Merge pull request #9667 from chrischdi/pr-conformance-serial

🌱 test/conformance: add variables to overwrite parralelization of kubetest runs

test/e2e/k8s_conformance.go

@@ -21,6 +21,7 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"strconv"
 
 	. "github.com/onsi/ginkgo/v2"
 	. "github.com/onsi/gomega"
@@ -56,6 +57,8 @@ type K8SConformanceSpecInput struct {
 func K8SConformanceSpec(ctx context.Context, inputGetter func() K8SConformanceSpecInput) {
 	const (
 		kubetestConfigurationVariable = "KUBETEST_CONFIGURATION"
+		kubetestNumberOfNodesVariable = "KUBETEST_NUMBER_OF_NODES"
+		kubetestGinkgoNodesVariable   = "KUBETEST_GINKGO_NODES"
 	)
 	var (
 		specName               = "k8s-conformance"
@@ -118,15 +121,29 @@ func K8SConformanceSpec(ctx context.Context, inputGetter func() K8SConformanceSp
 
 		workloadProxy := input.BootstrapClusterProxy.GetWorkloadCluster(ctx, namespace.Name, clusterResources.Cluster.Name)
 
+		var err error
+
+		numberOfNodes := int(workerMachineCount)
+		if s, ok := os.LookupEnv(kubetestNumberOfNodesVariable); ok && s != "" {
+			numberOfNodes, err = strconv.Atoi(s)
+			Expect(err).ToNot(HaveOccurred(), "Failed to parse kubetestNumberOfNodesVariable to int")
+		}
+
+		ginkgoNodes := int(workerMachineCount)
+		if s, ok := os.LookupEnv(kubetestGinkgoNodesVariable); ok && s != "" {
+			ginkgoNodes, err = strconv.Atoi(s)
+			Expect(err).ToNot(HaveOccurred(), "Failed to parse kubetestGinkgoNodesVariable to int")
+		}
+
 		// Start running conformance test suites.
-		err := kubetest.Run(
+		err = kubetest.Run(
 			ctx,
 			kubetest.RunInput{
 				ClusterProxy:       workloadProxy,
-				NumberOfNodes:      int(workerMachineCount),
+				NumberOfNodes:      numberOfNodes,
 				ArtifactsDirectory: input.ArtifactFolder,
 				ConfigFilePath:     kubetestConfigFilePath,
-				GinkgoNodes:        int(workerMachineCount),
+				GinkgoNodes:        ginkgoNodes,
 			},
 		)
 		Expect(err).ToNot(HaveOccurred(), "Failed to run Kubernetes conformance")