This guide is for self-managed VPS customers who wish to change their cPanel AutoSSL provider/CA (Certificate Authority).
Make sure you have a known-good backup of your current SSL/TLS library (certificates, keys, chains, etc) firstly - that's on you!
- Login to your CentOS/CloudLinux server via SSH
- Run the installation script and agree to the Terms
- Head to WHM > AutoSSL > Providers
- Select "Let's Encrypt"
- Agree if needed
- Save, then issue new certs
- Recheck all users
- Monitor for alerts
The server will notify you by default of any AutoSSL-related problems/warnings, so keep an eye out for any and make sure you resolve the root cause/s as you need to.