Open Stack

On 2014-07-08 7:36 PM, Xav Paice wrote:
>
> Like many people, I'm planning our upgrade from Havana to Icehouse, and
> just want to check off a few items before taking the plunge.  So far,
> testing is going well and it doesn't look like a painful upgrade.
>
> I was wondering if, among those of us that use Ubuntu, people have been
> upgrading from Precise to Trusty along with the OpenStack upgrade or
> treating that as a separate exercise? Are people using Icehouse on
> Precise and planning to stay that way for long?
>

My plan is to upgrade to Icehouse on Precise.

Upgrading to Trusty is a separate exercise, especially when you have to 
consider the work required to upgrade compute nodes to Trusty. It will 
surely require a reboot and it can't be done without careful planning 
with the customers.

You could still juggle instances around with live migration but forget 
about upgrading to Icehouse in less than an hour. In our case, it would 
take several days.

I usually try to split maintenance in pieces as small as I can to avoid 
piling up problems and reducing variables.

-- 
Mathieu