/
roles.go
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/
roles.go
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// Copyright (c) 2022 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 kubeapiserver
import (
"context"
corev1 "k8s.io/api/core/v1"
rbacv1 "k8s.io/api/rbac/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/utils/pointer"
"github.com/gardener/gardener/pkg/controllerutils"
)
const (
serviceAccountName = "kube-apiserver"
roleNameHAVPN = "kube-apiserver-vpn-client-init"
)
func (k *kubeAPIServer) emptyServiceAccount() *corev1.ServiceAccount {
return &corev1.ServiceAccount{
ObjectMeta: metav1.ObjectMeta{
Name: serviceAccountName,
Namespace: k.namespace,
},
}
}
func (k *kubeAPIServer) emptyRoleHAVPN() *rbacv1.Role {
return &rbacv1.Role{
ObjectMeta: metav1.ObjectMeta{
Name: roleNameHAVPN,
Namespace: k.namespace,
},
}
}
func (k *kubeAPIServer) emptyRoleBindingHAVPN() *rbacv1.RoleBinding {
return &rbacv1.RoleBinding{
ObjectMeta: metav1.ObjectMeta{
Name: roleNameHAVPN,
Namespace: k.namespace,
},
}
}
func (k *kubeAPIServer) reconcileServiceAccount(ctx context.Context) error {
sa := k.emptyServiceAccount()
_, err := controllerutils.GetAndCreateOrMergePatch(ctx, k.client.Client(), sa, func() error {
sa.AutomountServiceAccountToken = pointer.Bool(false)
return nil
})
return err
}
func (k *kubeAPIServer) reconcileRoleHAVPN(ctx context.Context) error {
role := k.emptyRoleHAVPN()
_, err := controllerutils.GetAndCreateOrMergePatch(ctx, k.client.Client(), role, func() error {
role.Rules = []rbacv1.PolicyRule{
{
APIGroups: []string{""},
Resources: []string{"pods"},
Verbs: []string{"get", "list", "watch", "patch", "update"},
},
}
return nil
})
return err
}
func (k *kubeAPIServer) reconcileRoleBindingHAVPN(ctx context.Context) error {
roleBinding := k.emptyRoleBindingHAVPN()
_, err := controllerutils.GetAndCreateOrMergePatch(ctx, k.client.Client(), roleBinding, func() error {
roleBinding.RoleRef = rbacv1.RoleRef{
APIGroup: "rbac.authorization.k8s.io",
Kind: "Role",
Name: roleNameHAVPN,
}
roleBinding.Subjects = []rbacv1.Subject{
{
Kind: "ServiceAccount",
Name: serviceAccountName,
Namespace: k.namespace,
},
}
return nil
})
return err
}