Subdomain proxy vHost template for all users

[Gamecock]

I want the subdomain foo.exmple.com point to 127.0.0.1:8080 (via ProxyPass or ProxyPassReverse) for all of the users of cPanel server.

I want to apply this modification on default virtual host template effect all users accounts. (Looks like cpanel.example.com which is pointing to example.com:2082)

I can do this via .htaccess file:

RewriteEngine On
RewriteRule ^(.*)$ http://127.0.0.1:8080/$1 [P,L]

But it only works per account while there are +1000 domains on my server and I can't repeat that manually. (Also the user can delete or modify .htaccess file)
How can I perform that for all accounts/domains?

I know I should perform changes in Include Editor section of Apache Configuration, But I don't know which part of that and what statement to write.

I use Litespeed 6.0.1 on cPanel (CloudLinux)

 

[techAMIGO]

HI Gamecock

generally,if common unique rules needs to be affected to all virtual host you can add the rules to any of the following files

/etc/apache2/conf.d/userdata/custom_rule.conf
/etc/apache2/conf.d/includes/pre_virtualhost_global.conf
/etc/apache2/conf.d/includes/post_virtualhost_global.conf

but according to your requirement, each domain should have separate proxy pass where example.com will vary so above method will not work .
so in order to achieve that ,

you can edit the following apache template files

/var/cpanel/templates/apache2_4/vhost.default
/var/cpanel/templates/apache2_4/ssl_vhost.default

and add the following code at the end but just before the virtual host closing tag </virtualhost>

   RewriteCond %{HTTP_HOST} !^foo.[% vhost.servername %]$
   RewriteCond %{HTTP_HOST} ^foo\.
   RewriteCond %{HTTP:Upgrade} !websocket   [nocase]  
   ProxyPass "/" "http://127.0.0.1:8080" 
   ProxyPassReverse "/"  http://127.0.0.1:8080/

this is just a sample and you can change the code accordingly based on the requirement

after that rebuild the apache conf and restart apache , then all virtual host will be added with above apache settings automatically

/scripts/rebuildhttpdconf 
/scripts/restartsrv_httpd

to revert any chnages simply delete the added code and rebuild the apache again..

 

[cPRex]

Thanks, @techAMIGO !!!!