okd/roles/openshift_master/templates/scheduler.json.j2

{
  "predicates": [
    {"name": "MatchNodeSelector"},
    {"name": "PodFitsResources"},
    {"name": "PodFitsPorts"},
    {"name": "NoDiskConflict"},
    {"name": "Region", "argument": {"serviceAffinity" : {"labels" : ["region"]}}}
  ],"priorities": [
    {"name": "LeastRequestedPriority", "weight": 1},
    {"name": "ServiceSpreadingPriority", "weight": 1},
    {"name": "Zone", "weight" : 2, "argument": {"serviceAntiAffinity" : {"label": "zone"}}}
  ]
}