I think maybe there's a typo there, you mean to say a 4.1 agent can't
communicate to a 4.2 mgmt server, and vice versa?

The systemvm problem, do you mean that the system vms need to be
upgraded, or are you talking about a specific bug?

On Tue, Jul 23, 2013 at 10:00 AM, Wido den Hollander <w...@widodh.nl> wrote:
> Hi,
>
> Yesterday I encountered this bug:
> https://issues.apache.org/jira/browse/CLOUDSTACK-3714
>
> A short summary: A 4.2 agent can't communicate with a 4.2 management server
> and vise versa.
>
> What this means is that during an upgrade you can't upgrade the Agents one
> by one, since a upgraded Agent won't be able to participate in the cluster.
>
> This is a big breaker for me, since going from 4.1 to 4.2 and having to shut
> down your management server and all your Agents at once seems like a major
> upgrade to me.
>
> I also encountered the problems with the new SystemVMs today while upgrading
> my management server to 4.2 and it seems to me that this upgrade won't be an
> easy one for a lot of users.
>
> So I'd like to start a discussing about this, since I'm almost thinking that
> 4.2 should become 5.0 because of the major changes.
>
> These major changes are good and they bring a lot of functionality to
> CloudStack, but sometimes it seems like stuff is coming in so fast that it's
> almost impossible to keep up with.
>
> How do other people think about this API change between 4.1 and 4.2?
>
> Do you also think that 4.2 should actually be called 5.0?
>
> Wido

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