[ovirt-users] compatibility relationship between datacenter, ovirt and cluster
Itamar Heim
iheim at redhat.com
Sat Apr 12 20:09:19 UTC 2014
On 04/11/2014 10:35 PM, Tamer Lima wrote:
> ok, Itamar, thanks.
>
> now I can understand how the things work.
>
> but I have a question based on the fact that I have ovirt-engine on
> version 3.4 and DC and Cluster both are configured on version 3.3 :
>
> - This means that I have "available" features on version 3.4 , but these
> features just will work when I update DC and Cluster to version 3.4
> ? (this is what I understand, following Dafna Ron response)
>
> so, to really obtain the benefits of the new version (3.4) I need to
> run the commands (yum update ovirt-engine-setup, engine-setup) and also
> increase the version of compatibility within the datacenter, cluster and
> host to the version 3.4
>
>
> - and what I have if only update ovirt-engine to version 3.4 and not
> update dc, cluster neither hosts.
> I realized changes on ovirt web admin interface, improvements on icons
> and maybe new fields.
>
some features in the engine do not require anything from
hosts/cluster/DC, so you get them without upgrading the hosts/clusters/dc's.
for features that require an upgraded host/cluster/dc, you will only get
them when you upgrade them accordingly.
(if you upgrade a cluster, features which are not DC level, will start
being available post cluster upgrade, etc.)
>
>
> On Fri, Apr 11, 2014 at 9:56 AM, Itamar Heim <iheim at redhat.com
> <mailto:iheim at redhat.com>> wrote:
>
> On 04/10/2014 10:50 PM, Tamer Lima wrote:
>
> Hi,
>
>
> yesterday my ovirt was 3.3
> my datacenter and cluster (compatibility version) was aligned
> with ovirt
> 3.3
>
>
> today my ovirt is now 3.4.
> and my datacenter and cluster (compatibility version) remains
> 3.3 (with
> the option enabled to change for 3.4)
>
> browsing the ovirt admin page I see 2 occurrences of ovirt version:
> datacenter tab = 3.3
> cluster tab =3.3
>
>
>
> I would like to understand what means all these versions, the same
> version for a lot of important things, and how my ovirt
> works/behaves
> using different versions.
>
> all my doubts together :
> What means datacenter in version 3.3(or lower version) when
> ovirt is 3.4 ?
> what means cluster in version 3.3 when ovirt is 3.4?
> what means change the "compatibility version" for datacenter?
> what means change the "compatibility version" for cluster?
>
>
> Gianluca replied with links for specific features.
> I'll reply on the general concept:
> - a host can be upgraded to a specific 3.x version. it can be in any
> 3.y cluster which is <= 3.x
> once the host is upgraded, 3.x host-level features can be used
> - a cluster can be upgraded to 3.x once all active hosts in it are at
> least with 3.x.
> once the cluster is upgraded, 3.x cluster-level features can be used
> - a data cetner can be upgaeded to 3.x once all clusters in it are at
> least with 3.x
> once the DC is upgraded, 3.x DC-level features can be used
>
> i don't think we have it clearly documented per feture if it is host
> level, cluster level or DC level. when in doubt, ask...
>
>
>
>
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