Dynamic configuration of large-capacity Virtual Hosts

Method 1: Simple Dynamic VM
Code:
This is the configuration method of the virtual host in the httpd. conf file. mod_vhost_alias is used here.

# Obtain the server name from host: Header server name
UseCanonicalName off

# Here, the log format can be used to separate logs of different virtual hosts using the first parameter field in the future
Logformat "% v % H % L % u % t/" % R/"% S % B" vcommon
Customlog logs/access_log vcommon

# Include the server name in the path of the returned request file name
Virtualdocumentroot/root directory of the VM space/% 0/htdocs
Virtualscriptalias/root directory of the VM space/% 0/cgi-bin
# Create/% 0/htdocs first, and put the file in htdocs for access
# % 0 indicates the name of the server name of the VM, for example, www.net.cn.

Change UseCanonicalName off to UseCanonicalName DNS to implement IP address-based virtual hosts. The server name to be inserted in the file path is parsed by the IP address of the VM.

Method 2: Multiple Dynamic Virtual Hosts
Code:
UseCanonicalName off

Logformat "% v % H % L % u % t/" % R/"% S % B" vcommon

<Directory/www/commercial>

Options followsymlinks
AllowOverride all

</Directory>

<Directory/www/homepages>

Options followsymlinks
AllowOverride none

</Directory>

<Virtualhost 111.22.33.44>

Servername www.commercial.isp.com

Customlog logs/access_log.commercial vcommon

Virtualdocumentroot/www/commercial/% 0/docs
Virtualscriptalias/www/commercial/% 0/cgi-bin

</Virtualhost>

<Virtualhost 111.22.33.45>

Servername www.homepages.isp.com

Customlog logs/access_log.homepages vcommon

Virtualdocumentroot/root directory of the VM space/% 0/htdocs
Virtualscriptalias/root directory of the VM space/% 0/cgi-bin

</Virtualhost>

Method 3: IP address-based VM
Code:

# Obtain the server name from IP address reverse resolution)
UseCanonicalName DNS

# Include IP addresses in logs to facilitate subsequent distribution
Logformat "% A % H % L % u % t/" % R/"% S % B" vcommon
Customlog logs/access_log vcommon

# Include IP address % 0 in the file path to indicate IP Address
Virtualdocumentrootip/www/hosts/% 0/docs
Virtualscriptaliasip/www/hosts/% 0/cgi-bin

Method 4: mod_rewrite VM System
Code:

Rewriteengine on

Rewritemap lowercase INT: tolower

# Check whether the hostname is correct before rewriterule can take effect
Rewritecond $ {lowercase: % {SERVER_NAME} ^ www/. [A-z-] +/. ISP/. com $

# Clean the VM name to the beginning of the URI
# [C] indicates that the result of this rewrite will be used in the next rewrite rule
Rewriterule ^ (. +) $ {lowercase: % {SERVER_NAME }}$ 1 [c]

# Create the actual file name
Rewriterule ^ www/. ([A-z-] +)/. ISP/. com/(. *)/home/$1/$2

Highlights
Method 5: Use an independent VM configuration file
When you modify vhost. map, you do not need to restart Apache.
Code:

This layout utilizes the advanced features of mod_rewrite to convert data in an independent VM configuration file. This can be more flexible, but requires more complex settings.

The vhost. map file contains content similar to the following:

Www.customer-1.com/www/Mers MERs/1
Www.customer-2.com/www/Mers MERs/2
#......
Www.customer-N.com/www.mers MERs/n

HTTP. conf includes:

Rewriteengine on

Rewritemap lowercase INT: tolower

# Defining image files
Rewritemap vhost TXT:/vhost. Map path/vhost. Map

# Process name change as in the preceding example
Rewritecond % {request_uri }! ^/Icons/
Rewritecond % {request_uri }! ^/Cgi-bin/
Rewritecond $ {lowercase: % {SERVER_NAME} ^ (. +) $
# File-based re ing
Rewritecond $ {vhost: % 1} ^ (/. *) $
Rewriterule ^/(. *) $ % 1/docs/$1

Rewritecond % {request_uri} ^/cgi-bin/
Rewritecond $ {lowercase: % {SERVER_NAME} ^ (. +) $
Rewritecond $ {vhost: % 1} ^ (/. *) $
Rewriterule ^/(. *) $ % 1/cgi-bin/$1

<Virtualhost *: 81>
# Include the server name in the filenames used to satisfy requests
Virtualdocumentroot D:/usr/www/html/% 2 +/web/% 1
Virtualscriptalias D:/usr/www/html/% 2 +/web/cgi-bin
<Directory "D:/usr/www/html/nicenic.net/web/">
Options + Indexes
</Directory>
# Jkmount/*. jsp ajp13
# Jkmount/*. Do ajp13
# Jkmount/servlet/* ajp13
# Jkmount/manager/* ajp13
# Jkmount/WEB-INF/* ajp13
</Virtualhost>