监控cpu负载的脚本

#!/bin/sh
NUM=`uptime | awk -F ',' '{print $4}' | awk -F ' ' '{print $3}'`
echo $NUM >/tmp/num.log
num=`tail -n1 /tmp/num.log | awk -F '.' '{print $1}'`
n1=`ps -ef|grep httpd | grep -v grep| wc -l `
n2=`netstat -nat|grep -i "80" | grep -v grep | wc -l`
n3=`netstat -na | grep ESTABLISHED | wc -l`
log="/tmp/log"

if [ $num -gt 10 ] 
then
echo "start at `date +%D" "%T` , load_num=$NUM,http_80=$n1,ESTABLISHED=$n2" >> $log
mysql -p3333 -e 'show processlist;' >> $log
/qeedoodb/sendEmail-v1.55/sendEmail -f test@test.com -t test1@test.com  -s s.test.com -xu test@test.com -xp 123  -u CPU负载异常 -m load_num=$NUM,http_80=$n1,ESTABLISHED=$n2
fi

本文转自 holy2009 51CTO博客，原文链接:http://blog.51cto.com/holy2010/632214