shell监控脚本-监控网络

shell监控脚本-监控网络

注意:请先参考 shell监控脚本-准备工作,监控脚本在 rhel5/6 下测试正常，其它版本的linux 系统请自行测试
#监控网络

cat chk_ping.sh
#!/bin/bash
#
#script_name:chk_ping.sh
#check network
#
#last update 20130320 by dongnan
#bbs# http://bbs.ywwd.net/
#blog# http://dngood.blog.51cto.com
#lost
# ping -f -c 20  202.013.191.31
#PING 202.013.191.31 (202.11.191.31) 56(84) bytes of data.
#....................
#--- 202.013.191.31 ping statistics ---
#20 packets transmitted, 0 received, 100% packet loss, time 236ms
#delay
# ping -f -c 20 199.192.152.2
#PING 199.192.152.2 (199.192.152.2) 56(84) bytes of data.
#--- 199.192.152.2 ping statistics ---
#20 packets transmitted, 20 received, 0% packet loss, time 227ms
#rtt min/avg/max/mdev = 266.758/268.957/272.593/1.787 ms, pipe 20, ipg/ewma 11.959/269.829 ms
#
#variables
ping=/bin/ping
delay_limit=100
loss_limit=20
sh_dir=/root/sh/
crondir=${sh_dir}crontab
source ${sh_dir}CONFIG
user=`id -u`
hosts="$ALLHOSTS"
#main
#root权限
if [ "$user" -ne 0 ];then
    echo "must root !!"
    exit 1
fi
#主循环遍历机器
for HOST in $hosts ;do
flag_ping_file="$crondir/log/$HOST.ping"
error_log="$crondir/log/ping_error.log"
#true
if ! $ping -W 2 -f -c 10 $HOST > $crondir/log/ping.log 2>&1;then
    grep "packet loss" $crondir/log/ping.log >$crondir/log/ping.loss
    #返回值0,定义delay 与 loss 变量
loss=`awk '{print $6}' $crondir/log/ping.loss | awk -F% '{print $1}'`
    #loss 大于规定限制，则发送报警邮件
    if [ "$loss" -ge "$loss_limit" ];then
        if [ ! -f $flag_ping_file ];then
            #sms
            #for mobile in $MOBILES;do
                #echo "Monitor to $HOST delay $delay'ms;$loss% packet loss" | /usr/local/bin/gammu --sendsms TEXT "$mobile" -unicode
            #done
            #mail
            for mail in $MAILS;do
                echo "Monitor to $HOST $loss% packet loss" | mail -s "$HOST lost" $mail
            done
            #log
            date +'%F %T' >>$error_log
            cat $crondir/log/ping.log >>$error_log
            #生成flag文件
            echo "$HOST network error" >$flag_ping_file
        fi
    fi
#false
else
    #loss 小于规定限制，则发送解除报警邮件
    if [ -f $flag_ping_file ];then
        #sms
        #for mobile in $MOBILES;do
            #echo "$HOST network ok"|/usr/local/bin/gammu --sendsms TEXT "$mobile" -unicode
        #done
        #mail
        for mail in $MAILS;do
            echo "$HOST network ok" | mail -s "$HOST network ok" $MAILS
        done
        #delete flag
        rm -f $flag_ping_file
    fi
#
fi
#
done

结束
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