With the recent release of cPanel & WHM version 58 there has been the addition of an AutoSSL feature, this tool can be used to automatically provide Domain Validated SSLs for domains on your WHM & cPanel servers.
Initially this feature was released with support provided for only cPanel (powered by Comodo) based SSL certificates, with the plans to support more providers as things progressed. As of now, cPanel & WHM servers running version 58.0.17, and above, can now also use Let’s Encrypt as an SSL provider. More information on Let’s Encrypt can be found here.
In order to install the Let’s Encrypt AutoSSL provider plugin you will simply log in to the server as the root user via SSH and execute the following command:
Running this will add and install the necessary RPM files in order to support Let’s Encrypt as an AutoSSL provider. The command should yield results similar to the following:
To double check that this has been successful you can simply pull up WHM and load the ‘Manage AutoSSL’ page. Upon loading this page you should see a list similar to the following screenshot.
If your server’s ‘Manage AutoSSL’ page shows the same options as above you have successfully enabled Let’s Encrypt for AutoSSL.
One thing to keep in mind is that there are some domain and subdomain limits that are enforced by Let’s Encrypt. More details on that can be found in cPanel documentation here: Manage AutoSSL – Domain and rate limits.