[Openstack-operators] [nova] [openstack-operators] Tools to move instances between projects?

Kris G. Lindgren klindgren at godaddy.com
Wed Dec 2 23:43:13 UTC 2015

I can describe our specific uses cases, not sure our same limitations apply to everyone.

Every developer in our company has a project created for them (user-username) they are allowed to spinup 5 vm's in this project to do dev/test/POC whatever.  These projects are not tied into show back or usage that is done internally for orgs.  It's simply done to allow any dev to have immediate access to servers so that they cant test out ideas/try something ect ect.  Actual applications/teams create projects.  Resources used in these projects are done as show back model to allow us to move fake money around to help purchase capacity for the cloud.  We are moving to a lease model for for user- projects, where we we automatically, unless action is taken by the user, reclaiming those resources after x number of days.  Additionally, every so often we cleanup projects that are tied to users that are no longer with the company.  It's during these actions that we usually find people asking if we can transfer vm's from one project to another project.  Only the employee has access to their user-<employee> project within openstack.

For us - we don't allow snapshots in our private cloud.  We encourage all of our devs to be able to rebuild any vm that is running in cloud at any time.  Which is the line we have been toting for these requests.  However, we would still like to be able to support their requests.  Additionally, all of our vm's are joined to a domain (both linux and windows), taking a snapshot of the server and trying to spin it up a replacement is problematic with servers joined to the domain - specifically windows.  It also doesn't take care of floating ip's or applied security group rules, volumes that are mapped ect ect.

Taking a snapshot of the vm, making it public, booting another vm from that snapshot, deleting the old vm and the snapshot is pretty heavy handed... when we really just need to update in nova with which project the vm falls under.

We have also had people who didn't pay attention to which project they created vm's under and asked us later if we could move the vm from tenant x to tenant y.

We try to have cattle, but people, apparently, really like cows as pets.

Kris Lindgren
Senior Linux Systems Engineer

On 12/2/15, 3:50 PM, "Matt Riedemann" <mriedem at linux.vnet.ibm.com> wrote:

>On 12/2/2015 2:52 PM, Kris G. Lindgren wrote:
>> Hello,
>> I was wondering if someone has a set of tools/code to work allow admins
>> to move vm's from one tenant to another?  We get asked this fairly
>> frequently in our internal cloud (atleast once a week, more when we
>> start going through and cleaning up resources for people who are no
>> longer with the company).   I have searched and I was able to find
>> anything externally.
>> Matt Riedemann pointed me to an older spec for nova :
>> https://review.openstack.org/#/c/105367/ for nova.  I realize that this
>> will most likely need to be a cross projects effort.  Since vm's consume
>> resources for multiple other projects, and to move a VM between projects
>> would also require that those other resources get updated as well.
>> Is anyone aware of a cross project spec to handle this – or of specs in
>> other projects?
>> ___________________________________________________________________
>> Kris Lindgren
>> Senior Linux Systems Engineer
>> GoDaddy
>> _______________________________________________
>> OpenStack-operators mailing list
>> OpenStack-operators at lists.openstack.org
>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
>I think we need a good understanding of what the use case is first. I 
>have to assume that these are pets and that's why we can't just snapshot 
>an instance and then the new user/project can boot an instance from that.
>Quotas are going to be a big issue here I'd think, along with any 
>orchestration that nova would need to do with other services like 
>cinder/glance/neutron to transfer ownership of volumes or network 
>resources (ports), and those projects also have their own quota frameworks.
>Matt Riedemann
>OpenStack-operators mailing list
>OpenStack-operators at lists.openstack.org

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