/
poddisruptionbudget.go
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/
poddisruptionbudget.go
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// Copyright (c) 2021 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"
policyv1 "k8s.io/api/policy/v1"
policyv1beta1 "k8s.io/api/policy/v1beta1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/intstr"
"sigs.k8s.io/controller-runtime/pkg/client"
v1beta1constants "github.com/gardener/gardener/pkg/apis/core/v1beta1/constants"
"github.com/gardener/gardener/pkg/controllerutils"
versionutils "github.com/gardener/gardener/pkg/utils/version"
)
func (k *kubeAPIServer) emptyPodDisruptionBudget() client.Object {
pdbObjectMeta := metav1.ObjectMeta{
Name: v1beta1constants.DeploymentNameKubeAPIServer,
Namespace: k.namespace,
}
if versionutils.ConstraintK8sGreaterEqual121.Check(k.values.RuntimeVersion) {
return &policyv1.PodDisruptionBudget{
ObjectMeta: pdbObjectMeta,
}
}
return &policyv1beta1.PodDisruptionBudget{
ObjectMeta: pdbObjectMeta,
}
}
func (k *kubeAPIServer) reconcilePodDisruptionBudget(ctx context.Context, obj client.Object) error {
var (
pdbMaxUnavailable = intstr.FromInt(1)
pdbSelector = &metav1.LabelSelector{MatchLabels: getLabels()}
)
_, err := controllerutils.GetAndCreateOrMergePatch(ctx, k.client.Client(), obj, func() error {
switch pdb := obj.(type) {
case *policyv1.PodDisruptionBudget:
pdb.Labels = getLabels()
pdb.Spec = policyv1.PodDisruptionBudgetSpec{
MaxUnavailable: &pdbMaxUnavailable,
Selector: pdbSelector,
}
case *policyv1beta1.PodDisruptionBudget:
pdb.Labels = getLabels()
pdb.Spec = policyv1beta1.PodDisruptionBudgetSpec{
MaxUnavailable: &pdbMaxUnavailable,
Selector: pdbSelector,
}
}
return nil
})
return err
}