Good Practice for Leaf and Intermediate Certs for CDNs

Hello

I have uploaded key and fullchain files to my CDN. now if I renew my certificate, should I add the new cert and chain files to the CDN again?

The chain would most likely remain the same - when renewing from the same CA.
The public cert would change on renewal.

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The chain will usually stay the same, but it may change at any time.

When issuing a new certificate, an automated Let’s Encrypt client should always check if the chain has changed and update it if necessary.

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