Add a priorityClass to btp manager

config/default/kustomization.yaml

@@ -29,6 +29,7 @@ resources:
 #- ../certmanager
 # [PROMETHEUS] To enable prometheus monitor, uncomment all sections with 'PROMETHEUS'.
 - ../prometheus
+- ../priority-class
 
 patchesStrategicMerge:
 # Protect the /metrics endpoint by putting it behind auth.

config/manager/manager.yaml

@@ -19,6 +19,7 @@ spec:
       labels:
         app.kubernetes.io/component: btp-manager.kyma-project.io
     spec:
+      priorityClassName: "kyma-priority"
       securityContext:
         runAsNonRoot: true
       containers:

config/priority-class/btp_manager_priority_class.yaml

@@ -0,0 +1,7 @@
+apiVersion: scheduling.k8s.io/v1
+kind: PriorityClass
+metadata:
+  name: kyma-priority
+value: 2100000
+globalDefault: false
+description: "Scheduling priority of the btp-operator module. Must not be blocked by unschedulable user workloads."

config/priority-class/kustomization.yaml

@@ -0,0 +1,2 @@
+resources:
+- btp_manager_priority_class.yaml

controllers/utils_test.go

@@ -27,7 +27,6 @@ import (
 	admissionregistrationv1 "k8s.io/api/admissionregistration/v1"
 	appsv1 "k8s.io/api/apps/v1"
 	corev1 "k8s.io/api/core/v1"
-	schedulingv1 "k8s.io/api/scheduling/v1"
 	k8serrors "k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/api/meta"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -55,7 +54,6 @@ const (
 	btpOperatorKind                = "BtpOperator"
 	btpOperatorApiVersion          = `operator.kyma-project.io\v1alpha1`
 	secretYamlPath                 = "testdata/test-secret.yaml"
-	priorityClassYamlPath          = "testdata/test-priorityclass.yaml"
 	k8sOpsTimeout                  = time.Second * 3
 	k8sOpsPollingInterval          = time.Millisecond * 200
 	extraLabelKey                  = "reconciler.kyma-project.io/managed-by"
@@ -324,16 +322,6 @@ func copyDirRecursively(src, target string) {
 }
 
 func createPrereqs() error {
-	pClass := &schedulingv1.PriorityClass{}
-	Expect(createK8sResourceFromYaml(pClass, priorityClassYamlPath)).To(Succeed())
-	if err := k8sClient.Get(ctx, client.ObjectKeyFromObject(pClass), pClass); err != nil {
-		if k8serrors.IsNotFound(err) {
-			Eventually(func() error { return k8sClient.Create(ctx, pClass) }).WithTimeout(k8sOpsTimeout).WithPolling(k8sOpsPollingInterval).Should(Succeed())
-		} else {
-			return err
-		}
-	}
-
 	kymaNs := &corev1.Namespace{ObjectMeta: metav1.ObjectMeta{Name: kymaNamespace}}
 	if err := k8sClient.Get(ctx, client.ObjectKeyFromObject(kymaNs), kymaNs); err != nil {
 		if k8serrors.IsNotFound(err) {

deployments/prerequisites.yaml

@@ -2,11 +2,4 @@ kind: Namespace
 apiVersion: v1
 metadata:
   name: kyma-system
----
-apiVersion: scheduling.k8s.io/v1
-kind: PriorityClass
-metadata:
-  name: kyma-system
-value: 99
-globalDefault: false
-description: "This priority class should be used for Kyma pods only."
+

docs/contributor/02-10-operations.md

@@ -15,10 +15,9 @@ BTP Manager performs the following operations:
 The prerequisites for the SAP BTP service operator provisioning are:
 
 - Namespace `kyma-system`
-- PriorityClass `kyma-system`
 - Secret `sap-btp-manager` with data for the SAP BTP service operator
 
-The namespace and PriorityClass resources are created during Kyma installation. The Secret is injected into the cluster
+The namespace is created during Kyma installation. The Secret is injected into the cluster
 by Kyma Environment Broker (KEB). If you want to provision the SAP BTP service operator in a cluster without Kyma, you must create
 the prerequisites yourself.
 

module-chart/overrides.yaml

@@ -11,3 +11,4 @@ manager:
   kubernetesMatchLabels:
     enabled: true
   enable_limited_cache: false
+  priorityClassName: "btp-manager-kyma-priority"

module-resources/apply/deployment.yml

@@ -83,6 +83,7 @@ spec:
               name: cert
               readOnly: true
       terminationGracePeriodSeconds: 10
+      priorityClassName: btp-manager-kyma-priority
       volumes:
         - name: cert
           secret: