-
Notifications
You must be signed in to change notification settings - Fork 155
/
gcp.go
235 lines (206 loc) · 7.71 KB
/
gcp.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
/*
Copyright 2024 The Kubermatic Kubernetes Platform contributors.
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 cloudcontroller
import (
"fmt"
"k8c.io/kubermatic/v2/pkg/kubernetes"
"k8c.io/kubermatic/v2/pkg/resources"
"k8c.io/kubermatic/v2/pkg/resources/registry"
"k8c.io/kubermatic/v2/pkg/semver"
"k8c.io/reconciler/pkg/reconciling"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/utils/ptr"
)
const (
GCPCCMDeploymentName = "gcp-cloud-controller-manager"
)
var (
gcpResourceRequirements = corev1.ResourceRequirements{
// 50m comes from https://github.com/kubernetes/cloud-provider-gcp/blob/ccm/v28.2.1/cluster/gce/gci/configure-helper.sh#L3471C10-L3471C10
// and there is no other limit/request being inserted into the GCP CCM manifest
// (cf. https://github.com/kubernetes/cloud-provider-gcp/blob/ccm/v28.2.1/deploy/cloud-controller-manager.manifest#L32)
//
// All other resource constraints are made up.
Requests: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("50m"),
corev1.ResourceMemory: resource.MustParse("256Mi"),
},
Limits: corev1.ResourceList{
corev1.ResourceMemory: resource.MustParse("512Mi"),
corev1.ResourceCPU: resource.MustParse("1"),
},
}
)
// See https://github.com/kubernetes/cloud-provider-gcp/blob/ccm/v28.2.1/cluster/gce/gci/configure-helper.sh#L2271 for
// the source of variables that get injected in the GCP CCM build process.
func gcpDeploymentReconciler(data *resources.TemplateData) reconciling.NamedDeploymentReconcilerFactory {
return func() (string, reconciling.DeploymentReconciler) {
return GCPCCMDeploymentName, func(dep *appsv1.Deployment) (*appsv1.Deployment, error) {
dep.Spec.Replicas = resources.Int32(1)
podLabels, err := data.GetPodTemplateLabels(GCPCCMDeploymentName, dep.Spec.Template.Spec.Volumes, nil)
if err != nil {
return nil, err
}
kubernetes.EnsureLabels(&dep.Spec.Template, podLabels)
kubernetes.EnsureAnnotations(&dep.Spec.Template, map[string]string{
resources.ClusterAutoscalerSafeToEvictVolumesAnnotation: "scratch",
})
dep.Spec.Template.Spec.DNSPolicy, dep.Spec.Template.Spec.DNSConfig, err =
resources.UserClusterDNSPolicyAndConfig(data)
if err != nil {
return nil, err
}
ccmVersion := GCPCCMVersion(data.Cluster().Spec.Version)
dep.Spec.Template.Spec.AutomountServiceAccountToken = ptr.To(false)
dep.Spec.Template.Spec.Volumes = append(
getVolumes(data.IsKonnectivityEnabled(), true),
corev1.Volume{
Name: "cloud-credentials",
VolumeSource: corev1.VolumeSource{
Secret: &corev1.SecretVolumeSource{
SecretName: resources.ClusterCloudCredentialsSecretName,
},
},
},
// define a scratch volume to keep the service account JSON file
corev1.Volume{
Name: "scratch",
VolumeSource: corev1.VolumeSource{
EmptyDir: &corev1.EmptyDirVolumeSource{
// explicitly setting this to memory does not just save
// disk space, it also make the pod eligible for the cluster-autoscaler;
// cf. https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler/FAQ.md#what-types-of-pods-can-prevent-ca-from-removing-a-node
Medium: corev1.StorageMediumMemory,
},
},
},
)
dep.Spec.Template.Spec.SecurityContext = &corev1.PodSecurityContext{
SeccompProfile: &corev1.SeccompProfile{
Type: corev1.SeccompProfileTypeRuntimeDefault,
},
}
// The service account is base64 in KKP for legacy reasons (meaning the cloud-credentials
// secret contains "double encoded" data); the CCM takes a plain JSON file and so we inject
// an init container to decode the base64 file.
dep.Spec.Template.Spec.InitContainers = []corev1.Container{
getGCPInitContainer(data),
}
dep.Spec.Template.Spec.Containers = []corev1.Container{
{
Name: ccmContainerName,
Image: registry.Must(data.RewriteImage(resources.RegistryK8S + "/cloud-provider-gcp/cloud-controller-manager:" + ccmVersion)),
Args: []string{
"/go-runner",
"--redirect-stderr=true",
"/cloud-controller-manager",
"--v=2",
fmt.Sprintf("--cloud-config=/etc/kubernetes/cloud/%s", resources.CloudConfigKey),
"--secure-port=10258",
"--use-service-account-credentials",
"--cloud-provider=gce",
"--kubeconfig=/etc/kubernetes/kubeconfig/kubeconfig",
"--authorization-kubeconfig=/etc/kubernetes/kubeconfig/kubeconfig",
"--authentication-kubeconfig=/etc/kubernetes/kubeconfig/kubeconfig",
"--allocate-node-cidrs",
// gkenetworkparamset is disabled by default starting with 1.27.x CCM releases,
// see https://github.com/kubernetes/cloud-provider-gcp/pull/521
// disabling this controller reduces log spam
"--controllers=*,-gkenetworkparamset",
fmt.Sprintf("--cluster-name=%s", data.Cluster().Name),
fmt.Sprintf("--cluster-cidr=%s", data.Cluster().Spec.ClusterNetwork.Pods.GetIPv4CIDR()),
},
Env: append(
getEnvVars(),
corev1.EnvVar{
Name: "GOOGLE_APPLICATION_CREDENTIALS",
Value: "/etc/kubermatic/cloud-credentials/serviceAccount.json",
},
),
LivenessProbe: &corev1.Probe{
ProbeHandler: corev1.ProbeHandler{
HTTPGet: &corev1.HTTPGetAction{
Port: intstr.FromInt(10258),
Scheme: corev1.URISchemeHTTPS,
Path: "/healthz",
},
},
InitialDelaySeconds: 15,
TimeoutSeconds: 15,
// Kubernetes default values, specified so we do not end up in a reconcile loop
FailureThreshold: 3,
PeriodSeconds: 10,
SuccessThreshold: 1,
},
VolumeMounts: append(
getVolumeMounts(true),
corev1.VolumeMount{
Name: "scratch",
MountPath: "/etc/kubermatic/cloud-credentials",
},
),
},
}
defResourceRequirements := map[string]*corev1.ResourceRequirements{
ccmContainerName: gcpResourceRequirements.DeepCopy(),
}
err = resources.SetResourceRequirements(dep.Spec.Template.Spec.Containers, defResourceRequirements, nil, dep.Annotations)
if err != nil {
return nil, fmt.Errorf("failed to set resource requirements: %w", err)
}
return dep, nil
}
}
}
func getGCPInitContainer(data *resources.TemplateData) corev1.Container {
return corev1.Container{
Name: "decode-sa",
Image: registry.Must(data.RewriteImage(resources.RegistryQuay + "/kubermatic/util:2.4.0")),
Command: []string{"/bin/sh"},
Args: []string{
"-c",
"base64 -d /input/serviceAccount > /scratch/serviceAccount.json",
},
VolumeMounts: append(
getVolumeMounts(true),
corev1.VolumeMount{
Name: "cloud-credentials",
MountPath: "/input",
},
corev1.VolumeMount{
Name: "scratch",
MountPath: "/scratch",
},
),
}
}
func GCPCCMVersion(version semver.Semver) string {
// https://github.com/kubernetes/cloud-provider-gcp/tags
// Image promotion is known to be laggy, so you can also check the registry contents directly:
// https://explore.ggcr.dev/?repo=registry.k8s.io%2Fcloud-provider-gcp%2Fcloud-controller-manager
switch version.MajorMinor() {
case v126:
return "v26.2.4"
case v127:
return "v27.1.6"
case v128:
fallthrough
case v129:
fallthrough
default:
return "v28.2.1"
}
}