Published at LXer:
In CentOS or RHEL, there are three kinds of hostnames defined: (1) static, (2) transient, and (3) pretty. The "static" hostname is also known as kernel hostname, which is initialized from /etc/hostname automatically at boot time. The "transient" hostname is a temporary hostname assigned at run time, for example, by a DHCP or mDNS server. Both static and transient hostnames follow the same character restriction rules as Internet domain names.
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