How to install SSL on CWP hostname?

1 - Check that you should have an A record for the hostname. For example if your server hostname is cp.hostinpk.com, then you should have an A record for "cp" pointing to server IP

2 - Login to CWP Admin Panel>> Server Settings>>Change Hostname and then hit "Change Hostname" button after putting your desired hostname (in my case cp.hostinpk.com). This will only generate a valid LE SSL for your hostname when an A record is present against hostname

3 - Perform following command from shell

service cwpsrv reload

Change Ubuntu server Hoatname permanently

 Type the hostnamectl command :

sudo hostnamectl set-hostname newNameHere

Delete the old name and setup new name.

Next Edit the /etc/hosts file:

sudo nano /etc/hosts

Replace any occurrence of the existing computer name with your new one.

Reboot the system to changes take effect:

sudo reboot