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add.go
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add.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 healthcheck
import (
"context"
"time"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/utils/pointer"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/manager"
extensionsconfig "github.com/gardener/gardener/extensions/pkg/apis/config"
"github.com/gardener/gardener/extensions/pkg/controller/healthcheck"
"github.com/gardener/gardener/extensions/pkg/controller/healthcheck/general"
"github.com/gardener/gardener/extensions/pkg/controller/healthcheck/worker"
gardencorev1beta1 "github.com/gardener/gardener/pkg/apis/core/v1beta1"
extensionsv1alpha1 "github.com/gardener/gardener/pkg/apis/extensions/v1alpha1"
"github.com/gardener/gardener/pkg/provider-local/local"
)
var (
defaultSyncPeriod = time.Second * 30
// DefaultAddOptions are the default DefaultAddArgs for AddToManager.
DefaultAddOptions = healthcheck.DefaultAddArgs{
HealthCheckConfig: extensionsconfig.HealthCheckConfig{
SyncPeriod: metav1.Duration{Duration: defaultSyncPeriod},
// Increase default QPS and Burst by factor 10 as a configuration example of custom REST options for shoot clients
ShootRESTOptions: &extensionsconfig.RESTOptions{
QPS: pointer.Float32(50),
Burst: pointer.Int(100),
},
},
}
// GardenletManagesMCM specifies whether the machine-controller-manager is managed by gardenlet.
GardenletManagesMCM bool
)
// RegisterHealthChecks registers health checks for each extension resource
// HealthChecks are grouped by extension (e.g worker), extension.type (e.g local) and Health Check Type (e.g SystemComponentsHealthy)
func RegisterHealthChecks(ctx context.Context, mgr manager.Manager, opts healthcheck.DefaultAddArgs) error {
var (
healthChecks = []healthcheck.ConditionTypeToHealthCheck{{
ConditionType: string(gardencorev1beta1.ShootEveryNodeReady),
HealthCheck: worker.NewNodesChecker(),
}}
conditionTypesToRemove = sets.New(gardencorev1beta1.ShootControlPlaneHealthy)
)
if !GardenletManagesMCM {
healthChecks = append(healthChecks, healthcheck.ConditionTypeToHealthCheck{
ConditionType: string(gardencorev1beta1.ShootControlPlaneHealthy),
HealthCheck: general.NewSeedDeploymentHealthChecker(local.MachineControllerManagerName),
})
conditionTypesToRemove = conditionTypesToRemove.Delete(gardencorev1beta1.ShootControlPlaneHealthy)
}
return healthcheck.DefaultRegistration(
ctx,
local.Type,
extensionsv1alpha1.SchemeGroupVersion.WithKind(extensionsv1alpha1.WorkerResource),
func() client.ObjectList { return &extensionsv1alpha1.WorkerList{} },
func() extensionsv1alpha1.Object { return &extensionsv1alpha1.Worker{} },
mgr,
opts,
nil,
healthChecks,
conditionTypesToRemove,
)
}
// AddToManager adds a controller with the default Options.
func AddToManager(ctx context.Context, mgr manager.Manager) error {
return RegisterHealthChecks(ctx, mgr, DefaultAddOptions)
}