Let's Encrypt certs after instance upgrade

Question

Hello, I have an existing Lightsail instance that I need to upgrade to a slightly more powerful model. I am using Let's Encrypt for the cert.  When upgrading a snapshot to a more power instance, what do I need to do about the existing installation of the cert?  The new instance will obviously not have the same IP.  I know I will have to update the DNS and wait for it to propagate out to the interwebs but will I have to remove the old cert and reinstall a new one or will everything just "work fine" in the new instance?  Maybe I just need to manually update the cert?  Or maybe do nothing at all?  any insight anyone can provide would be great.  Thanks

Accepted Answer

A certificate is not tied to an IP address, so it should work fine on the new instance. However, you might as well make sure the Let's Encrypt certificate generator is working properly on the new instance by generating a new certificate once DNS resolves to the new IP address (required for the domain validation process). But strictly speaking you can continue using the old certificate on the new instance (assuming it's still valid).

Answer

smoothSailing,  thanks for your response.  This is helpful!

Answer

Robmm, thank you for getting back to me.  I appreciate it and it is exactly what I am looking for.

Answer

The Lightsail static IP can be assigned to the new instance. If the certificate works now it should work once the new instance is up. The DNS change will take time to propagate.

Let's Encrypt certs after instance upgrade

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