服务器监控报警小脚本（shell+sendEmail）

wget <a href="http://caspian.dotconf.net/menu/Software/SendEmail/sendEmail-v1.56.tar.gz">http://caspian.dotconf.net/menu/Software/SendEmail/sendEmail-v1.56.tar.gz</a>
tar zxvf sendEmail-v1.56.tar.gz
cp sendEmail-v1.56/sendEmail /shell/check/
cat >> check.sh <<EOF
#!/bin/bash
checkmail() {
    /usr/bin/perl ./sendEmail -f userid@mail.com -t oneuserid@mail.com –cc twouserid@mail.com threeuserid@mail.com -u "$subject" -m "$data" -s smtp.mail.com -xu userid -xp password
    sleep 300
}
while true;do
    loadavg=`awk '{print $2}' /proc/loadavg`
    diskuse=`df |awk '/cache/{print $5}'`
    servrun=`netstat -pln|awk -F/ '/:80/{print $NF}'`
    ip=`ifconfig|awk '/cast/{print $2}'|awk -F: '{if(NR==1){a=$2}else if(NR==2){b=$2}}END{print b"-"a}'`
    data=`echo -e "ip:$ip\nloadavg/5min:$loadavg\tcacheuse%:$diskuse\tservice:$servrun"`
    diskper=`echo $diskuse|sed 's/%//'`
    num=`ps aux|grep check.sh|grep -v grep|wc -l`
    if [[ $num > 2 ]];then
        break 2
    fi
    if [[ $loadavg > 1.00 ]] &amp;&amp; [[ $diskper > 90 ]];then
        subject="warning-$ip-loadavg-disk"
        checkmail
    else if [[ $loadavg > 1.00 ]];then
        subject="warning-$ip-loadavg"
        checkmail
    else if [[ $diskper > 90 ]];then
        subject="warning-$ip-disk"
        checkmail
    fi
    sleep 60
done
EOF