Webserver Proxying - single public Apache HTTPD, multiple internal subdomains.
I needed only one Apache HTTPD server visible over the Internet, and subdomains provided by internal webservers. I proceeded with mod_proxy.
On SLES10, go to /etc/apache2 and create a file named proxy.conf:
# Sample configs
# by hardwyrd
# 05/22/2009
#
# Disclaimer:
# Use at your own risk. It works for me, it might not work for you.
# If you decide to use or follow this config, you agree that I am not responsible for the damage
# to your system.# Listen on internal interface only. Only mod_proxy uses this.
Listen 192.168.10.1:8080
# Set the user for mod_proxy
User nobody
Group nobody# Turn on proxy requests
ProxyRequests OnOrder deny,allow
Deny from all
# Declare your subdomain rechable from the internet.
Order deny,allow
Deny from all# Allow only from specific IP addresses or allow all if this is accessible from the net.
Allow from all# You can add as many
declarations as you can.
Create a virtual host on the public-facing Apache server. In SLES10, the config is at /etc/apache2/vhosts.d:
# Sample configs
# by hardwyrd
# 05/22/2009
#
# Disclaimer:
# Use at your own risk. It works for me, it might not work for you.
# If you decide to use or follow this config, you agree that I am not responsible for the damage
# to your system.# A virtual host config is needed so that we can redirect the subdomain requests coming in at port 80 to the internal Apache server.
# Create equivalent virtual host entries for every
declaration in the proxy.conf .
ServerName your-subdomain.your-domain.tld
ServerAlias your-subdomain.your-domain.tld
ProxyPass / http://your-subdomain.your-domain.tld/
ProxyPassReverse / http://rspace.focusoutsourcing.com/
To enable the public Apache server forward the requests to the proper internal Apache server, you can use an internal DNS server with the correct A record for the domain pointing to the IP of the internal Apache server. Or, the quickest way is to add the subdomain to the hosts file (/etc/hosts).
#/etc/hosts
192.168.10.22 your-subdomain.your-domain.tld
On the internal Apache server, create a standard virtual host for the subdomain.
That’s it! Only one apache server will be visible to the public, and yet serve multiple subdomains, spread among various internal Apache servers.
Enjoy!
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