Revert "Revert "LimitRange updates for Resource Requirements Requests""

pkg/api/v1/defaults.go

@@ -173,6 +173,37 @@ func addDefaultingFuncs() {
 				}
 			}
 		},
+		func(obj *LimitRangeItem) {
+			// for container limits, we apply default values
+			if obj.Type == LimitTypeContainer {
+
+				if obj.Default == nil {
+					obj.Default = make(ResourceList)
+				}
+				if obj.DefaultRequest == nil {
+					obj.DefaultRequest = make(ResourceList)
+				}
+
+				// If a default limit is unspecified, but the max is specified, default the limit to the max
+				for key, value := range obj.Max {
+					if _, exists := obj.Default[key]; !exists {
+						obj.Default[key] = *(value.Copy())
+					}
+				}
+				// If a default limit is specified, but the default request is not, default request to limit
+				for key, value := range obj.Default {
+					if _, exists := obj.DefaultRequest[key]; !exists {
+						obj.DefaultRequest[key] = *(value.Copy())
+					}
+				}
+				// If a default request is not specified, but the min is provided, default request to the min
+				for key, value := range obj.Min {
+					if _, exists := obj.DefaultRequest[key]; !exists {
+						obj.DefaultRequest[key] = *(value.Copy())
+					}
+				}
+			}
+		},
 	)
 }