Merge pull request #1398 from openshift-cherrypick-robot/cherry-pick-1396-to-release-4.20

[release-4.20] OCPBUGS-62214: E2E: Add function to check control plane nodes are schedulable.

Author: openshift-merge-bot[bot]

test/e2e/performanceprofile/functests/2_performance_update/updating_profile.go

@@ -31,6 +31,7 @@ import (
 	testutils "github.com/openshift/cluster-node-tuning-operator/test/e2e/performanceprofile/functests/utils"
 	"github.com/openshift/cluster-node-tuning-operator/test/e2e/performanceprofile/functests/utils/cgroup/runtime"
 	testclient "github.com/openshift/cluster-node-tuning-operator/test/e2e/performanceprofile/functests/utils/client"
+	"github.com/openshift/cluster-node-tuning-operator/test/e2e/performanceprofile/functests/utils/cluster"
 	"github.com/openshift/cluster-node-tuning-operator/test/e2e/performanceprofile/functests/utils/discovery"
 	"github.com/openshift/cluster-node-tuning-operator/test/e2e/performanceprofile/functests/utils/hypershift"
 	"github.com/openshift/cluster-node-tuning-operator/test/e2e/performanceprofile/functests/utils/label"
@@ -404,6 +405,12 @@ var _ = Describe("[rfe_id:28761][performance] Updating parameters in performance
 			if len(nonPerformancesWorkers) > 1 {
 				newCnfNode = &nonPerformancesWorkers[0]
 			}
+			ok, err := cluster.IsControlPlaneSchedulable(context.TODO())
+			Expect(err).ToNot(HaveOccurred(), "Unable to fetch schedulable information of control plane nodes: %v", err)
+			if ok {
+				Skip("Skipping the test - Control plane nodes are schedulable")
+			}
+
 			if newCnfNode == nil {
 				Skip("Skipping the test - cluster does not have another available worker node ")
 			}

test/e2e/performanceprofile/functests/utils/cluster/cluster.go

@@ -4,10 +4,12 @@ import (
 	"context"
 	"time"
 
+	clientconfigv1 "github.com/openshift/client-go/config/clientset/versioned/typed/config/v1"
+	testclient "github.com/openshift/cluster-node-tuning-operator/test/e2e/performanceprofile/functests/utils/client"
 	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"sigs.k8s.io/controller-runtime/pkg/client"
-
-	testclient "github.com/openshift/cluster-node-tuning-operator/test/e2e/performanceprofile/functests/utils/client"
+	"sigs.k8s.io/controller-runtime/pkg/client/config"
 )
 
 // IsSingleNode validates if the environment is single node cluster
@@ -29,3 +31,19 @@ func ComputeTestTimeout(baseTimeout time.Duration, isSno bool) time.Duration {
 
 	return testTimeout
 }
+
+// Check if the control plane nodes are schedulable, returns true if schedulable else false
+func IsControlPlaneSchedulable(ctx context.Context) (bool, error) {
+	// Get the rest.Config using the helper function
+	cfg, err := config.GetConfig()
+	if err != nil {
+		return false, err
+	}
+
+	openshiftConfigClient := clientconfigv1.NewForConfigOrDie(cfg)
+	schedulerInfo, err := openshiftConfigClient.Schedulers().Get(ctx, "cluster", metav1.GetOptions{})
+	if err != nil {
+		return false, err
+	}
+	return schedulerInfo.Spec.MastersSchedulable, nil
+}