Re: [Rdo-list] OpenStack upgrade Icehouse Centos 6 best practice

Hello, Here some more insights and questions: We have in total 4 separate clouds who need the upgrade with each more than 100 compute nodes. We just use the basic services like nova, keystone, neutron, glance and horizon. No Cinder, heat, trove etc. Our network setup is flat provider network, which means we don't use the neutron router. All in all the from the openstack service perspective a minimal setup. One of our cloud is set up as HA with two management nodes (keystone, nova, horizon, glance) behind a haproxy. It's not a big deal to have the same setup implemented in all clouds if it's helpful for the upgrade We don't think about upgrading from Centos 6 to 7. Instead build new Centos 7 compute nodes and move the VMs with live migration (is it a good idea?) The database schemes changes between the openstack versions, what does it affect? Let's say we set up a second management node wit Centos 7 and the openstack Juno/Kilo services will it work against the Centos 6/Icehouse compute nodes and the Icehouse DB schema? Cheers, Chris -----Original Message----- From: rdo-list-bounces(a)redhat.com [mailto:rdo-list-bounces@redhat.com] On Behalf Of Ihar Hrachyshka Sent: Monday, August 17, 2015 18:18 To: rdo-list(a)redhat.com Subject: Re: [Rdo-list] OpenStack upgrade Icehouse Centos 6 best practice -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On 08/17/2015 12:54 PM, Chris wrote: That's a huge shift for one step! I suggest you split the OS and Openstack upgrades into separate phases to simplify the job. I also don't think upstream supports upgrades that skip a release or two. It may work, but that's not guaranteed. The usual assumption is that we support backwards compatibility for one release, so you can stage your upgrades. Note that you should first upgrade controller services, then agents/computes, not vice versa. _______________________________________________ Rdo-list mailing list Rdo-list(a)redhat.com https://www.redhat.com/mailman/listinfo/rdo-list To unsubscribe: rdo-list-unsubscribe(a)redhat.com