[Openstack] "nova zone" and "availability_zone"

Tim Bell Tim.Bell at cern.ch
Tue Mar 20 11:21:16 UTC 2012


 

It would be useful if there was a glossary of terms related to Openstack. It
is easy to get confused as many words are overloaded or slightly different
between different parts of Openstack.

 

There is also the page on identity at
<http://docs.openstack.org/diablo/openstack-identity/admin/content/Identity-
Service-Concepts-e1362.html>
http://docs.openstack.org/diablo/openstack-identity/admin/content/Identity-S
ervice-Concepts-e1362.html which defines some concepts.

 

>From  <http://wiki.openstack.org/Glossary>
http://wiki.openstack.org/Glossary, there is a pointer to
<http://cloudglossary.com/> http://cloudglossary.com/ but the openstack
terms are not in there.

 

There is also
<http://docs.openstack.org/incubation/openstack-network/developer/quantum-ap
i-1.0/content/Glossary.html>
http://docs.openstack.org/incubation/openstack-network/developer/quantum-api
-1.0/content/Glossary.html for networking.

 

Tim

 

From: openstack-bounces+tim.bell=cern.ch at lists.launchpad.net
[mailto:openstack-bounces+tim.bell=cern.ch at lists.launchpad.net] On Behalf Of
Sandy Walsh
Sent: 20 March 2012 12:07
To: Nicolae Paladi; openstack at lists.launchpad.net
Subject: Re: [Openstack] "nova zone" and "availability_zone"

 

Availability Zone is an EC2 concept. Zones were a sharding scheme for Nova.
Zones are being renamed to Cells to avoid further confusion. Availability
Zones will remain the same. 

 

Hope it helps!

-S

  _____  

From: openstack-bounces+sandy.walsh=rackspace.com at lists.launchpad.net
[openstack-bounces+sandy.walsh=rackspace.com at lists.launchpad.net] on behalf
of Nicolae Paladi [n.paladi at gmail.com]
Sent: Tuesday, March 20, 2012 6:55 AM
To: openstack at lists.launchpad.net
Subject: [Openstack] "nova zone" and "availability_zone"

Hi all,  

 

What is the difference between "nova zone(s)" and "availability_zone"?

In a new deployment, the *services* table in the nova db contains an
"availability_zone"

column (which is 'nova', but default). 

 

If that is not the same as "nova zones"  (which are logical deployments, as
far as I understood), where is information

about zones stored?

 

The only documentation about "zones" in openstack that I could find is here:

http://nova.openstack.org/devref/zone.html

 

 

is there anything on availability zones?

 

Cheers, 

/Nicolae.

 

 

 

 

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