shell监控脚本-监控CDN 首页

shell监控脚本-监控CDN 首页

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

cat chk_cdn.sh
#!/bin/bash
#
#script_name:chk_cdn.sh
#check cdn index.html
#Domain name resolution
#
#last update 20130320 by dongnan
#bbs# http://bbs.ywwd.net/
#blog# http://dngood.blog.51cto.com
#
#tail error.log
#curl: (6) name lookup timed out
#variables
#check_time=2        #检查间隔时间,2s
check_count=8        #故障后检查次数,8次
fault_count=4        #故障次数大于(4次),则认为不可用
www_url="http://www.test.com"
domain=www.test.com
sh_dir=/root/sh/
crondir=${sh_dir}crontab
error_log=${crondir}/log/cdn_error.log
flag_file=${crondir}/log/cdn.flag
echo=/bin/echo
curl=/usr/bin/curl
options='--connect-timeout 3 -IL -A "check_cdn_www"'
source ${sh_dir}/CONFIG
#main
test -e "${crondir}/log" || mkdir -p "${crondir}/log"
#true
if $curl $options $www_url > /dev/null 2>&1 ;then
#flag
    if [ -f $flag_file ];then
        #sms
        #for mobile in $MOBILES; do
            #$echo "cdn_www ok" | /usr/local/bin/gammu --sendsms TEXT "$mobile" -unicode
            #$echo "cdn_www_index.html ok"
        $done
        #email
        for mail in $MAILS;do
            $echo "$domain ok" | mail -s "cdn ok" $mail
        done
        #flag
        test -e "$flag_file" && rm -f "$flag_file"
    fi
#false
else
#flag真退出脚本
    test -e $flag_file && exit 0
check_failed=0
    #
    for((i=1;i<="$check_count";i++));do
check_date=$(date '+ %F %T')
        #curl 值取反
        if ! $curl $options $www_url > /dev/null 2>&1;then
            #变量加1
            ((check_failed++))
            #error.log
            $echo "$(/bin/date +'%F %T') $www_url $check_failed fault" >> "$error_log"
            /usr/bin/dig "$domain" >> "$error_log"
            #
            sleep 1
        fi
    done
    #
    if [ "$check_failed" -gt "$fault_count" ];then
         #sms
         #for mobile in $MOBILES;do
             #$echo "www_cdn_index.html error" | /usr/local/bin/gammu --sendsms TEXT "$mobile" -unicode
             #/bin/date +'%F %T' && $echo "www_cdn_index.html error"
         #done
         #email
         for mail in $MAILS;do
             $echo "$domain error" | mail -s "cdn error" $mail
         done
         #flag
         $echo "cdn_www_index.html error" > "$flag_file"
         #log
    fi
fi

#  
结束
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