修改主机名
vim /etc/hostname
修改主机映射 ，重启生效
root@temple-102:~# cat /etc/hosts
127.0.0.1 localhost
127.0.1.1 mysy-SYS-7048GR-TR
127.0.1.1 temple-102
# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters