Open Stack

On Thu, 2019-09-05 at 15:10 +0000, Adrian Chiris wrote:
> Greetings,
> I was wondering what is the guideline in regards to which kernels are supported by OpenStack in the various Linux
> distributions.
> 
> Looking at [1], Taking for example latest CentOS major (7):
> Every  "minor" version is released with a different kernel version,
> the oldest being released in 2014 (CentOS 7.0, kernel 3.10.0-123) and the newest released in 2018 (CentOS 7.6, kernel
> 3.10.0-957)
for what its worth once centos8 is out which should be soonish i hope that will not be an issue so in Ussuri the bug can
be fixed without regard for ceten 7 at least on master.
> 
> While I understand that OpenStack projects are expected to support all CentOS 7.x releases.

am i actully dont know if its resonable to expect all centos 7.x version to be supported.

downstream we do not support OSP on all Rhel 7 version for all release.
after a certen point to recive new zstream ream version of OSP you need to move to a later rhel release.
if you continue to run the old x.y.z version on older rhel its supported but the latest .z is only tested/supported
on the latest rhel 7.x 

expecting all openstack project to support the kernel form 7.0 is probably an unrealistic requirement.
if so it would meen 10 years of support for that kernel or well untill we eol it. we dont test with
old kernel in the gate as far as i know but i also dont know if we have a policy for this.


> Does the same applies for the kernels they originally came out with?
> 
> The reason I'm asking, is because I was working on doing some cleanup in neutron [2] for a workaround introduced
> because of an old kernel bug,
> It is unclear to me if it is safe to introduce this change.
> 
> [1] https://governance.openstack.org/tc/reference/project-testing-interface.html#linux-distributions
> [2] https://review.opendev.org/#/c/677095/
> 
> Thanks,
>     Adrian.
>