[Beowulf] SATA II - PXE+NFS - diskless compute nodes
eric-shook at uiowa.edu
Wed Dec 13 18:44:04 PST 2006
Thank you for commenting on this Greg. I might look deeper into perceus
as an option if rhel (and particularly variants as in Scientific Linux)
work well. Our infrastructure will most likely include nfs-root,
possibly hybrid and full-install. So if Perceus can support it with a
few simple VNFS capsules then that should simplify administration greatly.
Would you declare Perceus as production quality? Or would our
production infrastructure be a large-scale test? (Which I'm not sure if
I'm comfortable being a test case with our production clusters ;o)
Greg Kurtzer wrote:
> On Dec 9, 2006, at 11:27 AM, Eric Shook wrote:
>> Not to diverge this conversation, but has anyone had any experience
>> using this pxe boot / nfs model with a rhel variant? I have been
>> wanting to do a nfs root or ramdisk model for some-time but our
>> software stack requires a rhel base so Scyld and Perceus most likely
>> will not work (although I am still looking into both of them to make
> I haven't made any announcements on this list about Perceus yet, so just
> to clarify:
> Perceus (http://www.perceus.org) works very well with RHEL and we will
> soon have some VNFS capsules for the commercial distributions including
> high performance hardware and library stack and application stack
> pre-integrated into the capsule (which we will offer, support and
> certify for various solutions via Infiscale (http://www.infiscale.com).
> note: Perceus capsules contain the kernel, drivers, provisioning scripts
> and utilities to support provisioning the VNFS into a single file that
> is importable into Perceus with a single command. The released capsules
> support stateless provisioning, but there is already work in creating
> capsules that can do statefull, NFS (almost)root, and hybrid systems.
> We have a user already running Perceus with RHEL capsules in HPC and
> another prototyping it for a web cluster solution.
> Also, Warewulf has been known to scale well over 2000 nodes. Perceus
> limits have yet to be reached, but it can natively handle load balancing
> and fail over multiple Perceus masters. Theoretically the limits should
> be well beyond Warewulf's capabilities.
> Version 1.0 of Perceus has been released (GPL) and now we are in bug
> fixing and tuning mode. We are in need of testers and documentation so
> if anyone is interested please let me know.
> Greg Kurtzer
> gmk at runlevelzero.net
Eric Shook (319) 335-6714
Technical Lead, Systems and Operations - GROW
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