Prestashop 8.0.1 on Apache 2.4.54 behind reverse proxy Apache 2.4.54 gives Redirect Loop

[ledorze]

As says title, see Apache Vhost files below.

In Prestashop config,

Shop domain : shop.internal.domain
SSL domain : shop.internal.domain
Base URL : /
Redirect to the canonical URL : No redirection
Disable Apache's MultiViews option : Yes
Enable SSL : Yes
Enable SSL on all pages : Yes

shop.external.domain is a DNS alias to reverse proxy server.

So https://shop.internal.domain is working fine
But https://shop.external.domain fails in redirect loop

• I tried all fixes I found on this forum.
• I tried to set  unencrypted HTTP everywhere, vhosts and Prestashop. http://shop.internal.domain was working fine.
• I tried to set URL http://shop.external.domain everywhere in Prestashop config and Vhosts. On Reverse proxy Vhost, it requires a line in its hosts file to resolve shop.external.domain to Prestashop server. From reverse proxy itself, https://shop.external.domain was working fine by connecting directly to Prestashop server using the local host resolution above.

All this actions gave the same results :  redirect loop when trying https://shop.external.domain or http://shop.external.domain

I'm struggled on this problem since days.

What did I missed ?  Can somebody help ?

Or is Prestashop not compliant with reverse proxying ?

Thanks a lot.

 

Apache Vhost on Prestashop Server

 

Apache Vhost on Reverse Proxy Server

Edited February 25, 2023 by ledorze (see edit history)