Use tftp for installation under Linux system

1. Description:

TFTP is the simplest network protocol for downloading remote files. It is implemented in the UDP protocol. The tftp development environment of embedded linux includes two aspects: one is the tftp-server support of linux server, the other is the tftp-client support of embedded target system. Because u-boot itself has built-in support for tftp-client, the embedded target system side does not need to be configured.

Xinetd (eXtended InterNET services daemon) is a new generation of network daemon service program, also known as super INTERNET server, which is often used to manage a variety of lightweight INTERNET services. Xinetd provides functions similar to inetd+tcp_wrapper, but more powerful and secure.

Second, install tftp server:

Xinetd, tftp, tftp-server need to be installed

1. If you can access the Internet, install it through yum:

Yum-y install xinetd

Yum-y install tftp

Yum-y install tptp-server

2. If you cannot surf the Internet, you can directly install the rpm package provided:

Rpm-ivh xinetd-2.3.14-38.el6.src.rpm

Rpm-ivh tftp-0.48-3.fc9.src.rpm

Rpm-ivh tftp-server-0.48-3.fc9.i386.rpm

Note, the installation package can be found in my Baidu Cloud, download link: http://pan.baidu.com/s/1c2tOfKW

3. Configure tftp server:

(1), modify / etc/xinetd.d/tftp file

Change disable=yes to disable=no

Change server_args=-s / var/lib/tftpboot to server_args=-s / tftpboot/-c

(2) modify / etc/sysconfig/selinux file

SELINUX=disabled (the default is enforcing) should be changed to disabled

Note: this step requires restarting the server to take effect.

Can be temporarily shut down (no need to restart the machine)

Setenforce 0

(3) create a new tftpboot directory and add permissions:

Mkdir / tftpboot/

Chmod 775 / tftpboot

Start the tftp server:

Service xinetd restart

Check whether the tftp service is enabled:

Netstat-a | grep tftp

Udp 0 0 *: tftp *: * indicates that the service has been enabled and the tftp configuration is successful

5. Use the command:

Copy the test.tar file to the directory / tftpboot

Download the file on the client:

Tftp-gr test.tar 192.168.2.100

Note frequently asked questions:

1. Selinux needs to be closed.

2. The / tftpboot directory needs to be created under the root and given sufficient permissions to facilitate the client to download