#!/bin/bash #20190611 url.txt文件直接填写需要监控的网址 第三版 #QQ450433231 time=`date +"%Y/%m/%d %H:%M.%S"` [ ! -f /root/url.txt ] && echo "url.txt文件不存在" && exit 1 while read url do nslookup $url >/dev/null 2>&1 if [ $? -ne 0 ] ;then echo "$time $url 网页无法解析" >> checkfail.log continue else for((i=1;i<4;i++)) do connect=`curl -i -s $url|grep "200 OK"|wc -l` if [ $connect -eq 1 ];then echo "$time 第$i次检查$url网页访问成功" >> check.log break elif [ $i = 3 ];then echo "$time $url 网页第$i次无法访问"|mail -s "网页不可达告警" [email protected] echo "$time 第$i次检查$url网页访问失败" >> checkfail.log else echo "$time 第$i次检查$url网页访问失败" >> checkfail.log fi done fi done < /root/url.txt ------------------------------------------------------- 1. 发送邮件 配置/etc/mail.rc就可以实现 百度教程一堆 2. 如何使用 /root目录下创建脚本 vi check.sh 授权可执行权限 chmod +x check.sh 每3分钟执行一次脚本 调用crontab crontab –e */3 * * * * sh /root/check.sh 监控网站可达性,当网站出现3次访问不可达的情况发出邮件告警。每3分钟扫描网页,扫描频率可修改; -------------------------------------- 以下是前面写的2个版本 后来想想还是优化下 #!/bin/bash #20190611 第二版本 check(){ connect=`curl -i -s $url|grep "200 OK"|wc -l` } time=`date +"%Y/%m/%d %H:%M.%S"` [ ! -f /root/url.txt ] && echo "url.txt文件不存在" && exit 1 while read url do nslookup $url >/dev/null 2>&1 if [ $? -ne 0 ] ;then echo "$time $url 网页无法解析" >> $0.faillog continue else echo "" >> $0.log fi check if [ $connect -eq 1 ];then echo "$time 第1次检查$url网页访问成功" >> $0.log else echo "$time 第1次检查$url网页访问失败" >> $0.faillog check if [ $connect -eq 1 ];then echo "$time 第2次检查$url网页访问成功" >> $0.log else echo "$time 第2次检查$url网页访问失败" >> $0.faillog check if [ $connect -eq 1 ];then echo "$time 第3次检查$url网页访问成功" >> $0.log else echo "$time $url 网页3次无法访问"|mail -s "网页不可达告警" [email protected] echo "$time $url 网页3次无法访问" >> $0.faillog fi fi fi done < /root/url.txt #!/bin/bash #第一版 while read url do connect1=`curl -i -s $url|grep "200 OK"|wc -l` if [ $connect1 -eq 1 ];then echo `date +"%Y/%m/%d %H:%M.%S"` check $url first success >>/root/connect.log else connect2=`curl -i -s $url|grep "200 OK"|wc -l` echo `date +"%Y/%m/%d %H:%M.%S"` check $url first fail >>/root/fail.log if [ $connect2 -eq 1 ];then echo `date +"%Y/%m/%d %H:%M.%S"` check $url second success >>/root/connect.log else connect3=`curl -i -s $url|grep "200 OK"|wc -l` echo `date +"%Y/%m/%d %H:%M.%S"` check $url second fail >>/root/fail.log if [ $connect3 -eq 1 ];then echo `date +"%Y/%m/%d %H:%M.%S"` check $url success >>/root/connect.log else echo `date +"%Y/%m/%d %H:%M.%S"` Check $url for three failed visits|mail -s "网页不可达告警" [email protected] echo `date +"%Y/%m/%d %H:%M.%S"` check $url Third fail >>/root/fail.log fi fi fi done < /root/url.txt
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