The hostname is used by many of the networking programs (such as sendmail, Apache servers) to identify the machine. By default, your server is started with the server’s given name as the hostname. Some software, such as cPanel, CWP , VestaCP requires a valid Fully Qualified Domain Name (FQDN) for the hostname. Types of hostnames (The hostname can be configured as follows): Static host name assigned by sysadmin. For example, “server1”, “wwwBot2”, or “host.datahead.biz”. Transient/dynamic host name assigned by DHCP or mDNS server at run time. Pretty host name assigned by sysadmin/end-users and it is a free-form UTF8 host name for presentation to the user. For example, “Rubel’s netbook”. On a CentOS Linux 7 server you can use any one of the following tool to manage hostnames: hostnamectl command : Control the system hostname. This is a recommended method. nmtui command : Control the system hostname using text user interface (TUI). nmcli command : Control the system hos
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