Open Stack

Hi All,


I am new to openstack. I have a problem in understanding of Nova-database
update with the resources information.

My understanding after going through the architecture documents and code is
Nova-Database is the one which stores the resource information about the
compute servers. The Nova-Scheduler is responsible to place a VM on a
correct compute node where the resources are available. Nova-compute is
responsible for creating the VMs/Containers etc.

The question here is who actually updates the in real time the resource
information in the Nova-Database by reading the resources information from
the compute servers/nodes?

I have read about agents are responsible for this, but I dint get which
code does that. Can any one please help me in clarifying my doubt and
please guide me for the code  which does that.


Thanks in advance

Cheers,
Pradeep
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