How to use mod_rewrite to redirect a URL

Posted on 2014-12-22
Last Modified: 2014-12-23
I'm trying to find the best way of accomplishing the following:

I have 2 separate web servers, let's call them and

The server hosting is being decommissioned, but there are still active links pointing to it that my customers may continue to use.

Some of the customer links point directly to a perl script with embedded variables, something like this:

Once I point the domain to the server hosting, I'd like the above URL to be redirected to:

It makes no difference to me whether the end users sees the change in domain name, but I don't want them to get an SSL warning or error.

Is the best way to handle this to use a rewrite rule, an alias, or some other method? Please be as specific as possible with rewrite rules -- my skills are beginner in using mod_rewrite.

Question by:datastarstar
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 4
LVL 58

Accepted Solution

Gary earned 500 total points
ID: 40513534
Copy everything to the new server - i.e. the old domain
Update the DNS
When the DNS has propogated (upto 48 hours) you can disable the old server and initiate an htaccess on the new server to redirect the old domain to the new domain

But if the old sites ssl cert is expiring then it won't work once it has expired, so you would need to ensure you update it while there may still be links out there.

Author Comment

ID: 40513698
The SSL cert on the old server is still valid -- can I just move that to the new server or does it have to be reissued? And is it possible to have certificates for both domain names in the same crt file?
LVL 58

Expert Comment

ID: 40513716
You can just move everything.

And is it possible to have certificates for both domain names in the same crt file?
No, each cert needs to be seperate
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!


Author Comment

ID: 40513813
Ok, I'm a little confused about this part. I will have no need to segregate the two sites on the new server. I was planning to just point the old domain ( to the same IP of the server hosting  Can I use a ServerAlias in my apache config in the same virtualhost for How then would I specify the location of separate SSL certificate files?

I'm thinking my virtualhost directive would look something like this:
    SSLEngine on
    SSLCertificateFile       /etc/httpd/conf/ssl/abc.crt
    SSLCertificateKeyFile    /etc/httpd/conf/ssl/ssl.key
LVL 58

Expert Comment

ID: 40513826
Ok you can point both domains to the same document root, then in your htaccess setup the redirect condition based on the old domain name
But you can't have one cert for two different domains which is where you are stuck since you are using SSL for the site.

Author Comment

ID: 40514720
What if I pointed xyz to a different IP on the new box and and had a virtualhost section for xyz that used the same document root as abc but pointed to a different ssl certificate? Would that work?
LVL 58

Expert Comment

ID: 40514893
That's what I was saying above.

Author Comment

ID: 40514965
Got it -- thanks for your help!

Featured Post

Portable, direct connect server access

The ATEN CV211 connects a laptop directly to any server allowing you instant access to perform data maintenance and local operations, for quick troubleshooting, updating, service and repair.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Over the last year I have answered a couple of basic URL rewriting questions several times so I thought I might as well have a stab at: explaining the basics, providing a few useful links and consolidating some of the most common queries into a sing…
Periodically we have to update or add SSL certificates for customers. Depending upon your hosting plan you may be responsible for the installation and/or key generation. In the wake of Heartbleed many sites were forced to re-key. We will concen…
There are cases when e.g. an IT administrator wants to have full access and view into selected mailboxes on Exchange server, directly from his own email account in Outlook or Outlook Web Access. This proves useful when for example administrator want…
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor ( Top Charts is a view in which you can set seve…

623 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question