CentOS Sets the FQDN (universal domain name) and hostname method _linux

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Copy Code code as follows:

[Root@rdo ~]# hostname
Rdo
[Root@rdo ~]# Hostname-f
Rdo.test.com

To achieve this effect, you need to modify two files

Edit/etc/sysconfig/network, you need to join a line, remember hostname, must be uppercase.

Copy Code code as follows:

# cat/etc/sysconfig/network
Networking=yes
Hostname=rdo

Edit/etc/hosts, add one line

Copy Code code as follows:

192.168.178.2 rdo.test.com RDO

Exit SSH, and then log in, it should take effect.