Hi, ----- 2016. júl.. 14., 10:09, Yedidyah Bar David [email protected] írta:
> On Thu, Jul 14, 2016 at 10:38 AM, Demeter Tibor <[email protected]> wrote: >> >> Dear members! >> >> We have an ovirt cluster that based on el6 and 3.5.6 >> It is contain three nodes, but the first node is an all-in-one installation. >> I would like to upgrade the whole system to 4.0. Also I would like to switch >> to hosted engine modell. > > Sounds like a combination of: > > [1] > http://www.ovirt.org/develop/developer-guide/engine/migrate-to-hosted-engine/ > [2] https://www.ovirt.org/documentation/how-to/hosted-engine-host-OS-upgrade/ > [3] > https://www.ovirt.org/documentation/how-to/hosted-engine/#upgrade-hosted-engine > >> Now, we bought new servers for the migration. > > "For the migration", meaning you intend to eventually migrate to them? > And decommission the existing ones? :) No, it was an old plan. So we bought them because we want to switch to ultra-dense multipurpose servers from individual servers. > > Also, I assume you want el7 on all hosts eventually. > > Storage remains as-is? The storage is NFS based storgae. > > How important is no downtime for the VMs? We could makes downtime if that needed. > >> >> What is the good way to migrate nodes, etc? > > Something like: > 1. Create new storage space for the hosted-engine > 2. Install el7 on one of the new hosts, NH1 > 3. deploy hosted-engine on NH1 Have I add the old IP to this engine? Because it same with the node. Also, I would like to switch to VLANs with the migration, if possible. I don't know when I need to make this, after or under the migration process.. > Follow [1]: > - backup existing engine and stop/disable engine there > - restore backup on the engine vm (after you install engine, > but do not engine-setup) > - engine-setup > - When 'hosted-engine --deploy' will try to add the host to > the engine, it might fail, because it will add it to Default > cluster, which has el6 hosts. Check [2] about this - create > new cluster and add there. > - All of the above in 3.5. How can I install 3.5 and not 4.0 from repositories? > 4. Perhaps add the other new hosts, perhaps as hosted-engine > hosts - if you want HA for the engine vm > 5. Migrate all VMs to the new cluster. > 6. Delete old hosts > 7. Upgrade to 3.6 - check [2] > 8. Upgrade to 4.0 - should be normal procedure [3] > > I recommend testing this on test systems prior to prod. > You can use nested kvm for this. > > Best, > -- > Didi Thank you Tibor _______________________________________________ Users mailing list [email protected] http://lists.ovirt.org/mailman/listinfo/users
