[Beowulf] CentOS/RHEL 7 & major upgrades

Orion Poplawski orion at cora.nwra.com
Tue Feb 24 13:54:23 PST 2015

On 02/23/2015 12:40 PM, Prentice Bisbal wrote:
> On 02/20/2015 11:22 PM, Orion Poplawski wrote:
>> On 02/13/2015 01:00 AM, Olli-Pekka Lehto wrote:
>>> Hi,
>>> I’d be interested to hear if people have deployed or upgraded CentOS/EL 7
>>> on their clusters and what their experiences are? Also in the more general
>>> sense, what kind of distro upgrade philosophy do you follow? Are there a
>>> long-term roadmaps that you build internally, for example?
>>> Recently I’ve had some internal discussions about the prospect schedule of
>>> upgrading our systems from CentOS 6.x to 7. I’m not really keen on
>>> upgrading a major distro version unless there is a _really_ compelling
>>> reason to do so, especially as we have driver dependencies to Mellanox IB,
>>> Lustre, Tesla and Xeon Phi as well as a lot of ISV codes. However, it would
>>> be nice to hear what the current pain/benefit ratio of such an upgrade is.
>> One issue hindering me:
>> https://bugzilla.redhat.com/show_bug.cgi?id=1177032
>> kickstart install on machine with infiniband interfaces crashes
> First, I admit to not understanding the problem in the  bug report 100%. Is it
> possible that you could pass a kernel argument to tell it not to try to probe
> for IB interfaces, or something similar. I know this works for video cards,
> etc., when they cause an install to hang.
> Prentice

It's actually quite probable that if I didn't try to configure the ipoib
interface in kickstart the install would go fine.

Orion Poplawski
Technical Manager                     303-415-9701 x222
NWRA, Boulder/CoRA Office             FAX: 303-415-9702
3380 Mitchell Lane                       orion at nwra.com
Boulder, CO 80301                   http://www.nwra.com

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