Moodle apache proxy - apache

Question

I'm having troubles setting up a moodle instance behind an apache proxy.
Here's my apache front-end that proxies to the running server.
NameVirtualHost www.example.com:443
<VirtualHost www.example.com:443>
ProxyPreserveHost On
ProxyRequests Off
ServerName www.example.com
ServerAlias www.example.com
ProxyPass / http://192.168.1.101/
ProxyPassReverse / http://192.168.1.101/
SSLEngine on
SSLCertificateFile /etc/ssl/crt/example.com.crt
SSLCertificateKeyFile /etc/ssl/crt/example.com.key
SSLCACertificatePath /etc/ssl/crt
SSLCertificateChainFile /etc/ssl/crt/example.com.bundle.crt
</VirtualHost>
On the concrete server I've got.
$CFG->wwwroot = 'http://192.168.1.101/classes';
And
<VirtualHost 192.168.1.101:80>
ServerAlias 192.168.1.101
ServerAdmin webmaster#localhost
ServerName 192.168.1.101
DocumentRoot /var/www/
<Directory />
Options FollowSymLinks
AllowOverride None
</Directory>
<Directory /var/www/>
Options Indexes FollowSymLinks MultiViews
AllowOverride None
Order allow,deny
allow from all
</Directory>
ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
<Directory "/usr/lib/cgi-bin">
AllowOverride None
Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
Order allow,deny
Allow from all
</Directory>
ErrorLog ${APACHE_LOG_DIR}/error.log
# Possible values include: debug, info, notice, warn, error, crit,
# alert, emerg.
LogLevel warn
CustomLog ${APACHE_LOG_DIR}/access.log combined
Alias /doc/ "/usr/share/doc/"
<Directory "/usr/share/doc/">
Options Indexes MultiViews FollowSymLinks
AllowOverride None
Order deny,allow
Deny from all
Allow from 127.0.0.0/255.0.0.0 ::1/128
</Directory>
</VirtualHost>
The thing is that I keep getting that moodle is only accessible from 182.168.1.101 something is not quite matching the expected. I've been able to configure confluence and other platforms but moodle doesn't work.
The concrete error is as follows.
Incorrect access detected, this server may be accessed only through "http://192.168.1.101/classes" address, sorry. Please notify server administrator.
Does anyone know what might be happening?

Answer 1

Its a Moodle error message, the wwwroot in config.php has to match.
You could try
$CFG->wwwroot = 'http://' . $_SERVER['HTTP_HOST'];
Although this might not allow some command line updates in Moodle.

Answer 2

On the proxy server, modify the VirtualHost entry as follows:
ProxyPass / http://192.168.1.101/classes
ProxyPassReverse / http://192.168.1.101/classes
For Moodle, what you set in Moodle's config.php for
$CFG->wwwroot
...has to match your ProxyPass and ProxyPassReverse values in the VirtualHost definition on the Proxy server.

Answer 3

So, what's the URL that points to your front end?
That's what you need to set $CFG->wwwroot to.