Detailed introduction to linux host name configuration

[root@client ~]# vi /etc/sysconfig/network

# Created by anaconda
NETWORKING=yes
hostname=client

 Restart the network:

[root@client ~]# systemctl restart network
[root@client ~]# hostname
client
[root@client ~]#

[root@client ~]# hostnamectl set-hostname client

[root@server ~]# hostnamectl set-hostname server

[root@server ~]# systemctl restart network
[root@server ~]# hostname
server
[root@server ~]# uname -n
server

vi /etc/hosts

192.168.30.8 client
192.168.30.9 server

[root@client ~]# ping server -c 3
PING server (192.168.30.9) 56(84) bytes of data.
64 bytes from server (192.168.30.9): icmp_seq=1 ttl=64 time=0.616 ms
64 bytes from server (192.168.30.9): icmp_seq=2 ttl=64 time=0.384 ms
64 bytes from server (192.168.30.9): icmp_seq=3 ttl=64 time=0.566 ms

--- server ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 0.384/0.522/0.616/0.099 ms
[root@client ~]#

[root@Server ~]# ping client -c 3
PING client (192.168.30.8) 56(84) bytes of data.
64 bytes from client (192.168.30.8): icmp_seq=1 ttl=64 time=0.502 ms
64 bytes from client (192.168.30.8): icmp_seq=2 ttl=64 time=0.678 ms
64 bytes from client (192.168.30.8): icmp_seq=3 ttl=64 time=0.323 ms

--- client ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 0.323/0.501/0.678/0.144 ms
[root@Server ~]#

192.168.30.8 client
192.168.30.9 server

C:\Users\10287>ping client -n 3

Pinging client [192.168.30.8] with 32 bytes of data:
Reply from 192.168.30.8: Bytes=32 Time<1ms TTL=64
Reply from 192.168.30.8: Bytes=32 Time<1ms TTL=64
Reply from 192.168.30.8: Bytes=32 Time<1ms TTL=64

Ping statistics for 192.168.30.8:
    Packets: Sent = 3, Received = 3, Lost = 0 (0% loss),
Estimated round trip time in milliseconds:
    Shortest = 0ms, Longest = 0ms, Average = 0ms