Single SSL Certificate on Multiple Servers

Question

For the project I'm working on, I will have several servers and many subdomains (for example, * .mydomain.com). I am going to get this ssl certificate from godaddy - Unlimited Subdomains (Wildcard) $ 199.99 / year

Will I be able to use the certificate on all servers or do I need to buy a certificate for each server, since each of them has a unique ip?

Answer 1

Certificates are tied to a host name (or a wildcard host name), so you are perfectly using the same certificate on multiple machines.

However, when requesting a certificate, you usually create a private key on one of the servers. This private key must be copied to all computers in addition to the actual certificate received.

One of the scenarios is where you have www.domain.com resolving the IP address of the load balancer, which in turn redirects traffic to multiple servers. In this case, you only need a certificate for www.domain.com, which you copy (with a private key) to all servers in your cluster.