How to add additional domains to a multi-domain certificate


I created a multi-domain certificate like this:

certbot certonly --webroot -w /home/www -d -d -w /home/ww2 -d -w /home/ww3 -d

If I want to add an additional subdomain to this certificate (, for example), do I issue the whole command above along with the new subdomain added to the end, or is there a way to append a new domain to the existing certificate without having to specify all the domains again?




Not currently in Certbot. Using --expand and specifying only the new domain is a common error that doesn’t do what users may expect (it removes all the other domains).


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