Tag Archives: 连接数

apache限制ip连接数

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首先，执行
#apt-get install libapache-mod-limitipconn
然后nano /etc/apache/httpd.conf
先找到这一行
#ExtendedStatus On
查看是否被注释了，如果是的话，去掉注释
再查找这个字符串mod_limitipconn.so
如果没找到任何记录,就在任何位置添加以下一行
LoadModule limitipconn_module modules/mod_limitipconn.so
然后就可以做限制了
对全局进行限制的话，就直接加入

 <IfModule mod_limitipconn.c>
  <Location />
   MaxConnPerIP 3            #每ip最多3个连接
   NoIPLimit image/*         #对图片不限制
  </Location>
 </IfModule>
如果你只想设置某个虚拟主机的连接限制，就把上面的那段放入
<VirtualHost>
</VirtualHost>
之中
如果只想限制某个目录的文件就可以这样
 
  <Location /mp3>
MaxConnPerIP 1  #限制1个连接
# In this case, all MIME types other than audio/mpeg and video*
# are exempt from the limit check
OnlyIPLimit audio/mpeg video  #只限制audio/mpeg video文件,如MP3呀WMA呀这种文件后缀名
    </Location>
 
 

限制apache2的连接数

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在debian下安装：
#apt-get install libapache-mod-limitipconn
 
不知道安装到什么地方了
 find / -name mod_limitipconn.so
/usr/lib/apache/1.3/mod_limitipconn.so
居然在1.3的目录下，复制到apache2的目录中
cp /usr/lib/apache/1.3/mod_limitipconn.so /usr/lib/apache2/modules/
 
修改apache2配置文件
nano /etc/apache2/httpd.conf
在最下面添加

ExtendedStatus On
LoadModule limitipconn_module modules/mod_limitipconn.so

重新启动/etc/init.d/apache2 restart
失败。。。
屏蔽LoadModule limitipconn_module modules/mod_limitipconn.so
正常
看来这个mod不直接支持apache2。。。。。。。
 
不过在官方的确写了安装方法，但是需要重新编译：（
 
Installation
The instructions below are written for Apache 2.0.39 since that’s what I had when I wrote the module, but they will also work with any later version of Apache 2.0.
Instructions for statically compiling mod_limitipconn into httpd:
 
tar xzvf httpd-2.0.39.tar.gz
tar xzvf mod_limitipconn-0.22.tar.gz
cd httpd-2.0.39
./configure –with-module=aaa:../mod_limitipconn-0.22/mod_limitipconn.c
make
make install
Instructions for building as a Dynamic Shared Object (DSO):
 
tar xzvf mod_limitipconn-0.22.tar.gz
cd mod_limitipconn-0.22
make install
Instructions for building static httpd with proxy tracking:
 
tar xzvf httpd-2.0.39.tar.gz
tar xzvf mod_limitipconn-0.22.tar.gz
cd httpd-2.0.39
patch -p1 < ../mod_limitipconn-0.22/apachesrc.diff
./buildconf
./configure –enable-forward –with-module=aaa:../mod_limitipconn-0.22/mod_limitipconn.c
make
make install
Instructions for building DSO with proxy tracking:
 
tar xzvf httpd-2.0.39.tar.gz
tar xzvf mod_limitipconn-0.22.tar.gz
cd httpd-2.0.39
patch -p1 < ../mod_limitipconn-0.22/apachesrc.diff
./buildconf
./configure –enable-forward
make
make install
cd ../mod_limitipconn-0.22
PATH=/usr/local/apache2/bin:$PATH make install

修改apache最大连接数

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# prefork MPM
# StartServers ……… number of server processes to start
# MinSpareServers …… minimum number of server processes which are kept spare
# MaxSpareServers …… maximum number of server processes which are kept spare
# MaxClients ……….. maximum number of server processes allowed to start
# MaxRequestsPerChild .. maximum number of requests a server process serves
<IfModule prefork.c>
StartServers         5
MinSpareServers      5
MaxSpareServers     10
MaxClients          20
MaxRequestsPerChild  0
</IfModule>
 
# pthread MPM
# StartServers ……… initial  number of server processes to start
# MaxClients ……….. maximum  number of server processes allowed to start
# MinSpareThreads …… minimum  number of worker threads which are kept spare
# MaxSpareThreads …… maximum  number of worker threads which are kept spare
# ThreadsPerChild …… constant number of worker threads in each server process
# MaxRequestsPerChild .. maximum  number of requests a server process serves
<IfModule worker.c>
StartServers         2
MaxClients         150
MinSpareThreads     25
MaxSpareThreads     75
ThreadsPerChild     25
MaxRequestsPerChild  0
</IfModule>
 
 
注意，如果不知道自己的apache2使用哪种工作模式，最简单的方法，先restart一下apache2，然后netstat -t 看看有几个apache2的进程，然后对比一下就可以了
ps:
apache2默认最大256连接，如果需要更大，自己手动编译