conformance tests should have at least 2 untainted nodes

test/conformance/testdata/conformance.yaml

@@ -933,6 +933,13 @@
     visible to subsequent reads.
   release: v1.22
   file: test/e2e/apps/statefulset.go
+- testname: Conformance tests minimum number of nodes.
+  codename: '[sig-architecture] Conformance Tests should have at least two untainted
+    nodes [Conformance]'
+  description: Conformance tests requires at least two untainted nodes where pods
+    can be scheduled.
+  release: v1.23
+  file: test/e2e/architecture/conformance.go
 - testname: CertificateSigningRequest API
   codename: '[sig-auth] Certificates API [Privileged:ClusterAdmin] should support
     CSR API operations [Conformance]'

test/e2e/architecture/OWNERS

@@ -0,0 +1,16 @@
+# See the OWNERS docs at https://go.k8s.io/owners
+
+# This is the owner of the test code.  The test data itself is owned by sig-architecture.
+reviewers:
+  - aojea
+  - cheftako
+  - oomichi
+  - johnbelamaric
+approvers:
+  - cheftako
+  - spiffxp
+  - johnbelamaric
+emeritus_approvers:
+labels:
+  - area/conformance
+  - sig/architecture

test/e2e/architecture/conformance.go

@@ -0,0 +1,45 @@
+/*
+Copyright 2021 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package architecture
+
+import (
+	"time"
+
+	"github.com/onsi/ginkgo"
+
+	"k8s.io/kubernetes/test/e2e/framework"
+	e2enode "k8s.io/kubernetes/test/e2e/framework/node"
+)
+
+var _ = SIGDescribe("Conformance Tests", func() {
+	f := framework.NewDefaultFramework("conformance-tests")
+
+	/*
+		Release: v1.23
+		Testname: Conformance tests minimum number of nodes.
+		Description: Conformance tests requires at least two untainted nodes where pods can be scheduled.
+	*/
+	framework.ConformanceIt("should have at least two untainted nodes", func() {
+		ginkgo.By("Getting node addresses")
+		framework.ExpectNoError(framework.WaitForAllNodesSchedulable(f.ClientSet, 10*time.Minute))
+		nodeList, err := e2enode.GetReadySchedulableNodes(f.ClientSet)
+		framework.ExpectNoError(err)
+		if len(nodeList.Items) < 2 {
+			framework.Failf("Conformance requires at least two nodes")
+		}
+	})
+})

test/e2e/architecture/framework.go

@@ -0,0 +1,24 @@
+/*
+Copyright 2021 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package architecture
+
+import "github.com/onsi/ginkgo"
+
+// SIGDescribe annotates the test with the SIG label.
+func SIGDescribe(text string, body func()) bool {
+	return ginkgo.Describe("[sig-architecture] "+text, body)
+}

test/e2e/e2e_test.go

@@ -44,6 +44,7 @@ import (
 	// test sources
 	_ "k8s.io/kubernetes/test/e2e/apimachinery"
 	_ "k8s.io/kubernetes/test/e2e/apps"
+	_ "k8s.io/kubernetes/test/e2e/architecture"
 	_ "k8s.io/kubernetes/test/e2e/auth"
 	_ "k8s.io/kubernetes/test/e2e/autoscaling"
 	_ "k8s.io/kubernetes/test/e2e/cloud"