Hi All, I have a use case that I need to apply some filter (Custom traits) while Placement API fetch the resource providers for launching instance. So that I can have list of resource provided which meets my condition/filter/validation. The validation is nothing but trust about the Host(compute node) where I am going to launch the instances. The below link says that it is possible, don't have idea how to implement/test this scenario. https://specs.openstack.org/openstack/nova-specs/specs/ocata/implemented/resource-providers-scheduler-db-filters.html we would rather make a HTTP call to the placement API on a specific REST resource with a request that would return the list of resource providers' UUIDs that would match requested resources and traits criterias based on the original RequestSpec object. Thanks & Regards, Mohan Ramu -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20171116/53f389f8/attachment.html>