Tips&Tricks to work with embedded systems

From EnneEnneWiki

Contents 1 Setting up a TFTP server (xinetd/RPM version) 2 Setting up a NFS server

Setting up a TFTP server (xinetd/RPM version)

First install from the rpm package:

giometti@zaigor:~$ rpm -ihv tftp-server-*.rpm

Create a directory for the files:

giometti@zaigor:~$ /tftpboot
giometti@zaigor:~$ chown nobody:nobody /tftpboot

The directory /tftpboot is owned by user nobody, because this is the default user id set up by tftpd to access the files.

Edit the file /etc/xinetd.d/tftp to look like the following:

service tftp
{
       socket_type     = dgram
       protocol        = udp
       wait            = yes
       user            = root
       server          = /usr/sbin/in.tftpd
       server_args     = -c -s /tftpboot
       disable         = no
       per_source      = 11
       cps             = 100 2
}
                       

The changes from the default file are the parameter disable = no (to enable the service) and the server argument -c. This argument allows for the creation of files, which is necessary if you want to save boot or disk images. You may want to make TFTP read only in normal operation.

Then reload xinetd:

giometti@zaigor:~$ /etc/rc.d/init.d/xinetd reload

You can use the tftp command, available from the tftp (client) rpm package, to test the server. At the tftp prompt, you can issue the commands put and get.

Setting up a NFS server

TODO