[CentOS-virt] Centos 6.9 AWS Images and c4-8xlarge

Wed Apr 12 01:35:40 UTC 2017
Henry Finucane <h.finucane at gmail.com>

On Tue, Apr 11, 2017, 6:25 PM Karanbir Singh <mail-lists at karan.org> wrote:

> On 05/04/17 14:56, John Peacock wrote:
> >
> > We want to be able to usethe 10G networking that c4.8xlarge instances
> > provide and we want to base all of our images directly on the official
> > Centos6 release AMI.
> >
> Can you try  ami-500d8546 i us-east-1 and let me know if that works for
> the c4.8large ?
> I've asked, a few times, for the CentOS Linux images in AMP to be
> enabled for all instance types where the image will work. So if its not
> being enabled, there is a chance the image isnt suitable, and we should
> find out why.

My recollection is that the official AMI still ships kernel -431, which
breaks during boot on large systems with multiple NUMA nodes, like
c4.8xlarges. This kernel is extremely old, and 'yum update' is enough to
make everything work.

That used to be enough, and you could build an up to date AMI on top of the
official one, but since they added the marketplace blacklist you need to
roll your own AMI from scratch.

> --
> Karanbir Singh
> +44-207-0999389 | http://www.karan.org/ | twitter.com/kbsingh
> GnuPG Key : http://www.karan.org/publickey.asc
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