Open Stack

Going back to the idea of archiving images and not allowing launch of new
VMs and hiding archived images by default in Horizon/CLI (maybe still can
list/show if requested, possibly admin function only). Would it make sense
to propose this as a blueprint for the next release?

Best regards,
Igor

On Thu, Feb 5, 2015 at 5:34 AM, Tim Bell <Tim.Bell at cern.ch> wrote:

> > -----Original Message-----
> > From: George Shuklin [mailto:george.shuklin at gmail.com]
> > Sent: 05 February 2015 14:10
> > To: openstack-operators at lists.openstack.org
> > Subject: [Openstack-operators] How to handle updates of public images?
> >
> > Hello everyone.
> >
> > We are updating our public images regularly (to provide them to
> customers in
> > up-to-date state). But there is a problem: If some instance starts from
> image it
> > becomes 'used'. That means:
> > * That image is used as _base for nova
> > * If instance is reverted this image is used to recreate instance's disk
> > * If instance is rescued this image is used as rescue base
> > * It is redownloaded during resize/migration (on a new compute node)
> >
> > One more (our specific):
> > We're using raw disks with _base on slow SATA drives (in comparison to
> fast SSD
> > for disks), and if that SATA fails, we replace it (and nova redownloads
> stuff in
> > _base).
> >
> > If image is deleted, it causes problems with nova (nova can't download
> _base).
> >
> > The second part of the problem: glance disallows to update image (upload
> new
> > image with same ID), so we're forced to upload updated image with new ID
> and
> > to remove the old one. This causes problems described above.
> > And if tenant boots from own snapshot and removes snapshot without
> removing
> > instance, it causes same problem even without our activity.
> >
> > How do you handle public image updates in your case?
> >
>
> We have a similar problem. For the Horizon based end users, we've defined
> a panel using image meta data. Details are at
> http://openstack-in-production.blogspot.ch/2015/02/choosing-right-image.html
> .
>
> For the CLI users, we propose to use the sort options from Glance to find
> the latest image of a particular OS.
>
> It would be good if there was a way of marking an image as hidden so that
> it can still be used for snapshots/migration but would not be shown in
> image list operations.
>
> > Thanks!
> >
> > _______________________________________________
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> > OpenStack-operators at lists.openstack.org
> > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
>
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>



-- 
Best regards,
Igor
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