[openstack-dev] [nova] Set compute_node:hypervisor_nodename as unique and not null
kanagaraj.manickam at hp.com
Wed Jun 18 18:37:02 UTC 2014
This mail is regarding the required model change in nova. Please fine more details below:
As we knew, Nova db has the table "compute_nodes" for modelling the hypervisors and its using the "hypervisor_hostname" field to represent the hypervisor name.
This value is having significant value in os-hypervisor extension api which is using this field to uniquely identify the hypervisor.
Consider the case where a given environment is having more than one hypervisors (KVM, EXS, Xen, etc) with same hostname and os-hypervisor and thereby Horizon Hypervisor panel and nova hypervisors-servers command will fail.
There is a defect (https://bugs.launchpad.net/nova/+bug/1329261) already filed on VMware VC driver to address this issue to make sure that, a unique value is generated for the VC driver's hypervisor. But its good to fix at the model level as well by making "hypervisor_hostname" field as unique always. And a bug https://bugs.launchpad.net/nova/+bug/1329299 is filed for the same.
Before fixing this bug, I would like to get the opinion from the community. Could you please help here !
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