Il 17/01/2013 17:15, Ignacio M. Llorente ha scritto:
Dear Giovanni,
This is a very good question, which answer depends on the type and level
of collaboration that you expect across the different sites. I envision
three different architectures:
- Loosely Coupled Federation: Each site has its own OpenNebula instance
managed by its Admin team that exposes cloud APIs (OCCI/EC2) and GUIs.
In this scenario you could share a single authentication mechanism so a
user can have access to any of the clouds, or you could define a user
space for each site. You could also install your own appliance
marketplace to allow users to easily share appliances across sites.
- Tightly Coupled Federation: Each site has its own OpenNebula instance,
all of them are managed by the same Admin team, and you use the oZones
component for federation. In this case you will provide your users with
a single access point for all the zones and can allocate resources
through Virtual Data Centers to different Departments/Projects, etc.
- Hybrid Cloud Federation: Each site has its own OpenNebula instance
managed by its Admin team that exposes cloud APIs (OCCI/EC2) and GUIs. A
user can only access its primary site, and the access to remote clouds
is performed by the cloudbursting functionality of OpenNebula which is
managed by the administrator of the site, and in principle fully
transparent to the user. This would require the adaptation of the cloud
connector to support remote OpenNebula instances.
I hope this helps,
Thanks!
Thanks for your reply! Many aspects are clear now.
Nevertheless, I've a futher question regardering the vm
migration/live-migration mechanism in a Tightly Coupled Federation, that
seems to be the most suitable for our purposes.
In particular, what happens to the VMs deployed on physical nodes in a
oZones if such resources go down? Is the system able to migrate VMs to
another oZone that shares the same repository area?
Thanks again,
Giovanni
On Thu, Jan 17, 2013 at 12:00 PM, Giovanni Ponti <[email protected]
<mailto:[email protected]>> wrote:
I'm Giovanni Ponti, an ENEA researcher based in Portici Research Center.
One of my research interest is Cloud Computing, and I'm following
and organizing cloud experiences in ENEA-GRID.
We are planning to have a multi-site cloud envorinment among ENEA
computational centers (that are six). At the moment, we have
installed OpenNebula only in one site (i.e., Portici one), and we
are evaluating a further installation on another ENEA site.
My question regards the ways in which two (or more) OpenNebula
installation may communicate and/or interact to export a whole
integrated cloud enviroment. In particular, as I know that
OpenNebula provides several interfaces to export cloud facilities
and to perform remote action (e.g., OCCI), it is not particularly
clear how aspect ragardering virtual machines are handled, such as
vm migration among sites or other.
Thanks in advance for your reply(s)
Giovanni
--
Ing. Giovanni Ponti, PhD
UTICT-HPC
ENEA - C.R. Portici
P.le E. Fermi, 1 (Loc. Granatello)
80055 Portici (NA), Italy
phone : (+39) 081-7723564 <tel:%28%2B39%29%20081-7723564> | int.:
[89] 2564
fax : (+39) 081-7723344 <tel:%28%2B39%29%20081-7723344>
email : [email protected] <mailto:[email protected]>
web : http://www.afs.enea.it/gponti
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--
Ignacio M. Llorente, PhD, MBA
Project Director
OpenNebula - The Open Source Solution for Data Center Virtualization
www.OpenNebula.org <http://www.OpenNebula.org> |
[email protected] <mailto:[email protected]> | @OpenNebula
--
Ing. Giovanni Ponti, PhD
UTICT-HPC
ENEA - C.R. Portici
P.le E. Fermi, 1 (Loc. Granatello)
80055 Portici (NA), Italy
phone : (+39) 081-7723564 | int.: [89] 2564
fax : (+39) 081-7723344
email : [email protected]
web : http://www.afs.enea.it/gponti
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