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resource_manager.go
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/
resource_manager.go
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// Copyright 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 botanist
import (
"context"
"github.com/Masterminds/semver/v3"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/utils/pointer"
v1beta1constants "github.com/gardener/gardener/pkg/apis/core/v1beta1/constants"
v1beta1helper "github.com/gardener/gardener/pkg/apis/core/v1beta1/helper"
"github.com/gardener/gardener/pkg/client/kubernetes"
"github.com/gardener/gardener/pkg/component/resourcemanager"
"github.com/gardener/gardener/pkg/component/shared"
"github.com/gardener/gardener/pkg/logger"
gardenerutils "github.com/gardener/gardener/pkg/utils/gardener"
kubernetesutils "github.com/gardener/gardener/pkg/utils/kubernetes"
)
// DefaultResourceManager returns an instance of Gardener Resource Manager with defaults configured for being deployed in a Shoot namespace
func (b *Botanist) DefaultResourceManager() (resourcemanager.Interface, error) {
version, err := semver.NewVersion(b.SeedClientSet.Version())
if err != nil {
return nil, err
}
var defaultNotReadyTolerationSeconds, defaultUnreachableTolerationSeconds *int64
if b.Config != nil && b.Config.NodeToleration != nil {
nodeToleration := b.Config.NodeToleration
defaultNotReadyTolerationSeconds = nodeToleration.DefaultNotReadyTolerationSeconds
defaultUnreachableTolerationSeconds = nodeToleration.DefaultUnreachableTolerationSeconds
}
return shared.NewTargetGardenerResourceManager(
b.SeedClientSet.Client(),
b.Shoot.SeedNamespace,
b.SecretsManager,
b.Seed.GetInfo().Status.ClusterIdentity,
defaultNotReadyTolerationSeconds,
defaultUnreachableTolerationSeconds,
version,
logger.InfoLevel, logger.FormatJSON,
"",
true,
v1beta1constants.PriorityClassNameShootControlPlane400,
v1beta1helper.ShootSchedulingProfile(b.Shoot.GetInfo()),
v1beta1constants.SecretNameCACluster,
gardenerutils.ExtractSystemComponentsTolerations(b.Shoot.GetInfo().Spec.Provider.Workers),
b.Shoot.TopologyAwareRoutingEnabled,
pointer.String(b.Shoot.ComputeOutOfClusterAPIServerAddress(true)),
b.Shoot.IsWorkerless,
[]string{metav1.NamespaceSystem, v1beta1constants.KubernetesDashboardNamespace},
)
}
// DeployGardenerResourceManager deploys the gardener-resource-manager
func (b *Botanist) DeployGardenerResourceManager(ctx context.Context) error {
return shared.DeployGardenerResourceManager(
ctx,
b.SeedClientSet.Client(),
b.SecretsManager,
b.Shoot.Components.ControlPlane.ResourceManager,
b.Shoot.SeedNamespace,
func(ctx context.Context) (int32, error) {
return b.determineControllerReplicas(ctx, v1beta1constants.DeploymentNameGardenerResourceManager, 2, false)
},
func() string { return b.Shoot.ComputeInClusterAPIServerAddress(true) })
}
// ScaleGardenerResourceManagerToOne scales the gardener-resource-manager deployment
func (b *Botanist) ScaleGardenerResourceManagerToOne(ctx context.Context) error {
return kubernetes.ScaleDeployment(ctx, b.SeedClientSet.Client(), kubernetesutils.Key(b.Shoot.SeedNamespace, v1beta1constants.DeploymentNameGardenerResourceManager), 1)
}