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Merge pull request #125967 from vinayakankugoyal/kep4633
KEP-4633: Add intgration tests for Anonymous Auth Configurable Endpoints
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be776efb00
241
test/integration/apiserver/anonymous/anonymous_test.go
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241
test/integration/apiserver/anonymous/anonymous_test.go
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/*
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Copyright 2024 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package anonymous
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import (
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"context"
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"crypto/tls"
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"fmt"
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"net/http"
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"os"
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"testing"
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"github.com/stretchr/testify/require"
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rbacv1 "k8s.io/api/rbac/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apiserver/pkg/features"
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utilfeature "k8s.io/apiserver/pkg/util/feature"
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"k8s.io/client-go/kubernetes"
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_ "k8s.io/client-go/plugin/pkg/client/auth/oidc"
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featuregatetesting "k8s.io/component-base/featuregate/testing"
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kubeapiserverapptesting "k8s.io/kubernetes/cmd/kube-apiserver/app/testing"
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"k8s.io/kubernetes/pkg/apis/rbac"
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"k8s.io/kubernetes/test/integration/authutil"
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"k8s.io/kubernetes/test/integration/framework"
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)
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const (
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defaultNamespace = "default"
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defaultRBACRoleName = "developer-role"
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defaultRBACRoleBindingName = "developer-role-binding"
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anonymousUser = "system:anonymous"
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)
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var (
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defaultRole = &rbacv1.Role{
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TypeMeta: metav1.TypeMeta{APIVersion: "rbac.authorization.k8s.io/v1", Kind: "Role"},
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ObjectMeta: metav1.ObjectMeta{Name: defaultRBACRoleName, Namespace: defaultNamespace},
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Rules: []rbacv1.PolicyRule{
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{
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Verbs: []string{"list"},
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Resources: []string{"pods"},
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APIGroups: []string{""},
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},
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},
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}
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defaultRoleBinding = &rbacv1.RoleBinding{
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TypeMeta: metav1.TypeMeta{APIVersion: "rbac.authorization.k8s.io/v1", Kind: "RoleBinding"},
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ObjectMeta: metav1.ObjectMeta{Name: defaultRBACRoleBindingName, Namespace: defaultNamespace},
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Subjects: []rbacv1.Subject{
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{
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APIGroup: rbac.GroupName,
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Kind: rbacv1.UserKind,
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Name: anonymousUser,
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},
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},
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RoleRef: rbacv1.RoleRef{
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APIGroup: rbac.GroupName,
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Kind: "Role",
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Name: defaultRBACRoleName,
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},
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}
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)
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func TestStructuredAuthenticationConfig(t *testing.T) {
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t.Log("Testing anonymous authenticator with authentication config")
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featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.StructuredAuthenticationConfiguration, true)
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featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.AnonymousAuthConfigurableEndpoints, true)
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testCases := []struct {
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desc string
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authConfig string
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additionalFlags []string
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assertErrFn func(t *testing.T, errorToCheck error)
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assertFn func(t *testing.T, server kubeapiserverapptesting.TestServer)
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}{
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{
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desc: "valid config no conditions",
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authConfig: `
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apiVersion: apiserver.config.k8s.io/v1beta1
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kind: AuthenticationConfiguration
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anonymous:
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enabled: true
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`,
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assertErrFn: func(t *testing.T, errorToCheck error) {
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require.NoError(t, errorToCheck)
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},
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assertFn: func(t *testing.T, server kubeapiserverapptesting.TestServer) {
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configureRBAC(t, server)
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client := insecureHTTPClient(t)
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resp, err := client.Get(server.ClientConfig.Host + "/api/v1/namespaces/default/pods")
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require.NoError(t, err)
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defer resp.Body.Close() //nolint:errcheck
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require.Equal(t, 200, resp.StatusCode)
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resp, err = client.Get(server.ClientConfig.Host + "/livez")
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require.NoError(t, err)
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defer resp.Body.Close() //nolint:errcheck
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require.Equal(t, 200, resp.StatusCode)
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resp, err = client.Get(server.ClientConfig.Host + "/healthz")
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require.NoError(t, err)
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defer resp.Body.Close() //nolint:errcheck
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require.Equal(t, 200, resp.StatusCode)
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},
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additionalFlags: nil,
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},
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{
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desc: "valid config with conditions",
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authConfig: `
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apiVersion: apiserver.config.k8s.io/v1beta1
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kind: AuthenticationConfiguration
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anonymous:
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enabled: true
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conditions:
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- path: "/livez"
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`,
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assertErrFn: func(t *testing.T, errorToCheck error) {
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require.NoError(t, errorToCheck)
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},
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assertFn: func(t *testing.T, server kubeapiserverapptesting.TestServer) {
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client := insecureHTTPClient(t)
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resp, err := client.Get(server.ClientConfig.Host + "/api/v1/namespaces/default/pods")
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require.NoError(t, err)
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defer resp.Body.Close() //nolint:errcheck
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require.Equal(t, 401, resp.StatusCode)
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resp, err = client.Get(server.ClientConfig.Host + "/livez")
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require.NoError(t, err)
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defer resp.Body.Close() //nolint:errcheck
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require.Equal(t, 200, resp.StatusCode)
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resp, err = client.Get(server.ClientConfig.Host + "/healthz")
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require.NoError(t, err)
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defer resp.Body.Close() //nolint:errcheck
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require.Equal(t, 401, resp.StatusCode)
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},
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additionalFlags: nil,
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},
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}
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for _, tc := range testCases {
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t.Run(tc.desc, func(t *testing.T) {
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flags := []string{"--authorization-mode=RBAC"}
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flags = append(flags, fmt.Sprintf("--authentication-config=%s", writeTempFile(t, tc.authConfig)))
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flags = append(flags, tc.additionalFlags...)
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server, err := kubeapiserverapptesting.StartTestServer(
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t,
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kubeapiserverapptesting.NewDefaultTestServerOptions(),
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flags,
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framework.SharedEtcd(),
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)
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tc.assertErrFn(t, err)
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if tc.assertFn == nil {
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return
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}
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defer server.TearDownFn()
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tc.assertFn(t, server)
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})
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}
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}
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func TestMain(m *testing.M) {
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framework.EtcdMain(m.Run)
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}
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func writeTempFile(t *testing.T, content string) string {
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t.Helper()
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file, err := os.CreateTemp("", "anonymous-auth-test")
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if err != nil {
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t.Fatal(err)
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}
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t.Cleanup(func() {
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if err := os.Remove(file.Name()); err != nil {
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t.Fatal(err)
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}
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})
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if err := os.WriteFile(file.Name(), []byte(content), 0600); err != nil {
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t.Fatal(err)
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}
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return file.Name()
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}
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func configureRBAC(t *testing.T, server kubeapiserverapptesting.TestServer) {
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t.Helper()
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kc := kubernetes.NewForConfigOrDie(server.ClientConfig)
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_, err := kc.RbacV1().Roles(defaultNamespace).Create(context.Background(), defaultRole, metav1.CreateOptions{})
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require.NoError(t, err)
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_, err = kc.RbacV1().RoleBindings(defaultNamespace).Create(context.Background(), defaultRoleBinding, metav1.CreateOptions{})
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require.NoError(t, err)
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authutil.WaitForNamedAuthorizationUpdate(
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t,
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context.Background(),
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kc.AuthorizationV1(),
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anonymousUser,
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defaultNamespace, // namespace
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"list",
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"", // resource name
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schema.GroupResource{Group: "", Resource: "pods"},
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true,
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)
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}
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func insecureHTTPClient(t *testing.T) *http.Client {
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t.Helper()
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return &http.Client{
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Transport: &http.Transport{
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TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
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},
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}
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}
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