My Rails 2.1 app is changing DNS domains. For example:
The app uses Apache2, mongrel_cluster, MySQL.
I would like the existing users who visit www.oldcompany.com URLs to be:
1. Notified via an HTML page that the site has changed from oldcompany
to new company and then redirect them to newcompany.
This has to be done on the same server which gets new host name etc.
I know that it can be done with mod_rewrite, but I am not proficient
with it. Is there a rewrite rule that I can put into my httpd.conf file
that will detect the incoming URLs with oldcompany hostnames and
redirect them to a particular HTML page?
For some time, I can keep both the new and old DNS names pointed to the
same IP address.