04-06-2011
Diskless RedHat from a SPARC server
Hi all
having a problem getting the redhat image to actually start loding and i receive a TFTP:Access Denied error after the redhat diskless machine grabs an IP from the solaris server which has a small scope set up on it.
Here is what I did: used 2 redhat machines and rsync'd a to a directory on one of them to get a good image. Then i tar'd that image up and dumped it to the export/diskless/rh directory on my solaris machine. Made the appropriate changes in the dfstab to share that directory out. Also, pointed the kernel appropriately in /tftpboot and went ahead and made the /etc/ethers entry even though i shouldnt need it. Tried with and without ethers file with the same result.
To me, it seems like it grabs the IP, but wont do the bootparams and then load the OS like on a solaris diskless installation.
I know, the simple answer is just use a redhat server or make the diskless x86 clients solaris...but thats not feasible to management. Anyone know if there is a setting in svccfg for tftp to allow this?
thanks for the help in advance
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RARP(8) Linux Programmer's Manual RARP(8)
NAME
rarpd - Reverse Address Resolution Protocol (RARP) daemon
SYNOPSIS
rarpd [-aAvde] [-b bootdir ] [ interface ]
DESCRIPTION
Rarpd is a daemon which responds to RARP requests. RARP is used by some machines at boot time to discover their IP address. They provide
their Ethernet address and rarpd responds with their IP address if it finds it in the ethers database (either /etc/ethers file or NIS+
lookup) and using DNS lookup if ethers database contains a hostname and not an IP address. By default rarpd also checks if a bootable
image with a name starting with the IP address in hexadecimal uppercase letters is present in the TFTP boot directory (usually /tftpboot )
before it decides to respond to the RARP request.
OPTIONS
-a Do not bind to the interface.
-A Respond to ARP as well as RARP requests.
-v Tell the user what is going on by being verbose.
-d Debugging mode. Do not detach from the tty.
-e Skip the check for bootable image in the TFTP boot directory. If not present, then even if the Ethernet address is present in the
ethers database but the bootable image for the resolved IP does not exist, rarpd will not respond to the request.
-b bootdir
Use bootdir instead of the default /tftpboot as the TFTP boot directory for bootable image checks.
OBSOLETES
This rarpd obsoletes kernel rarp daemon present in Linux kernels up to 2.2 which was controlled by the rarp(8) command.
FILES
/etc/ethers,
/etc/nsswitch.conf,
/tftpboot
SEE ALSO
ethers(5)
AUTHORS
Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
Jakub Jelinek, <jakub@redhat.com>
rarpd 7 April 2000 RARP(8)