Added support for prometheus addnotations #293 (#256)

Author: Alevsk

models/create_tenant_request.go

@@ -681,10 +681,12 @@ func getTenantCreatedResponse(session *models.Principal, params admin_api.Create
 	}
 	// add annotations
 	var annotations map[string]string
-	if len(tenantReq.Annotations) > 0 {
-		if minInst.Spec.Metadata == nil {
-			minInst.Spec.Metadata = &metav1.ObjectMeta{}
+	if minInst.Spec.Metadata == nil {
+		minInst.Spec.Metadata = &metav1.ObjectMeta{
+			Annotations: map[string]string{},
 		}
+	}
+	if len(tenantReq.Annotations) > 0 {
 		annotations = tenantReq.Annotations
 		minInst.Spec.Metadata.Annotations = annotations
 	}
@@ -718,6 +720,13 @@ func getTenantCreatedResponse(session *models.Principal, params admin_api.Create
 		}
 	}
 
+	// prometheus annotations support
+	if tenantReq.EnablePrometheus != nil && *tenantReq.EnablePrometheus && minInst.Spec.Metadata != nil && minInst.Spec.Metadata.Annotations != nil {
+		minInst.Spec.Metadata.Annotations["prometheus.io/path"] = "/minio/prometheus/metrics"
+		minInst.Spec.Metadata.Annotations["prometheus.io/port"] = fmt.Sprint(operator.MinIOPort)
+		minInst.Spec.Metadata.Annotations["prometheus.io/scrape"] = "true"
+	}
+
 	// set console image if provided
 	if tenantReq.ConsoleImage != "" {
 		minInst.Spec.Console.Image = tenantReq.ConsoleImage

restapi/admin_tenants.go

@@ -1837,6 +1837,9 @@ definitions:
       enable_tls:
         type: boolean
         default: true
+      enable_prometheus:
+        type: boolean
+        default: false
       namespace:
         type: string
       erasureCodingParity: