FreeBSD diskless workstation boot over Linux PXE server
new2xen at gmail.com
Tue Mar 4 00:41:39 UTC 2008
Thank you for the input from a couple of folks. After a few research
and readings I am able to boot off a diskless client; and have a
little error encountered. To clarify the environment:
1. PXE/DHCP/NFS/TFTP servers is a linux host
2. DHCP - server - dhcpd.conf file shows the following: (for my
freeBSD diskless client testing scenario)
option root-path "192.168.16.5:/export/images/freeBSD";
-- pxeboot is the freeBSD /boot/pxeboot file I copied over to my
-- next server IP is the PXE/TFTPD/DHCP server ...
-- the NFS root is exported by the NFS server as such.
.... The client seems to boot properly - acquires an IP address;
downloads and reads the /tftpboot/pxeboot file; .... a message also
appears that indicates it mounted the root File system: (snippet of
NFS ROOT: 192.168.16.5:/export/images/freeBSD
nfe0: link state change to UP
Interface nfe0 IP_Address 192.168.16.5 ... . . . . ..
Loading Configuration files.
rc.conf: not found
No Suitable dump device was found .
IT seems like the root is mounted but it cannot find the rc.conf file;
my root contains the following directories (including
<nfsroot>/etc/rc.conf and <nfsroot>/etc/defaults/rc.conf ...
bin boot dev etc home lib libexec sbin swap tmp usr var
I must be missing something silly or apparent. Any help and/or
suggestions would be greatly appreciated. I have attempted to
painstakingly google this issue, to no avail.
thanks in advanced.
On Sat, Feb 23, 2008 at 2:45 AM, Erik Norgaard <norgaard at locolomo.org> wrote:
> vincenzo romero wrote:
> > Hello,
> > Am new to FreeBSD and relatively new to linux; I have a CentOS 5.1
> > PXE/tftpd/dhcpd server; I'd like it to be the build/PXE server where a
> > bunch of 1U clients could PXE boot and run:
> > 1. diskless over NFS-Root
> > In googling, seems like there is a clone script that preps and lets
> > you generate a root file system structure and let your clients boot
> > off the network.
> I found the docs I could find on the internet way obsolete back in 2005
> when I played with it, and I am not aware that these has been updated.
> I wrote my own guide to make up for this, however, this may now also be
> obsolete as it's been some time since I played with this.
> My main problem with diskless is that FreeBSD mounts memory backed
> filesystems for /var and /tmp which waste a lot of precious RAM if you
> have restricted memory. And a feature, useless in diskless operation,
> prevents mounting /var and /tmp from a server.
> > I checked the Free BSD Handbook (Chapter 29) where extensive
> > documentation on setup is outlined, but it assumes that the
> > PXE/TFTP/NFS/DHCPd servers are FreeBSD; mine is a CentOS; just want
> > to support diskless PXE boot for my clients.
> > Section 18.104.22.168.2 9Usning a Non-FreeBSD server - just indicates that
> > do a tar/cpio of root; but ensure that special files in /dev are taken
> > care of ...
> There is no problem serving files from a non-FreeBSD server, however
> things are easier, as you need to build all applications served via NFS
> for FreeBSD. This mainly affects you if you want diskless clients, you
> need to keep these updated. For installation this is not a concern.
> The /dev is not a problem, the diskless client mounts a /dev locally, it
> is not a real file system.
> > - does anyone have this type of scenario setup? if so, can you please
> > share with me your insights/cheat-sheet-how to?
> > - i'd be interested in understanding the setup of how you handled
> > copying the /dev files into your exported ROOT directorty ...
> > Are there any other recommendations ?
> If you want to do network installation rather than diskless, avoid NFS,
> it is much easier to set up installation over ftp.
> Cheers, Erik
> Erik Nørgaard
> Ph: +34.666334818 http://www.locolomo.org
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