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发表于 2007-1-28 16:13:03
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限制IP连接数
到这里下载模块 http://dominia.org/djao/limit/mod_limitipconn-0.04.tar.gz
安装:
tar zxvf mod_limitipconn-0.04.tar.gz
cd mod_limitipconn-0.04
make APXS=/usr/local/apache/bin/apxs ß-----这里要按你自己的路径设置
make install APXS=/usr/local/apache/bin/apxs ß-----这里要按你自己的路径设置
编辑httpd.conf
添加
全局变量:
< IfModule mod_limitipconn.c >
< Location / > # 所有虚拟主机的/目录
MaxConnPerIP 3 # 每IP只允许3个并发连接
NoIPLimit image/* # 对图片不做IP限制
< /Location >
< Location /mp3 > # 所有主机的/mp3目录
MaxConnPerIP 1 # 每IP只允许一个连接请求
OnlyIPLimit audio/mpeg video # 该限制只对视频和音频格式的文件
< /Location >
< /IfModule >
或者虚拟主机的:
< VirtualHost xx.xxx.xx.xx > ##ip 地址
ServerAdmin easy@phpv.net
DocumentRoot /home/easy
ServerName www.phpv.net
< IfModule mod_limitipconn.c >
< Location / >
MaxConnPerIP 5
NoIPLimit image/*
< /Location >
< Location /mp3 > # 所有主机的/mp3目录
MaxConnPerIP 2 # 每IP只允许一个连接请求
OnlyIPLimit audio/mpeg video # 该限制只对视频和音频格式的文件
< /Location >
< /IfModule >
< /VirtualHost >
----------------------------------------------------------------------------------------------
限制带宽：
下载模块 ftp://ftp.cohprog.com/pub/apache/module/1.3.0/mod_bandwidth.c
安装:
/usr/local/apache/bin/apxs -c ./mod_bandwidth.c -o /usr/local/apache/libexec/mod_bandwidth.so
<-------以上/usr/local/apache请设置为你的路径
编辑httpd.conf
添加：
LoadModule bandwidth_module libexec/mod_bandwidth.so
AddModule mod_bandwidth.c
重启你的apache
相关文档：
Global configuration directives :
BandWidthDataDir
Syntax : BandWidthDataDir <directory>
Default : "/tmp/apachebw"
Context : server config
Sets the name of the root directory used by mod_bandwidth to store its internal temporary information. Don't forget to create the needed directories : <directory>/master and <directory>/link
BandWidthModule
Syntax : BandWidthModule <On|Off>
Default : Off
Context : per server config
Enable or disable totaly the whole module. By default, the module is disable so it is safe to compile it in the server anyway.
PLEASE, NOTE THAT IF YOU SET A BANDWIDTH LIMIT INSIDE A VIRTUALHOST BLOCK, YOU ALSO __NEED__ TO PUT THE "BandWidthModule On" DIRECTIVE INSIDE THAT VIRTUALHOST BLOCK !
IF YOU SET BANDWIDTH LIMITS INSIDE DIRECTORY BLOCKS (OUTSIDE OF ANY VIRTUALHOST BLOCK), YOU ONLY NEED TO PUT THE "BandWidthModule On" DIRECTIVE ONCE, OUTSIDE OF ANY VIRTUALHOST OR DIRECTORY BLOCK.
BandWidthPulse
Syntax : BandWidthPulse <microseconds>
Default :
Context : per server config
Change the algorithm used to calculate bandwidth and transmit data. In normal mode (old mode), the module try to transmit data in packets of 1KB. That mean that if the bandwidth available is of 512B, the module will transmit 1KB, wait 2 seconds, transmit another 1KB and so one.
Seting a value with "BandWidthPulse", will change the algorithm so that the server will always wait the same amount of time between sending packets but the size of the packets will change. The value is in microseconds. For example, if you set "BandWidthPulse 1000000" (1 sec) and the bandwidth available is of 512B, the sever will transmit 512B, wait 1 second, transmit 512B and so on.
The advantage is a smother flow of data. The disadvantage is a bigger overhead of data transmited for packet header. Setting too small a value (bellow 1/5 of a sec) is not realy useful and will put more load on the system and generate more traffic for packet header.
Note also that the operating system may do some buffering on it's own and so defeat the purpose of setting small values.
This may be very useful on especialy crowded network connection : In normal mode, several seconds may happen between the sending of a full packet. This may lead to timeout or people may believe that the connection is hanging. Seting a value of 1000000 (1 sec) would guarantee that some data are sent every seconds...
Directory / VirtualServer configuration directives
BandWidth
Syntax : BandWidth <domain|ip|all> <rate>
Default : none
Context : per directory, .htaccess
Limit the bandwidth for files in this directory and sub-directories based on the remote host <domain> or <ip> address or for <all> remote hosts.
Ip addresses may now be specified in the network/mask format. (Ie: 192.168.0.0/21 )
The <rate> is in Bytes/second. A <rate> of "0" means no bandwidth limit.
Several BandWidth limits can be set for the same directory to set different limits for different hosts. In this case, the order of the "BandWidth" keywords is important as the module will take the first entry which matches the client address.
Example :
<Directory /home/www>
BandWidth ecp.fr 0
BandWidth 138.195 0
BandWidth all 1024
</Directory>
This will limit the bandwith for directory /home/www and all it's subdirectories to 1024Bytes/sec, except for .ecp.fr or 138.195..where no limit is set.
LargeFileLimit
Syntax : LargeFileLimit <filesize> <rate>
Default : none
Context : per directory, .htaccess
Set a maximal <rate> (in bytes/sec) to use when transfering a file of <filesize> KBytes or more.
Several "LargeFileLimit" can be set for various files sizes to create range. The rate used for a given file size will be the one of the matching range.
A <rate> of "0" mean that there isn't any limit based on the size.
A <rate> of "-1" mean that there isn't any limit for that type of file. It's override even a BandWidth limit. I found this usefull to give priority to very small files (html pages, very small pictures) while seting limits for larger files... (users with their video files can go to hell ! 
Example :
If the following limits are set :
LargeFileLimit 200 3072
LargeFileLimit 1024 2048
That's mean that a file of less than 200KBytes won't be limited based on his size. A file with a size between 200KBytes (included) and 1023Kbytes (included) will be limited to 3072Bytes/sec and a file of 1024Kbytes or more will be limited to 2048Bytes/sec.
MaxConnection
Syntax : MaxConnection <connections>
Default : 0 (illimited)
Context : per directory, .htaccess
Restrict the number of maximum simultanous connections. If the limit is reached, new connections will be rejected. A value of 0 mean that there isn't any limits.
MinBandWidth
Syntax : MinBandWidth <domain|ip|all> <rate>
Default : all 256
Context : per directory, .htaccess
Set a minimal bandwidth to use for transfering data. This over-ride both BandWidth and LargeFileLimit rules as well as the calculated rate based on the number of connections.
The first argument is used in the same way as the first argument of BandWidth.
<rate> is in bytes per second.
A rate of "0" explicitly means to use the default minimal value (256 Bytes/sec).
A rate of "-1" means that the minimal rate is equal to the actual rate defined by BandWidth and LargeFileLimit. In fact, that means that the final rate won't depend of the number of connections but only on what was defined.
Example :
If BandWidth is set to "3072" (3KBytes/sec) and MinBandWidth is set to "1024" (1KBytes/sec) that means :
- if there is one connection, the file will be transfered at 3072 Bytes/sec.
- if there is two connections, each files will be transfered at 1536 Bytes/sec.
- if there is three or more connections, each files will be transfered at 1024 Bytes/sec. (Minimal of 1024 Bytes/sec).
If MinBandWidth is set to "-1" that means :
- if there is one connection, the file will be transfered at 3072 Bytes/sec.
- if there is two or more connections, each files will be transfered at 3072 Bytes/sec. In effect, the rate doesn't depend anymore on the number of connections but only on the configuration values.
Note that the total transfer rate will never exceed your physical bandwidth limitation.
Note : If both a "BandWidth" and a "LargeFileLimit" limit apply, the lowest one will be used. (But never lower than the "MinBandWidth" rate)
If both a virtual server limit is defined and another apply for a directory under this virtual server, the directory limit will over-ride it.
If a limit is defined outside a Directory or VirtualHost directive, it will act as default on a per virtual server basis. (Ie: each virtual server will have that limit, _independantly_ of the other servers)
FAQ:
<!--StartFragment -->
1. I installed the module but the bandwidth isn't limited
2. It worked fine the first time but now the server is very slow
3. My PHP pages are displayed in plain text
4. My CGI are not working anymore
5. I can't submit any data using a HTML form anymore
1. I installed the module but the bandwidth isn't limited
You should make sure that the "master" and "link" directories exist and are read,write,execute for the user under which the server run.
By default, mod_bandwidth use :
/tmp/apachebw/master
/tmp/apachebw/link
If you set a limit inside a "Directory" block, you should make sure that the path is really the one used to serve documents.
2. It worked fine the first time but now the server is very slow
Make sure that there isn't and "dead" links in the mod_bandwidth "link" directory when you start the server. It's better to run the "cleanlink.pl" utility we provide.
3. My PHP pages are displayed in plain text
If your PHP pages are displayed correctly when the module isn't activated but are sent in plain text when you try to use mod_bandwidth, that's probably because mod_bandwidth is called before the PHP module.
Please, read the documentation to see how to give the lowest priority to mod_bandwidth so that it will be executed last.
4. My CGI are not working anymore
See the previous question...
5. I can't submit any data using a HTML form anymore
See the previous question...
参考很多地方的文档~.自己只是修改了小部分 |
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