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Re: [DISCUSS] deployment planner improvement


If I remember correctly, we see similar issues on VMware.  Marcus, have you
seen similar behavior on VMware?  I think I remember us having to manually
vMotion a lot of VMs very often...

*Will Stevens*
Chief Technology Officer
c 514.826.0190

<https://goo.gl/NYZ8KK>


On Thu, Sep 6, 2018 at 2:34 PM Pierre-Luc Dion <pdion@xxxxxxxxxxxx> wrote:

> Hi,
>
> I'm working with a University in Montreal and we are looking at working
> together to improve the deployment planner. Mainly for post VM.CREATE
> tasks.
> Because  what we observed with cloudstack, in our case with XenServer,
> overtime, a cluster will become unbalanced in therm of workload, vm HA will
> move VMs all over the the cluster which cause hotspot inside a cluster.
> Also, when performing maintenance  xenmotion of VM spread them in the
> cluster but does not consider host usage and at the end of a maintenance it
> require manual operation to repopulate VMs on the last host updated.  OS
> preference not taken into account  except for VM.CREATE.
>
> So,
> I'd like to work on improving VMs dispersion during and post outage and
> maintenances. when a cluster resources are added or removed.
>
> Would you have any more requirement, we will document a feature spec in the
> wiki which I believe it's still a requirement ?
>
> Does using KVM have similar issues over time?
>
> I don't think it would make sense to cloudstack to automatically take
> decision on moving VMs but for now create report of recommended action to
> do and provide steps to do them. tbd.
>
> Cheers,
>
> PL
>