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I have a website at www.example.com that's using a Let's Encrypt wildcard certificate. It works great.

I also have a webapp that's running under Tomcat on an AWS EC2 instance. It runs at webapps.example.com so it could hypothetically use the same SSL cert.

I can download the SSL certs, but is it possible to install them in my EC2 instance? There's no Load Balancer, just a single instance so I don't think I can use Cert Manager or anything like that. How should I go about doing this? Do I configure this at the Tomcat level? The nginx level? Any ideas?

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  • More info needed. Is the website and the webapp hosted on the same server / instance? Do they have the same URL with different paths? Or different URLs?
    – MLu
    Commented May 28, 2021 at 1:04
  • If you can get the private key and certificate file then it will likely work.
    – Tim
    Commented May 28, 2021 at 1:18
  • The website is hosted on a commercial hosting site. The webapp is hosted on AWS. Completely different servers but they share a common base domain so the wildcard cert that I have is appropriate for both.
    – Sander Smith
    Commented May 28, 2021 at 2:16
  • I can get the cert and private key. But what do I do with them?
    – Sander Smith
    Commented May 28, 2021 at 2:16

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