: Managing multiple reverse proxies for one virtual host in apache2 I have many reverse proxies defined for my js-host VirtualHost, like so: /etc/apache2/sites-available/js-host <VirtualHost *:80>

@Ravi8258870

I came up with a reasonable solution to this problem. Instead of mixing core js-host configuration with lots of reverse proxy configuration, I separated the two. js-host is now a standalone site that knows nothing about the other services. The key to this approach is to add a reverse proxy for '/' to the core js-host site below all the other reverse proxy config.

Even though there is still lots of reverse proxy config in one config file, the config file is only for reverse proxy config. Here's what it looks like:

/etc/apache2/sites-available/js-host

You must give the virtualhost acting as your proxy server the hostname you wish your users to use. Also, I found a more concise way to set up a reverse proxy using RewriteRule.

LoadModule proxy_module lib/httpd/mod_proxy.so
LoadModule proxy_http_module lib/httpd/mod_proxy_http.so

ProxyRequests off
<Proxy *>
Order allow,deny
Allow from all
</Proxy>

<VirtualHost *:80>
ServerName js-host.example.com
RewriteEngine on

# Create reverse proxies via RewriteRule with the 'P' flag.
RewriteRule ^/serviceA/(.*)$ 192.168.100.50/ [P]
RewriteRule ^/serviceB/(.*)$ 192.168.100.51/ [P]
[...]
RewriteRule ^/serviceZ/(.*)$ 192.168.100.75/ [P]

# This links '/*' (anything not handled above) to js-host-core.
# '/' must come last, otherwise the reverse proxies above are ignored.
ProxyPass / js-host-core.example.com:2000/ ProxyPassReverse / js-host-core.example.com:2000/ </VirtualHost>


The core site now has ServerName js-host-core.example.com. All other configuration is the same.

The reason this solution is OK is that I can add or remove RewriteRule lines easily with a script, and when I restart this instance of apache, it restarts very quickly, and my core site stays up and running, so I don't have to worry about cycle time, losing my cache, or any other negative effects related to site cycling.

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