loop forever .....
while true
do
	gen_data
	check_data
	cat ./perf_data >> ./perf_data.log
	sleep $sleepy_time
done 

#!/bin/ksh # function gen_data # record performance data, place in a file with each node's # information all on one line gen_data() { for i in 54 72 114 122 123 139 73 do ssh 10.42.1.$i "hostname && uptime" done | \ awk ' BEGIN {cnt=0} { printf("%s, ", $0) cnt++ if(cnt % 3 == 0) {printf("\n") } }' > ./perf_data } #function check_data # check for load averages (fields 6,7,8) which are greater than 7 check_data() { awk -F"," '{ if($6 > 7.0 || $7 > 7.0 || $8 > 7.0) {print $0 } }' ./perf_data > ./email.dat # do we have any warnings to email ? if [ -s email.dat ]; then cat ./email.dat | \ usr/bin/mailx -s 'Performance warning' you@someplace.com fi } # main control loop # run the two functions every ten minutes 60 seconds * 10 = 600 sleepy_time=600 # loop forever ..... while true do gen_data check_data cat ./perf_data >> ./perf_data.log sleep $sleepy_time done