Same common name on 2 sites

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My domain is: and

I ran this command: certbot-auto? on Centos

It produced this output: two SSL certs for both domains

My web server is (include version): Apache 2.4

The operating system my web server runs on is (include version): Just moved it to Ubuntu 18.04

My hosting provider, if applicable, is: me

I can login to a root shell on my machine (yes or no, or I don’t know): yes

I’m using a control panel to manage my site (no, or provide the name and version of the control panel): no

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you’re using Certbot): certbot 0.31.0

Back when I setup the certificates of this site it was on Centos and I did them both at the same time, so now they share the Common Name of on the certificate. Practically speaking it’s fine but I would like to know if there’s away to have display it’s on own name on the certificate or a way to separate them?

Thanks in advance.

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Hi @joeker

one certificate has one CN (Common Name). But may have a lot of Subject Alternative Names (SAN).

A Letsencrypt certificate may have max. 100 SAN.

So you can create two certificates, one per domain to have two different CN.

But you shouldn't. Why? It's completely irrelevant. The CN hasn't a function.

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You’re right, I’m going to leave it be and move on. Thanks for the response


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