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I have a domain, say domain.com.

I have some random subdomains which all point to the same server. (eg: user-00.domain.com, user-01.domain.com, etc.)

I also have some fixed sub domain names, let's say fixed.domain.com which also point on the same server, but into docker containers.

My server is a docker machine:

  • I have certbot installed as a native application (non dockerised). This certbot handle the wildcard certificate for all the random subdomains
  • I have a container which handles the certificate for the fixed domain with letsencrypt.

If I renew one of the fixed certificate, could there be any "merging" issue with the wildcard one? (and vis-versa)

dagatsoin
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1 Answers1

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One can have multiple certificates which match a domain at the same time, i.e. certificates for same subject with overlapping validity times, certificates with different but overlapping subjects/SAN ... . All what matters is the specific certificate which is served when connecting to a specific server, i.e. only this certificate will be considered and not certificates which might be installed on other servers etc.

Steffen Ullrich
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