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Today, I would like to share with you the relevant knowledge points about how apache limits concurrent connections and download speed under Linux. The content is detailed and the logic is clear. I believe most people still know too much about this knowledge, so share this article for your reference. I hope you can get something after reading this article.

Mod_limitipconn, an unofficial module of apache, controls concurrent connections according to the same source ip, bw_mod, which can limit bandwidth according to the source ip. They are all third-party modules of apache.

1. Download:

Wget

Wget

two。 Installation

# tar-zxvf mod_limitipconn-0.22.tar.gz

# cd mod_limitipconn-0.22

# vi makefile

Modify: apxs = "/ usr/local/apache2/bin/apxs" # here is the apxs path of your own apache to load the module

Or

# / usr/local/apache2/bin/apxs-I-c-a mod_limitipconn.c to load the module

# make

# make install

# tar-xvf mod_bw-0.7.tgz

# cd mod_bw

# / usr/local/apache2/bin/apxs-I-c-a / home/kenami/mod_bw/mod_bw.c

Next, open the configuration file httpd.conf of apache with vi

The following two lines were found:

Loadmodule limitipconn_module modules/mod_limitipconn.so

Loadmodule bw_module modules/mod_bw.so

3. Configuration

# paths to be controlled

Number of threads limited by maxconnperip 3 #

Noiplimit index.htm # does not restrict this file

Add under the virtual host configuration file:

Bandwidthmodule on

Forcebandwidthmodule on

Bandwidth all 10000 # Speed limit 10k

Minbandwidth all-1

The configuration parameters are described as follows:

A. Bandwidthmodule on | off

/ / whether to enable the bandwidth limit feature of mod_bw.

B. Bandwidth [from] [bytes/s]

Set to specify the maximum client bandwidth. 0 means there is no limit.

Bandwidth u: [user-agent] [bytes/s]

C. Minbandwidth [from] [bytes/s]

Sets the minimum value of the specified client bandwidth. A value of 0 means the maximum bandwidth of each client is 256bytes/s, and a value of-1 indicates a maximum of bandwith.

D. Largefilelimit [type] [minimum size] [bytes/s]

Sets the maximum bandwidth for accessing a file that exceeds a specific size, and the file type size is in kbytes

E. Maxconnection [from] [max]

Sets the maximum number of concurrent connections for a specified client

F. Forcebandwidthmodule [on | off]

The default bw module will apply all requests, and on can set the filter type

With regard to from, the client source can be divided into the following situations:

Ip specifies a single host

192.168.1.22

Specify network segment

192.168.1.0 Compact 24 or

192.168.1.0/255.255.255.0

Domain name single host

Client1.jb51.net

Domain name specified range

.jb51.net

All clients

All

The above configuration can be configured either for all clients or for a virtual host

Example 1:

Bandwidthmodule on

Bandwidth all 307200

Bandwidth 192.168.1.2 102400

Bandwidth "u: ^ Mozilla / 5 (. *)" 102400

Bandwidth "u:wget" 204800

Forcebandwidthmodule on

Largefilelimit .avi 600 204800

Maxconnection all 100

Maxconnnection 192.168.1.2 5

The above configuration means:

Enable mod_bw, restrict all file types are also enabled

Maximum bandwidth of all clients is 300k, maximum concurrent connection is 100

The maximum bandwidth of 192.168.1.2 is 100k and the maximum concurrent connection is 5.

The maximum bandwidth of the client using firefox is 100k

The maximum bandwidth of the client using wget is 200k

The maximum bandwidth for files in avi format over 600k is 200kbyte/s.

Example 2:

Bandwidthmodule on

Forcebandwidthmodule on

Largefilelimit .avi 1 20000

Largefilelimit .mpg 1 20000

Servername

This example limits the virtual host, and the specified file types avi and mpg must have a maximum bandwidth of 20kforcebandwidthmodule on.

Example 3:

Bandwidthmodule on

Addoutputfilterbytype mod_bw text/html text/plain

Bandwidth all 5000

Servername

These are all the contents of the article "how to limit concurrent connections and download speeds in apache under Linux". Thank you for reading! I believe you will gain a lot after reading this article. The editor will update different knowledge for you every day. If you want to learn more knowledge, please pay attention to the industry information channel.

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