How to reset certificate or change hostname from shell

I've use a templates for create my new VPS (KVM)

But now has a problem, because on template server certificate (Free) it's outdated.

My config it's secure, and when try access, send to hostname (hostname it's name of template and not actual name)

On this point, I can't access to WHM

I like reset hostname and recreate SSL certificate or not force to move access to hostname for access to WHM interface and change hostname.

Apreciate help.

 

Thanks.

Also I need run fater, /usr/local/cpanel/bin/checkallsslcerts because command set_hostname not work properly when change certificate.