How to change or get the server hostname on Plesk server

In Plesk interface

1. Login to Plesk
2. Go to Tools & Settings > Server Settings > Full hostname:

Via Command Line Interface:

1. Connect to the server using SSH as root
2. To view hostname execute the command:

hostnameTo change server hostname execute the following command with preferred hostname value instead of host.example.com:

plesk bin server_pref –update -hostname host.example.comRestart sw-cp-server and sw-engine services:

service sw-cp-server restart
# service sw-engine restartIf the hostname was not changed, use the native SystemD utility(CentOS7/Debian8+/Ubuntu16): hostnamectl set-hostname host.example.com