Setting up mod_proxy_html on CentOS 7
I'm trying to do some testing on my web server to make sure reverse proxy is working as expected before putting it on a live environment, but I am running into some problems with mod_proxy and mod_proxy_html.
I have 2 virtual hosts, 1 on port 80 and 1 on port 8080. My goal is to have incoming requests for www.example.com/path/ to come in on port 80, and get reverse proxied to port 8080.
Here are my virtual host settings:
<VirtualHost *:8080>
ServerName www.example.com:8080
DocumentRoot /var/www/html/test
RewriteEngine On
RewriteCond %{REQUEST_URI} !^.*test
RewriteRule ^/?(.*) http://127.0.0.1:8080/test.html [R=301,L]
</VirtualHost>
<VirtualHost *:80>
ServerName www.example.com
ProxyHTMLEnable On
ProxyHTMLInterp On
ProxyPreserveHost Off
ProxyPass /path/ http://127.0.0.1:8080/
ProxyPassReverse /path/ http://127.0.0.1:8080/
ProxyHTMLURLMap http://127.0.0.1:8080/ /path/
</VirtualHost>
My /var/www/html/test has 2 files index.html and test.html
test.html contents are:
<HTML>
<BODY>
<a href="http://127.0.0.1:8080/index.html">TEST</a>
</BODY>
</HTML>
Going to www.example.com/path/ successfully gets proxied and redirected to www.example.com/path/test.html, but the link on the page still points to 127.0.0.1.
httpd -M does report loading proxy_module and proxy_html_module
I've also tried manually adding LoadModule to http.conf
LoadModule proxy_module /usr/lib64/httpd/modules/mod_proxy.so
LoadModule proxy_html_module /usr/lib64/httpd/modules/mod_proxy_html.so
Any thoughts on why it is not working properly? Am I configuring something incorrectly?
Answer
The mod_proxy_html package in CentOS 7 doesn't include any default ProxyHTMLLinks or ProxyHTMLEvents settings, so it does nothing unless you provide those settings yourself.
One way to do that is to copy /usr/share/doc/httpd-2.4.6/proxy-html.conf into /etc/httpd/conf.d/. That file contains the following settings, which should make things work:
ProxyHTMLLinks a href
ProxyHTMLLinks area href
ProxyHTMLLinks link href
ProxyHTMLLinks img src longdesc usemap
ProxyHTMLLinks object classid codebase data usemap
ProxyHTMLLinks q cite
ProxyHTMLLinks blockquote cite
ProxyHTMLLinks ins cite
ProxyHTMLLinks del cite
ProxyHTMLLinks form action
ProxyHTMLLinks input src usemap
ProxyHTMLLinks head profile
ProxyHTMLLinks base href
ProxyHTMLLinks script src for
ProxyHTMLEvents onclick ondblclick onmousedown onmouseup \
onmouseover onmousemove onmouseout onkeypress \
onkeydown onkeyup onfocus onblur onload \
onunload onsubmit onreset onselect onchange