Compare Postgres pod priority on Sync (#1144)

* compare Postgres pod priority on Sync

Co-authored-by: Sergey Dudoladov <sergey.dudoladov@zalando.de>

manifests/configmap.yaml

@@ -85,6 +85,7 @@ data:
   pod_service_account_name: "postgres-pod"
   # pod_service_account_role_binding_definition: ""
   pod_terminate_grace_period: 5m
+  # pod_priority_class_name: "postgres-pod-priority"
   # postgres_superuser_teams: "postgres_superusers"
   # protected_role_names: "admin"
   ready_wait_interval: 3s

manifests/postgres-pod-priority-class.yaml

@@ -0,0 +1,11 @@
+apiVersion: scheduling.k8s.io/v1
+description: 'This priority class must be used only for databases controlled by the
+  Postgres operator'
+kind: PriorityClass
+metadata:
+  labels:
+    application: postgres-operator
+  name: postgres-pod-priority
+preemptionPolicy: PreemptLowerPriority
+globalDefault: false
+value: 1000000