使用shell脚本监控网站运行状态

前言：好久没有写博客了，上来把之前写的博客几乎全都清理掉了，想写的时候写上一些，蛮不错。

shell监控网站/tomcat状态，依靠返回状态码来进行判断，返回200,302认为状态是正常的，否则认为tomcat/nginx/LB/Haproxy/apache挂掉了，脚本实现如下：

1. 创建一个站点文件夹，吧需要监控的地址都写到http_site文件里面

vim http_site

### Nginx site begin ###

http://192.168.129.86:38020

http://192.168.129.86:38021

### Nginx site end ###

### LB site begin ###

http://192.168.2.30:38020

http://192.168.2.30:38024/38025task

### LB site end ###

### Web site begin ###

http://192.168.129.91:8030

http://192.168.129.93:8030

### Web site end ###

### Task site begin ###

http://192.168.129.95:8032/38023task

http://192.168.129.95:8033/38027task

### Task site end ###

### Mobile site  begin ###

http://192.168.129.92:8030

http://192.168.129.92:8040

### Mobile site  end ###

2. 编写shell脚本实现监控功能，使用curl访问网站，过滤出返回的状态码当做判断条件，如有返回状态码非200/302则发送邮件报警

vim check_site.sh

#!/bin/bash

mysite=/root/script/check_http/http_site

check_status=/root/script/check_http/temp_status

historyfile=/root/script/check_http/history/`date  +%Y-%m-%d`/`date +%T`

failurefile=/root/script/check_http/history/`date  +%Y-%m-%d`/`date +%T`_failure

mkdir /root/script/check_http/history/`date  +%Y-%m-%d` &>/dev/null

for  site in `grep -v  -E "^#|^$"  $mysite`

do

       curl -s  -I  --connect-timeout 3 -m 5  $site  | grep  "HTTP/1.1"  | awk '{print $2}'  >  $check_status

       status=`cat $check_status`

       if [[ $status -eq 200 ]] || [[ $status -eq 302 ]]

       then

               echo  "###########################"             >>$historyfile

               echo  "http_site $site  Access Successful"      >>$historyfile

       else

               echo  "###########################"             >>$historyfile

               echo  "http_site $site  Access Failure"         >>$historyfile

       fi

done

grep "Access Failure" $historyfile  &>/dev/null

if      [ $? -eq 0 ]

then

       echo -e "\n\nThe following tomcat is not started !!!\n"  >> $failurefile

       echo -e "Please check the services !!!\n"  >> $failurefile

       echo -e "#############################################\n"  >> $failurefile

       grep "Access Failure" $historyfile  >> $failurefile

       echo -e "\n#############################################" >> $failurefile

       mail -s "SFA_Liby_Tomcat_Check !!!"  baiyongjie@winchannel.net   misterbyj@163.com tangzhiyu@winchannel.net   <  $failurefile

fi

3. 配置报警邮箱

vim /etc/mail.rc

set hold

set append

set ask

set crt

set dot

set keep

set emptybox

set indentprefix="> "

set quote

set sendcharsets=iso-8859-1,utf-8

set showname

set showto

set newmail=nopoll

set autocollapse

ignore received in-reply-to message-id references

ignore mime-version content-transfer-encoding

fwdretain subject date from to

set bsdcompat

set from=15600970600@163.com

set smtp=smtp.163.com

set smtp-auth-user=15600970600@163.com smtp-auth-password=Password smtp-auth=login

4.添加计划任务，每5分钟运行一次

crontab -e

*/5 * * * * /bin/bash  /root/script/check_http/check_site.sh

5. 测试脚本，写好以后已经运行好几天了，效果还不错，分享给大家

为了验证效果，当时停了几个tomcat，6月14号23:12分停掉的，停掉后运行脚本检测到有tomcat没有运行，会生成 _failure文件记录，并发出邮件，达到报警效果