OpenStack Compute (nova)

OS API format of blob

Asked by Tushar Patil

I am trying to setup zone_aware_scheduler to test launching of server on specific host. But I didn't find the format of blob that I should be passing to the Create Server API.

Does anyone knows the format of blob?

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Ed Leafe (ed-leafe) said : 		#1

The blob is simply the encrypted results of the results of a zone's select() call to get and weight hosts available for a new instance. The decrypted blob is simply a list of dictionaries of form: [{weight: weight, hostname: hostname, capabilities: capabs}]

Take a look at the _scrub_build_plan() method of nova/api/openstack/zones.py to see where the encryption is handled.

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Sandy Walsh (sandy-walsh) said : 		#2

More info here on Zones and Distributed Scheduler

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

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Tushar Patil (tpatil) said : 		#3

Thanks Ed Leafe and Sandy Walsh.

http://nova.openstack.org/devref/ explains everything. Nice documentation.