kubelet_config_test.go

Documentation: k8s.io/kubernetes/test/e2e_kubeadm

     1  /*
     2  Copyright 2019 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package kubeadm
    18  
    19  import (
    20  	"context"
    21  
    22  	rbacv1 "k8s.io/api/rbac/v1"
    23  	"k8s.io/kubernetes/test/e2e/framework"
    24  	admissionapi "k8s.io/pod-security-admission/api"
    25  
    26  	"github.com/onsi/ginkgo/v2"
    27  	"github.com/onsi/gomega"
    28  )
    29  
    30  const (
    31  	kubeletConfigConfigMapKey = "kubelet"
    32  )
    33  
    34  var (
    35  	kubeletConfigConfigMapName   string
    36  	kubeletConfigRoleName        string
    37  	kubeletConfigRoleBindingName string
    38  )
    39  
    40  // Define container for all the test specification aimed at verifying
    41  // that kubeadm creates the kubelet-config ConfigMap, that it is properly configured
    42  // and that all the related RBAC rules are in place
    43  var _ = Describe("kubelet-config ConfigMap", func() {
    44  
    45  	// Get an instance of the k8s test framework
    46  	f := framework.NewDefaultFramework("kubelet-config")
    47  	f.NamespacePodSecurityLevel = admissionapi.LevelPrivileged
    48  
    49  	// Tests in this container are not expected to create new objects in the cluster
    50  	// so we are disabling the creation of a namespace in order to get a faster execution
    51  	f.SkipNamespaceCreation = true
    52  
    53  	// kubelet-config map is named using the kubernetesVersion as a suffix, and so
    54  	// it is necessary to get it from the kubeadm-config ConfigMap before testing
    55  	ginkgo.BeforeEach(func() {
    56  		// if the kubelet-config map name is already known exit
    57  		if kubeletConfigConfigMapName != "" {
    58  			return
    59  		}
    60  
    61  		kubeletConfigConfigMapName = "kubelet-config"
    62  		kubeletConfigRoleName = "kubeadm:kubelet-config"
    63  		kubeletConfigRoleBindingName = kubeletConfigRoleName
    64  	})
    65  
    66  	ginkgo.It("should exist and be properly configured", func(ctx context.Context) {
    67  		cm := GetConfigMap(f.ClientSet, kubeSystemNamespace, kubeletConfigConfigMapName)
    68  		gomega.Expect(cm.Data).To(gomega.HaveKey(kubeletConfigConfigMapKey))
    69  	})
    70  
    71  	ginkgo.It("should have related Role and RoleBinding", func(ctx context.Context) {
    72  		ExpectRole(f.ClientSet, kubeSystemNamespace, kubeletConfigRoleName)
    73  		ExpectRoleBinding(f.ClientSet, kubeSystemNamespace, kubeletConfigRoleBindingName)
    74  	})
    75  
    76  	ginkgo.It("should be accessible for bootstrap tokens", func(ctx context.Context) {
    77  		ExpectSubjectHasAccessToResource(f.ClientSet,
    78  			rbacv1.GroupKind, bootstrapTokensGroup,
    79  			kubeadmConfigConfigMapResource,
    80  		)
    81  	})
    82  
    83  	ginkgo.It("should be accessible for nodes", func(ctx context.Context) {
    84  		ExpectSubjectHasAccessToResource(f.ClientSet,
    85  			rbacv1.GroupKind, nodesGroup,
    86  			kubeadmConfigConfigMapResource,
    87  		)
    88  	})
    89  })
    90
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