diskless nodes with scyld

Todd Henderson Todd_Henderson at readwo.com
Thu Feb 1 14:28:46 EST 2001


What is the oldest Intel that the Scyld will install and run on?  I have a couple of old 486's at home I was
thinking about playing around with?

Thanks,
Todd

Daniel Ridge wrote:

> On Thu, 1 Feb 2001 valentin at olagrande.net wrote:
>
> > I am trying to set up a diskless cluster using the Scyld CD-ROM. Althought
> > previous articles in the archive suggest that this is possible, I have found
> > no instruction anywhere on how to do this.
>
> We have an updated CD out now (see our website) that runs disklessly
> by default (based on popular demand).
>
> > >From an article in the December archives, I assumed that all I need to do
> > is change the /etc/beowulf/fstab file. Mine currently has the following
> > entries:
> >
> > /dev/ram3     /               ext2    fs_size=65536   0 0
> > none          /proc           proc    defaults        0 0
> > none          /dev/pts        devpts  gid=5,mode=620  0 0
> > $MASTER:/home /home           nfs     defaults        0 0
>
> That looks right.
>
> > This fails, and I have trouble interpreting the error log attached at the
> > end of this message. Now, who can help me?
>
> > 1. What are the instructions for booting a diskless node with Scyld?
>
> Comment out the /home mount in your fstab. Your nodes are having NFS
> problems that are keeping them from coming up. (the node NFS fs module is
> failing to load for some reason).
>
> > 2. Is it possible to boot a diskless node without a Scyld floppy or CD-ROM?
> >    My nodes send out DHCP requests. Can I simply setup a dchp server to
> >    hand out /var/beowulf/. Will dhcpd conflict with beoserv over ports?
>
> Basically no problem. I'll whip up some instructions for people who want
> to PXE boot their boxes. With the latest Scyld release, you basically do:
> beoboot -2 -i to make phase-2 images with the kernel and initrd split out
> so that you can use them with any boot strategy you choose.
>
> Regards,
>         Dan Ridge
>         Scyld Computing Corporation
>
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