Red Hat Enterprise Linux 5 Administration Unleashed

52CHAPTER 1Installing Red Hat Enterprise LinuxConfiguring the tftp ServerInformation such as the IP address or hostname of the network server sharing the installationtree to use must be retrieved by the client to be installed. The tftp service is used forthis purpose. The server running this xinetd service can be the same system used as theNFS, FTP, or HTTP server exporting the installation tree.The tftp server is not installed by default. Use Red Hat Network as described in Chapter 3,“Operating System Updates,” to install the tftp-server package, which provides the tftpserver. You also need the syslinux package if it is not already installed.The following information must be set for the tftp server:. Operating system identifier: One unique word that describes which installation treethe PXE server points the client to.This is used for a unique directory name.. Protocol for installations: Protocol used to export the installation tree on the server.Must be one of NFS, HTTP, or FTP. If non-anonymous FTP is required, uncheck theAnonymous FTP option and enter the username and password for the FTP server.. Kickstart location (optional): If also performing a kickstart installation, the locationof the kickstart file. The location can be a local file on the PXE server or a URL suchas http://server.example.com/ksfiles/ks.cfg.. Network server IP address: IP address or hostname of the NFS, FTP, or HTTP serverexporting the installation tree. If a hostname is used, the server must be able toresolve it to a valid IP address.. Installation tree location: Directory on the network server containing the installationtree. Must contain the images/pxeboot/ directory.Setting Up the tftp Server FilesFirst, set up the /tftpboot/linux-install// directory and populate it withthe files necessary to start the installation program via PXE (all commands must beexecuted by the root user):1. The /tftpboot/ directory is created by the tftp-server package. Create the/tftpboot/linux-install/ directory.2. Copy the /usr/lib/syslinux/pxelinux.0 file installed by the syslinux packageinto the newly created /tftpboot/linux-install/ directory:cp /usr/lib/syslinux/pxelinux.0 /tftpboot/linux-install/3. Create the /tftpboot/linux-install/msg/ directory.4. Copy all the .msg files from the isolinux/ directory in the installation tree or from thefirst installation CD in the newly created /tftpboot/linux-install/msg/ directory.