yum install xinetd tftp tftp-server

[root@k8svip ~]# cat /etc/xinetd.d/tftp
# default: off
# description: The tftp server serves files using the trivial file transfer \\
#  protocol.  The tftp protocol is often used to boot diskless \\
#  workstations, download configuration files to network-aware printers, \\
#  and to start the installation process for some operating systems.
service tftp
{  
socket_type    = dgram  
protocol    = udp  
wait      = yes  
user      = root  
server      = /usr/sbin/in.tftpd
server_args    = -s /var/lib/tftpboot -c  
disable      = no  
per_source    = 11  
cps      = 100 2  
flags      = IPv4
}
 [root@k8svip ~]#

[root@k8svip ~]# systemctl restart xinetd.service
[root@k8svip ~]# tftp -v 127.0.0.1
Connected to 127.0.0.1 (127.0.0.1), port 69
tftp> put a.txt
putting a.txt to 127.0.0.1:a.txt [netascii]
Sent 43 bytes in 0.0 seconds [191536 bit/s]
tftp> quit
[root@k8svip ~]# ls /var/lib/tftpboot/ -l
總用量 4
-rw-rw-rw- 1 nobody nobody 43 5月   9 16:22 a.txt
[root@k8svip ~]#