nginx 自动封 ip 过高连接

用命令查看web连接过高的IP地址，但是需要人工智能去封，太麻烦了，直接写个脚本自动解决。web服务器是用nginx，python为2.6
　　首先在nignx的config中建立空文件deny.ip, 然后在nginx.conf 的http标签中添加“include deny.ip;”。在nginx下sbin的目录中放入自动脚本。脚本可以查到连接最大的IP，并插入屏蔽列表中，验证正确性后导入配置。全部完成或者出错后发送邮件。被封ip再次访问会报403错误，如果不希望报错可以跳转到其它页面。源码如下：

check_deny_up.py

#!/bin/python
#-*- coding:utf-8 -*-
# Filename:    main.py
# Revision:    1.0
# Date:        2012-06-20
# Author:      simonzhang
# web:         www.simonzhang.net
# Email:       [email protected]
### END INIT INFO
import os
from string import strip
from email.mime.text import MIMEText
import smtplib

####
check_comm = "/bin/netstat -antp|grep :80|awk ' ''{print $5}'|awk -F: '{print $1}'|sort -r|uniq -c|sort -n -k1 -r"
max_ip = 100
mail_host = ‘’;
mail_user = ‘’;
mail_pwd = ‘’;
mail_to = ‘’;
mail_cc = ‘’;


def reboot_nginx_sendmail(ip_list):
#### reboot nginx
_get_check_confile = os.popen( './nginx -t' ).readlines()
if str (_get_check_confile.find( 'ok' )) ! = '-1' :
os.system( './nginx -s reload' )
_mail_content = ip_list
else :
_mail_content = 'Error'
#### send mail
msg = MIMEText(_mail_content)
msg[ 'From' ] = mail_user
msg[ 'Subject' ] = ' force ip.'
msg[ 'To' ] = mail_to
try :
s = smtplib.SMTP()
s.connect(mail_host)
s.login(mail_user, mail_pwd)
s.sendmail(mail_user, [mail_to, mail_cc], msg.as_string())
s.close()
except Exception, e:
print e


#### force out IP
def force_out(_deny_ip):
_write_status = 0
_read_force_file = open ( '../conf/deny.ip' , 'rb' ).read()
if str (_read_force_file.find(_deny_ip)) = = '-1' :
try :
_get_force_file = open ( '../conf/deny.ip' , 'ab' )
_get_force_file.write( 'deny %s ;\n' % _deny_ip)
_get_force_file.close()
_write_status = 1
return _write_status
except :
return _write_status
reboot_nginx_sendmail( "Error !" )
return _write_status


def main():
get_high_ip = os.popen( '%s' % check_comm).readlines()
_count_force_ip = 0
_force_ip_list = ''
for i in xrange ( 3 ):
try :
_get_count = strip(get_high_ip[i]).split( ' ' )[ 0 ]
_get_ip = strip(strip(get_high_ip[i]).split( ' ' )[ 1 ])
except :
_get_count = 0
_get_ip = ''
# Maximum connection IP is Beyond the limit value
if ( int (_get_count) > max_ip) and ( len (_get_ip) > 0 ):
force_ip = _get_ip
_get_status = force_out(force_ip)
# check maximum is added in the deny.ip file
if str (_get_status) = = '1' :
_count_force_ip + = 1
_force_ip_list + = ' %s ' % force_ip
#    if _count_force_ip > 0:
#        reboot_nginx_sendmail(_force_ip_list)


if __name__ = = '__main__' :
main()

启动i脚本
check_deny_up.sh

#! /bin/bash
#
# make [email protected]
#
#
### END INIT INFO

# Source function library.
. /etc/profile
cd /Data/apps/nginx/sbin/

# See how we were called.
case "$1" in
start)
/usr/local/bin/python check_ip_deny.py
;;
*)
echo $ "Usage: $0 {start}"
exit 1
esac

exit

将启动脚本放在crontab中运行。