Hi Tim, Thank you for the information! We'll try it out.
Edwin On Mon, Sep 15, 2014 at 10:25 AM, Tim Bell <[email protected]> wrote: > > > There were some studies done by INFN into how this could work. See > http://indico.cern.ch/event/272791/session/0/contribution/6/material/slides/1.pdf > for a description. Two approaches, with a modified scheduler or potentially > a blazar lease type. > > > > This is a particular challenge in the research and HPC private clouds > where high levels of utilisation are very typical. > > > > Tim > > > > *From:* Digital Wonk [mailto:[email protected]] > *Sent:* 15 September 2014 19:13 > *To:* [email protected] > *Subject:* [Openstack-operators] Questions about waitlisting/queuing > provisioning requests due to capacity > > > > Hi All, > > > > Hopefully, this is the appropriate group to post these questions. My > organization operates a public cloud which is always at capacity due to the > demand, and we're looking at OpenStack approaches to handle the capacity > issue. > > - What successful strategies have other groups used to deal with > highly utilized clouds? Obviously, increasing a monetary price for > resources is one approach, but barring that, what are other methods? > - Are there any existing schedulers, extensions, openstack projects, > or any forthcoming blueprints that provide the ability to wait list or > queue a request if resources are at capacity until resources are available > to satisfy that request. I'm particularly interested in nova. > - Are there any commercial products that provide this wait list or > queuing functionality? > > I came across Blazar, and it (and the notion of reservations) are > somewhat related to waitlists but not precisely: > > > > https://wiki.openstack.org/wiki/Blazar > > > > One particular statement for delayed or scheduled reservations that > suggests a mismatch for wait lists or queues is: > > > > "In this reservation type lease is created successfully if Blazar thinks > there will be enough resources to process provisioning later (otherwise > this request returns failure status)" > > > > What if the cloud is always full? > > > > Thanks in advance for the responses. > > > > Edwin > > > > >
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