/
ensurer.go
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/
ensurer.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 controlplane
import (
"context"
"github.com/Masterminds/semver"
"github.com/go-logr/logr"
kubeletconfigv1beta1 "k8s.io/kubelet/config/v1beta1"
"k8s.io/utils/pointer"
extensionscontextwebhook "github.com/gardener/gardener/extensions/pkg/webhook/context"
"github.com/gardener/gardener/extensions/pkg/webhook/controlplane/genericmutator"
v1beta1helper "github.com/gardener/gardener/pkg/apis/core/v1beta1/helper"
extensionsv1alpha1 "github.com/gardener/gardener/pkg/apis/extensions/v1alpha1"
)
// NewEnsurer creates a new controlplane ensurer.
func NewEnsurer(logger logr.Logger) genericmutator.Ensurer {
return &ensurer{
logger: logger.WithName("local-controlplane-ensurer"),
}
}
type ensurer struct {
genericmutator.NoopEnsurer
logger logr.Logger
}
func (e *ensurer) EnsureKubeletConfiguration(_ context.Context, _ extensionscontextwebhook.GardenContext, _ *semver.Version, newObj, _ *kubeletconfigv1beta1.KubeletConfiguration) error {
newObj.FailSwapOn = pointer.Bool(false)
return nil
}
// EnsureAdditionalFiles ensures that additional required system files are added.
func (e *ensurer) EnsureAdditionalFiles(ctx context.Context, gc extensionscontextwebhook.GardenContext, new, _ *[]extensionsv1alpha1.File) error {
cluster, err := gc.GetCluster(ctx)
if err != nil {
return err
}
kindClusterName := "gardener-local-control-plane"
if v1beta1helper.IsHAControlPlaneConfigured(cluster.Shoot) {
kindClusterName = "gardener-local-ha-control-plane"
}
appendUniqueFile(new, extensionsv1alpha1.File{
Path: "/etc/containerd/conf.d/50-provider-local-registry.toml",
Permissions: pointer.Int32(0644),
Content: extensionsv1alpha1.FileContent{
Inline: &extensionsv1alpha1.FileContentInline{
Encoding: "",
Data: `[plugins."io.containerd.grpc.v1.cri".registry.mirrors."localhost:5001"]
endpoint = ["http://` + kindClusterName + `:5001"]
[plugins."io.containerd.grpc.v1.cri".registry.mirrors."docker.io"]
endpoint = ["http://` + kindClusterName + `:5002"]
[plugins."io.containerd.grpc.v1.cri".registry.mirrors."gcr.io"]
endpoint = ["http://` + kindClusterName + `:5003"]
[plugins."io.containerd.grpc.v1.cri".registry.mirrors."eu.gcr.io"]
endpoint = ["http://` + kindClusterName + `:5004"]
[plugins."io.containerd.grpc.v1.cri".registry.mirrors."ghcr.io"]
endpoint = ["http://` + kindClusterName + `:5005"]
[plugins."io.containerd.grpc.v1.cri".registry.mirrors."registry.k8s.io"]
endpoint = ["http://` + kindClusterName + `:5006"]
[plugins."io.containerd.grpc.v1.cri".registry.mirrors."quay.io"]
endpoint = ["http://` + kindClusterName + `:5007"]
`,
},
},
})
return nil
}
// appendUniqueFile appends a unit file only if it does not exist, otherwise overwrite content of previous files
func appendUniqueFile(files *[]extensionsv1alpha1.File, file extensionsv1alpha1.File) {
resFiles := make([]extensionsv1alpha1.File, 0, len(*files))
for _, f := range *files {
if f.Path != file.Path {
resFiles = append(resFiles, f)
}
}
*files = append(resFiles, file)
}