Redirect domain.com/path to another Apache Server - apache

Question

I have 3 Apache VM's running currently:
A) ProxyPass (Hosts Nothing)
B) Main Website
C) ZoneMinder Website
If you access example.com you get to the website, and can navigate around, but...
If I manually type http://example.com/zm trying to access zoneminder
It redirects http://example.com/zm in my remote browser to http://192.168.1.255:443/foo*
I can't seem to get my redirect working correctly, can anybody see what I am doing wrong?
Configs:
A) ProxyPass Server:
<VirtualHost *:80>
ServerName www.example.com
RedirectPermanent / http://example.com
</VirtualHost>
<VirtualHost *:80>
ServerName example.com
ProxyRequests Off
<Proxy *>
Order deny,allow
Allow from all
</Proxy>
ProxyPass / http://192.168.1.255:80/
ProxyPassReverse / http://192.168.1.255:80/
<Location />
Order allow,deny
Allow from all
</Location>
</VirtualHost>
B) Main Website
<VirtualHost *:80>
ServerName example.com
DocumentRoot /var/www/html
LogLevel warn
ErrorLog ${APACHE_LOG_DIR}/example.log
CustomLog ${APACHE_LOG_DIR}/example-access.log combined
</VirtualHost>

Answer 1

Got it working!
The setup:
Server A) Apache server that only serves proxypass and doesn't host anything
Server B) Apache server that hosts main domain.com
Server C) Apache server that hosts ZoneMinder # domain.com/zm
Server A Config:
<VirtualHost *:80>
ServerName domain.com
Redirect / https://www.domain.com/
</VirtualHost>
<VirtualHost *:443>
ServerName www.domain.com
ProxyRequests Off
<Proxy *>
Order deny,allow
Allow from all
</Proxy>
SSLProxyEngine On
SSLProxyCheckPeerCN on
SSLProxyCheckPeerExpire on
SSLEngine on
SSLCertificateFile /location of .crt
SSLCertificateKeyFile /location of .key
SSLCACertificateFile /location of .crt
ProxyPreserveHost on
ProxyPass /zm https://192.168.1.43:443/zm
ProxyPassReverse /zm https://192.168.1.43:443/zm
ProxyPass / https://192.168.1.42:443/
ProxyPassReverse / https://192.168.1.42:443/
<Location />
Order allow,deny
Allow from all
</Location>
</VirtualHost>
Notes: It is important to have the /zm come before the "/" catch all. I also noticed it FAILED if i used /zm/.
Server B Config:
<VirtualHost *:443>
ServerName www.domain.com
DocumentRoot /var/www/html
LogLevel warn
ErrorLog ${APACHE_LOG_DIR}/domain.log
CustomLog ${APACHE_LOG_DIR}/domain.log combined
SSLEngine on
SSLCertificateFile /location of .crt
SSLCertificateKeyFile /location of .key
SSLCACertificateFile /location of .crt
</VirtualHost>
Note: it is not necessary to have *:80 redirects or Server Alias as only correctly formatted requests are sent to this server via ProxyPass filtering beforehand.
Server C Config: (domain.com/zm)
<VirtualHost *:443>
ServerName www.domain.com
DocumentRoot /var/www/html
LogLevel warn
ErrorLog ${APACHE_LOG_DIR}/domain.log
CustomLog ${APACHE_LOG_DIR}/domain.log combined
SSLEngine on
SSLCertificateFile /location of .crt
SSLCertificateKeyFile /location of .key
SSLCACertificateFile /location of .crt
</VirtualHost>
Yes it is the same. It works so I am happy!
Note: All 3 servers have my SSL certs installed, but I did not touch default-ssl.conf.