Bizarre redirect to old domain, what does Prestashop installation modify in Apache?

[prestadev777]

I intended to set up a Prestashop based online store at www.my-online-store.com (names changed to protect privacy).

 

I hadn't yet mapped the domain name www.my-online-store.com to my server, so I installed Prestashop under a virtual subfolder of another domain I own as follows:

 

www.another-website-i-own.com/prestashop

 

(I use multiple domains on a single VPS server via Apache virtualhosts.)

 

I later mapped www.my-online-store.com DNS settings to my server, and set up the appropriate virtualhost file in Apache (/etc/apache2/sites-available) mapping this domain to the store's folder on my server. And I removed the mapping of www.another-website-i-own.com/prestashop to the store's folder on my server.

 

 

Here's the bizarre thing: when I go to www.my-online-store.com on my browser, I get redirected me to www.another-website-i-own.com/prestashop (and there's nothing at the latter location, just an error page).

 

 

What I've checked so far:

• It's not a browser caching problem. I've cleared the cache in Chrome, used "Chrome's incognito" mode, and tried Safari on a different computer. Same result.
• It doesn't seem to be a .htaccess file that's doing this. I've searched my server for .htaccess files using grep, and nothing relevant to the Prestashop installation came up.
• I've checked the hosts file in /etc, and there's nothing related to the Prestashop installation in there.

 

I want to understand what the Prestashop installation did that causes this. Any ideas? (I will eventually reinstall Apache and reinstall Prestashop under the correct domain name, but I want to understand why this happened).

 

Lastly, I have access to all the log files, so if someone can suggest what I should examine to get to the root of this, I will do that.

Edited June 28, 2016 by prestadev777 (see edit history)

[Knowband Plugins]

First thing that we would recommend you to check is "DB_PREFIX_shop_url" table in your prestashop database.

 

When you install Prestashop, it store site URL in this table too. It seems that you haven't updated your store URL over there, that is why facing this issue.