Date: 2009may6 OS: Linux Q. I just renew by SSL certificate. Now what do I do? A. There is very little to do. Assuming you have been successfully using an old certificate for a year or more. You just need to replace your old example.com.crt with your new example.com.crt file in the folder where it lives (for me that's /etc/pki/example.com). And restart the services that use it. And, of course, give the services a try. There is no need to remove the key or anything else.