/
deployment.go
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/
deployment.go
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// Copyright 2023 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 gardenermetricsexporter
import (
"strconv"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/intstr"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/utils/ptr"
v1beta1constants "github.com/gardener/gardener/pkg/apis/core/v1beta1/constants"
kubeapiserverconstants "github.com/gardener/gardener/pkg/component/kubernetes/apiserver/constants"
"github.com/gardener/gardener/pkg/resourcemanager/controller/garbagecollector/references"
"github.com/gardener/gardener/pkg/utils"
gardenerutils "github.com/gardener/gardener/pkg/utils/gardener"
)
func (g *gardenerMetricsExporter) deployment(secretGenericTokenKubeconfig, secretVirtualGardenAccess string) *appsv1.Deployment {
deployment := &appsv1.Deployment{
ObjectMeta: metav1.ObjectMeta{
Name: deploymentName,
Namespace: g.namespace,
Labels: GetLabels(),
},
Spec: appsv1.DeploymentSpec{
Replicas: ptr.To[int32](1),
RevisionHistoryLimit: ptr.To[int32](2),
Selector: &metav1.LabelSelector{
MatchLabels: GetLabels(),
},
Template: corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: utils.MergeStringMaps(GetLabels(), map[string]string{
v1beta1constants.LabelNetworkPolicyToDNS: v1beta1constants.LabelNetworkPolicyAllowed,
gardenerutils.NetworkPolicyLabel("virtual-garden-"+v1beta1constants.DeploymentNameKubeAPIServer, kubeapiserverconstants.Port): v1beta1constants.LabelNetworkPolicyAllowed,
}),
},
Spec: corev1.PodSpec{
PriorityClassName: v1beta1constants.PriorityClassNameGardenSystem100,
AutomountServiceAccountToken: ptr.To(false),
Containers: []corev1.Container{
{
Name: deploymentName,
Image: g.values.Image,
ImagePullPolicy: corev1.PullIfNotPresent,
Command: []string{
"/gardener-metrics-exporter",
"--kubeconfig=" + gardenerutils.PathGenericKubeconfig,
"--bind-address=0.0.0.0",
"--port=" + strconv.Itoa(probePort),
},
SecurityContext: &corev1.SecurityContext{
ReadOnlyRootFilesystem: ptr.To(true),
},
Resources: corev1.ResourceRequirements{
Requests: map[corev1.ResourceName]resource.Quantity{
corev1.ResourceCPU: resource.MustParse("100m"),
corev1.ResourceMemory: resource.MustParse("128Mi"),
},
},
Ports: []corev1.ContainerPort{
{
Name: "port",
ContainerPort: probePort,
Protocol: corev1.ProtocolTCP,
},
},
LivenessProbe: &corev1.Probe{
ProbeHandler: corev1.ProbeHandler{
HTTPGet: &corev1.HTTPGetAction{
Path: "/",
Port: intstr.FromInt32(probePort),
Scheme: corev1.URISchemeHTTP,
},
},
PeriodSeconds: 5,
},
ReadinessProbe: &corev1.Probe{
ProbeHandler: corev1.ProbeHandler{
HTTPGet: &corev1.HTTPGetAction{
Path: "/metrics",
Port: intstr.FromInt32(probePort),
Scheme: corev1.URISchemeHTTP,
},
},
PeriodSeconds: 5,
},
},
},
},
},
},
}
utilruntime.Must(gardenerutils.InjectGenericKubeconfig(deployment, secretGenericTokenKubeconfig, secretVirtualGardenAccess))
utilruntime.Must(references.InjectAnnotations(deployment))
return deployment
}