Affinity Policy¶
The affinity policy is designed for senlin to leverage the server group API in nova. Using this policy, you can specify whether the nodes in a cluster should be collocated on the same physical machine (aka. “affinity”) or they should be spread onto as many physical machines as possible (aka. “anti-affinity”).
Currently, this policy can be used on nova server clusters only.
Properties¶
The affinity policy has the following properties:
servergroup.name: An optional string that will be used as the name of server group to be created.servergroup.policies: A string indicating the policy to be used for the server group.availability_zone: Optional string specifying the availability zone for the nodes to launch from.enable_drs_extension: A boolean indicating whether VMware vSphere extension should be enabled.
Since the os.nova.server profile type may contain scheduler_hints
which has server group specified, the affinity policy will behave differently
based on different settings.
<TBC>
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