#前提已經可以通過mail或mutt客戶端發郵件

1.先安裝sendmail來發郵件

??#?yum?-y?install?sendmail#?/etc/init.d/sendmail?start#?chkconfig?sendmail?on

2.再安裝郵件客戶端

???#?yum?-y?install?mutt

? 2.1 為了更好在郵件中顯示，設置mutt客戶端發送信息

??#?vim?/etc/Muttrcset?charset="utf-8"???????????#設置發郵件編碼set?envelope_from=yesset?rfc2047_parameters=yes????#解決附件亂碼問題set?realname="報警"???????????#發件人別名set?use_from=yes??????????????#指定是否顯示別名set?from=monitor@test.com?????#發送人地址

方法1、通過加失敗計數器來判斷（誤報率低）

#!/bin/bash DATE=`date?+%F"?"%H:%M` IP=/root/monitor/ip.txt?????#ip地址表 MAIL=zhenliang369@163.com for?ip?in?$(cat?$IP?|?sed?'/^#/d') dofor?((i=1;i<=3;i++))doping?-c?1?$ip?&>/dev/null[?$??-ne?0?]?&&?let?FailCount+=1;done done [?-z?$FailCount?]?&&?FailCount=0??#當ping都正常時，FailCount值為空，就設置FailCount值為0，用整數比較 if?[?$FailCount?-eq?2?];then#echo?"$IP?ping?is?failed."echo?-e?"Date?:?$DATE\nHost?:?$ip\nProblem?:?Ping?is?failed,?Please?check?!?!?!"?|?mutt?-s?"Ping?Monitor"?$MAIL fi

#添加任務計劃

# crontab -e

*/1 * * * * /root/monitor/ping.sh

done

方法二、通過ping一個包的狀態判斷（誤報率低，建議此方法）

#!/bin/bash MAIL="baojingtongzhi@163.com?huangxiaohong@loongtao.com" for?ip?in?$(cat?ip_list|sed?"/^#/d")????#ip_list是當前目錄下IP表doping?-c?1?$ip?&>/dev/null????????????#三個ping有一個能通，說明服務器正常a=$?sleep?2ping?-c?1?$ip?&>/dev/nullb=$?sleep?2ping?-c?1?$ip?&>/dev/nullc=$?sleep?2DATE=$(date?+%F"?"%H:%M)if?[?$a?-ne?0?-a?$b?-ne?0?-a?$c?-ne?0?];thenecho?-e?"Date?:?$DATE\nHost?:?$ip\nProblem?:?Ping?is?failed."?|?mail?-s?"Ping?$ip?failed?From?255.252"?$MAIL#else#????echo?"$ip?ping?is?successful."fi done

方法三、通過丟包率來判斷是否正常（誤報率高）

#!/bin/bash while?true doDATE=`date?+%F"?"%H:%M`MAIL="zhenliang369@163.com"for?ip?in?$(cat?ip_list|sed?"/^#/d")???????#ip_list是當前目錄下IP表?donum=$(ping?-c?2?$ip?|grep?"100%?packet?loss"?|wc?-l)????if?[?$num?==?1?];thenecho?-e?"Date?:?$DATE\nHost?:?$i\nProblem?:?Ping?is?failed."?|?mail?-s?"Ping?$i?failed?From?255.252"?$MAILfidone sleep?30 done

總結

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