[Users] Is it possible to run the node and engine on the same box?

[Doron Fediuck]

On 19/02/12 15:33, Brent Bolin wrote:
> Assume if it was possible fedora 16 with the additional repos would be
> suggested.

Hi Brent,
ovirt-node is read-only by nature (with the exception of some configurations).
This means you cannot simply install rpm's on it. Instead both vdsm and the
engine core needs to be pre-built on the node. This is not trivial, as the
engine core requires many packages.

If we assume you're using standard Fedora to be able to install rpm's, then
we come to the next set of issues; co-hosting engine core with vdsm. There
are things that need to be taken care of such as-
- Adding the same host as a new host into the engine will cause reboot, which
is not a good thing to do to the engine core during the installation process
of the host..
- Fencing.... the co-hosted machine should not be fenced under any circumstances,
in order to protect the engine core.
- Networking... networking changes may impact the engine core as well. So here again
we need to be careful.

To conclude,
it is possible to create a co-hosted machine used both by vdsm and engine-core.
However, we need to verify the machine is not being rebooted. There are thoughts
and maybe some work on achieving it, but it will take some time.
-- 

/d

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