[Openstack] how to use extra_specs??

Mauch, Viktor (SCC) mauch at kit.edu
Tue Nov 6 10:46:52 UTC 2012


Or being more specific,

 

How can a add key/value pairs to a compute node??? 

So I can check the extra_specs data with the key/value paris of the compute
node?

 

Cheers Viktor

 

From: openstack-bounces+mauch=kit.edu at lists.launchpad.net
[mailto:openstack-bounces+mauch=kit.edu at lists.launchpad.net] On Behalf Of
Mauch, Viktor (SCC)
Sent: Tuesday, November 06, 2012 11:37 AM
To: openstack at lists.launchpad.net
Subject: Re: [Openstack] how to use extra_specs??

 

Just one more noob question.

 

Is it normal that If I  set a set key/value pair let's say
{"my_special_key":"my_special_value"} to an existing flavor, that the
scheduler failed to find a host for an instance of this flavor.

 

(I use devstack with folsom stable code)

 

Cheers Viktor

 

 

From: Vinay Bannai [mailto:vbannai at gmail.com] 
Sent: Tuesday, November 06, 2012 5:09 AM
To: Mauch, Viktor (SCC)
Cc: openstack at lists.launchpad.net
Subject: Re: [Openstack] how to use extra_specs??

 

The simplest way would be to create key/value pairs for flavor types
(instance types). 

This information would be associated in a separate table in nova db
(instance_type_extra_specs) and would go along with the instance type. 

 

Once it is in the database, you can use this information to customize all
kinds of things like the nova scheduler, additional data that can be passed
to the instance at the time of the creation. This is the high level
overview. If you search the mailing list archives you will find some
additional discussion about this topic. 

 

Vinay

On Mon, Nov 5, 2012 at 5:57 PM, Mauch, Viktor (SCC) <mauch at kit.edu> wrote:

Hi guys,

 

can anyone tell me (with an example) how to use the extra_specs variable for
an instance_type??

 

Best Regards

 

Viktor


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Vinay Bannai
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