Name
The website name is defined once when you create the website initially. All parts configured within the system are tied to this name so it cannot be modified afterwards.
Rules for the name
The name you choose must fulfill the following rules:
consist of lower case letters, digits, underscores or dashes
must start with a lower case letter
maximum length is 32 characters
Where this name is used
Among others, the name is used to configure:
system user and group
database name and username (applies only when a database is configured directly via cockpit)
webserver vHost name
configuration files
type related cronjobs
unix sockets (for example used between webserver and PHP)