Open Stack

Any comments on these questions ?
Thanks, Massimo

On Fri, Dec 2, 2022 at 5:02 PM Massimo Sgaravatto <
massimo.sgaravatto at gmail.com> wrote:

> Dear all
>
>
>
> Dear all
>
> We are now running an OpenStack deployment: Yoga on CentOS8Stream.
>
> We are now thinking about a possible migration to Ubuntu for several
> reasons in particular:
>
> a- 5 years support for both the Operating System and OpenStack
> (considering LTS releases)
> b- Possibility do do a clean update between two Ubuntu LTS releases
> c- Easier procedure (also because of b) for fast forward updates (this is
> what we use to do)
>
> Considering the latter item, my understanding is that an update from
> Ubuntu 20.04 Ussuri to Ubuntu 22.04 Yoga could be done in the following
> way (we have two controller nodes and n compute nodes):
>
> - Update of first controller node from Ubuntu 20.04 Ussuri to Ubuntu 20.04
> Victoria (update OpenStack packages + dbsync)
> - Update of first controller node from Ubuntu 20.04 Victoria to Ubuntu
> 20.04 Wallaby (update OpenStack packages + dbsync)
> - Update of first controller node from Ubuntu 20.04 Wallaby to Ubuntu
> 20.04 Xena (update OpenStack packages + dbsync)
> - Update of first controller node from Ubuntu 20.04 Xena to Ubuntu 20.04
> Yoga (update OpenStack packages + dbsync)
> - Update of first controller node from Ubuntu 20.04 Yoga to Ubuntu 22.04
> Yoga (update Ubuntu  packages)
> - Update of second controller node from Ubuntu 20.04 Ussuri to Ubuntu
> 22.04 Yoga (update OpenStack and Ubuntu packages)
> - Update of the compute nodes from Ubuntu 20.04 Ussuri to Ubuntu 22.04
> Yoga (update OpenStack and Ubuntu packages)
>
>
> We would do the same when migrating from Ubuntu 22.04 Yoga to Ubuntu 24.04
> and the OpenStack xyz release (where xyz
> is the LTS release used in Ubuntu 24.04)
>
> Is this supposed to work or am I missing something ?
>
> If we decide to migrate to Ubuntu, the first step would be the
> reinstallation with Ubuntu 22.04/Yoga of each node
> currently running CentOS8 stream/Yoga.
> I suppose there are no problems having in the same OpenStack installation
> nodes running the same
> Openstack version but different operating systems, or am I wrong ?
>
> Thanks, Massimo
>
>
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