Assigning new site DNS to existing domain


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My current domain is: with certbot installed
The new site we have been developing is at which currently gives “This site is not secure” warning which we ignore during development
But we are ready to publish the new site which means pointing the existing domain name to the new ip address 159…
Just wondering how will Certbot respond to the new dns settings? and can i anticipate problems?

My web server is (include version): a VPS on DigitalOcean

The operating system my web server runs on is (include version):Ubuntu 16.04

My hosting provider, if applicable, is: Digital Ocean

I can login to a root shell on my machine (yes or no, or I don’t know): yes

I’m not using a cpanel to manage my site just using DO tools and the command line


The Let’s Encrypt validation servers react to DNS changes very quickly. You should be able to issue a new certificate right away as soon as the changes appear on your authoritative DNS server.

There will be a brief window where visitors to your website get security errors. If you want to avoid any downtime at all, you could copy your old certificate to the new server and configure it before cutting it over.


Thanks for the 100% accurate (as it turned out) reply anticipating how my new system would respond to the change of IP - it was a painless process! and not requiring the copy of the old certificate to the new server
Your assistance was much appreciated


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