forked from k3s-io/k3s
-
Notifications
You must be signed in to change notification settings - Fork 0
/
core.go
385 lines (341 loc) · 16.3 KB
/
core.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
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
/*
Copyright 2016 The Kubernetes Authors.
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 app implements a server that runs a set of active
// components. This includes replication controllers, service endpoints and
// nodes.
//
package app
import (
"fmt"
"net"
"strings"
"time"
"k8s.io/klog"
"net/http"
"k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/runtime/schema"
utilfeature "k8s.io/apiserver/pkg/util/feature"
cacheddiscovery "k8s.io/client-go/discovery/cached"
"k8s.io/client-go/dynamic"
clientset "k8s.io/client-go/kubernetes"
csiclientset "k8s.io/csi-api/pkg/client/clientset/versioned"
"k8s.io/kubernetes/pkg/controller"
endpointcontroller "k8s.io/kubernetes/pkg/controller/endpoint"
"k8s.io/kubernetes/pkg/controller/garbagecollector"
namespacecontroller "k8s.io/kubernetes/pkg/controller/namespace"
nodeipamcontroller "k8s.io/kubernetes/pkg/controller/nodeipam"
"k8s.io/kubernetes/pkg/controller/nodeipam/ipam"
lifecyclecontroller "k8s.io/kubernetes/pkg/controller/nodelifecycle"
"k8s.io/kubernetes/pkg/controller/podgc"
replicationcontroller "k8s.io/kubernetes/pkg/controller/replication"
resourcequotacontroller "k8s.io/kubernetes/pkg/controller/resourcequota"
servicecontroller "k8s.io/kubernetes/pkg/controller/service"
serviceaccountcontroller "k8s.io/kubernetes/pkg/controller/serviceaccount"
ttlcontroller "k8s.io/kubernetes/pkg/controller/ttl"
"k8s.io/kubernetes/pkg/controller/volume/attachdetach"
"k8s.io/kubernetes/pkg/controller/volume/expand"
persistentvolumecontroller "k8s.io/kubernetes/pkg/controller/volume/persistentvolume"
"k8s.io/kubernetes/pkg/controller/volume/pvcprotection"
"k8s.io/kubernetes/pkg/controller/volume/pvprotection"
"k8s.io/kubernetes/pkg/features"
"k8s.io/kubernetes/pkg/quota/v1/generic"
quotainstall "k8s.io/kubernetes/pkg/quota/v1/install"
"k8s.io/kubernetes/pkg/util/metrics"
)
func startServiceController(ctx ControllerContext) (http.Handler, bool, error) {
serviceController, err := servicecontroller.New(
ctx.ClientBuilder.ClientOrDie("service-controller"),
ctx.InformerFactory.Core().V1().Services(),
ctx.InformerFactory.Core().V1().Nodes(),
ctx.ComponentConfig.KubeCloudShared.ClusterName,
)
if err != nil {
// This error shouldn't fail. It lives like this as a legacy.
klog.Errorf("Failed to start service controller: %v", err)
return nil, false, nil
}
go serviceController.Run(ctx.Stop, int(ctx.ComponentConfig.ServiceController.ConcurrentServiceSyncs))
return nil, true, nil
}
func startNodeIpamController(ctx ControllerContext) (http.Handler, bool, error) {
var clusterCIDR *net.IPNet = nil
var serviceCIDR *net.IPNet = nil
if !ctx.ComponentConfig.KubeCloudShared.AllocateNodeCIDRs {
return nil, false, nil
}
var err error
if len(strings.TrimSpace(ctx.ComponentConfig.KubeCloudShared.ClusterCIDR)) != 0 {
_, clusterCIDR, err = net.ParseCIDR(ctx.ComponentConfig.KubeCloudShared.ClusterCIDR)
if err != nil {
klog.Warningf("Unsuccessful parsing of cluster CIDR %v: %v", ctx.ComponentConfig.KubeCloudShared.ClusterCIDR, err)
}
}
if len(strings.TrimSpace(ctx.ComponentConfig.NodeIPAMController.ServiceCIDR)) != 0 {
_, serviceCIDR, err = net.ParseCIDR(ctx.ComponentConfig.NodeIPAMController.ServiceCIDR)
if err != nil {
klog.Warningf("Unsuccessful parsing of service CIDR %v: %v", ctx.ComponentConfig.NodeIPAMController.ServiceCIDR, err)
}
}
nodeIpamController, err := nodeipamcontroller.NewNodeIpamController(
ctx.InformerFactory.Core().V1().Nodes(),
ctx.ClientBuilder.ClientOrDie("node-controller"),
clusterCIDR,
serviceCIDR,
int(ctx.ComponentConfig.NodeIPAMController.NodeCIDRMaskSize),
ipam.CIDRAllocatorType(ctx.ComponentConfig.KubeCloudShared.CIDRAllocatorType),
)
if err != nil {
return nil, true, err
}
go nodeIpamController.Run(ctx.Stop)
return nil, true, nil
}
func startNodeLifecycleController(ctx ControllerContext) (http.Handler, bool, error) {
lifecycleController, err := lifecyclecontroller.NewNodeLifecycleController(
ctx.InformerFactory.Core().V1().Pods(),
ctx.InformerFactory.Core().V1().Nodes(),
ctx.InformerFactory.Extensions().V1beta1().DaemonSets(),
ctx.ClientBuilder.ClientOrDie("node-controller"),
ctx.ComponentConfig.KubeCloudShared.NodeMonitorPeriod.Duration,
ctx.ComponentConfig.NodeLifecycleController.NodeStartupGracePeriod.Duration,
ctx.ComponentConfig.NodeLifecycleController.NodeMonitorGracePeriod.Duration,
ctx.ComponentConfig.NodeLifecycleController.PodEvictionTimeout.Duration,
ctx.ComponentConfig.NodeLifecycleController.NodeEvictionRate,
ctx.ComponentConfig.NodeLifecycleController.SecondaryNodeEvictionRate,
ctx.ComponentConfig.NodeLifecycleController.LargeClusterSizeThreshold,
ctx.ComponentConfig.NodeLifecycleController.UnhealthyZoneThreshold,
ctx.ComponentConfig.NodeLifecycleController.EnableTaintManager,
utilfeature.DefaultFeatureGate.Enabled(features.TaintBasedEvictions),
utilfeature.DefaultFeatureGate.Enabled(features.TaintNodesByCondition),
)
if err != nil {
return nil, true, err
}
go lifecycleController.Run(ctx.Stop)
return nil, true, nil
}
func startPersistentVolumeBinderController(ctx ControllerContext) (http.Handler, bool, error) {
params := persistentvolumecontroller.ControllerParameters{
KubeClient: ctx.ClientBuilder.ClientOrDie("persistent-volume-binder"),
SyncPeriod: ctx.ComponentConfig.PersistentVolumeBinderController.PVClaimBinderSyncPeriod.Duration,
VolumePlugins: ProbeControllerVolumePlugins(ctx.ComponentConfig.PersistentVolumeBinderController.VolumeConfiguration),
ClusterName: ctx.ComponentConfig.KubeCloudShared.ClusterName,
VolumeInformer: ctx.InformerFactory.Core().V1().PersistentVolumes(),
ClaimInformer: ctx.InformerFactory.Core().V1().PersistentVolumeClaims(),
ClassInformer: ctx.InformerFactory.Storage().V1().StorageClasses(),
PodInformer: ctx.InformerFactory.Core().V1().Pods(),
NodeInformer: ctx.InformerFactory.Core().V1().Nodes(),
EnableDynamicProvisioning: ctx.ComponentConfig.PersistentVolumeBinderController.VolumeConfiguration.EnableDynamicProvisioning,
}
volumeController, volumeControllerErr := persistentvolumecontroller.NewController(params)
if volumeControllerErr != nil {
return nil, true, fmt.Errorf("failed to construct persistentvolume controller: %v", volumeControllerErr)
}
go volumeController.Run(ctx.Stop)
return nil, true, nil
}
func startAttachDetachController(ctx ControllerContext) (http.Handler, bool, error) {
if ctx.ComponentConfig.AttachDetachController.ReconcilerSyncLoopPeriod.Duration < time.Second {
return nil, true, fmt.Errorf("Duration time must be greater than one second as set via command line option reconcile-sync-loop-period.")
}
csiClientConfig := ctx.ClientBuilder.ConfigOrDie("attachdetach-controller")
// csiClient works with CRDs that support json only
csiClientConfig.ContentType = "application/json"
attachDetachController, attachDetachControllerErr :=
attachdetach.NewAttachDetachController(
ctx.ClientBuilder.ClientOrDie("attachdetach-controller"),
csiclientset.NewForConfigOrDie(csiClientConfig),
ctx.InformerFactory.Core().V1().Pods(),
ctx.InformerFactory.Core().V1().Nodes(),
ctx.InformerFactory.Core().V1().PersistentVolumeClaims(),
ctx.InformerFactory.Core().V1().PersistentVolumes(),
ProbeAttachableVolumePlugins(),
GetDynamicPluginProber(ctx.ComponentConfig.PersistentVolumeBinderController.VolumeConfiguration),
ctx.ComponentConfig.AttachDetachController.DisableAttachDetachReconcilerSync,
ctx.ComponentConfig.AttachDetachController.ReconcilerSyncLoopPeriod.Duration,
attachdetach.DefaultTimerConfig,
)
if attachDetachControllerErr != nil {
return nil, true, fmt.Errorf("failed to start attach/detach controller: %v", attachDetachControllerErr)
}
go attachDetachController.Run(ctx.Stop)
return nil, true, nil
}
func startVolumeExpandController(ctx ControllerContext) (http.Handler, bool, error) {
if utilfeature.DefaultFeatureGate.Enabled(features.ExpandPersistentVolumes) {
expandController, expandControllerErr := expand.NewExpandController(
ctx.ClientBuilder.ClientOrDie("expand-controller"),
ctx.InformerFactory.Core().V1().PersistentVolumeClaims(),
ctx.InformerFactory.Core().V1().PersistentVolumes(),
ProbeExpandableVolumePlugins(ctx.ComponentConfig.PersistentVolumeBinderController.VolumeConfiguration))
if expandControllerErr != nil {
return nil, true, fmt.Errorf("Failed to start volume expand controller : %v", expandControllerErr)
}
go expandController.Run(ctx.Stop)
return nil, true, nil
}
return nil, false, nil
}
func startEndpointController(ctx ControllerContext) (http.Handler, bool, error) {
go endpointcontroller.NewEndpointController(
ctx.InformerFactory.Core().V1().Pods(),
ctx.InformerFactory.Core().V1().Services(),
ctx.InformerFactory.Core().V1().Endpoints(),
ctx.ClientBuilder.ClientOrDie("endpoint-controller"),
).Run(int(ctx.ComponentConfig.EndpointController.ConcurrentEndpointSyncs), ctx.Stop)
return nil, true, nil
}
func startReplicationController(ctx ControllerContext) (http.Handler, bool, error) {
go replicationcontroller.NewReplicationManager(
ctx.InformerFactory.Core().V1().Pods(),
ctx.InformerFactory.Core().V1().ReplicationControllers(),
ctx.ClientBuilder.ClientOrDie("replication-controller"),
replicationcontroller.BurstReplicas,
).Run(int(ctx.ComponentConfig.ReplicationController.ConcurrentRCSyncs), ctx.Stop)
return nil, true, nil
}
func startPodGCController(ctx ControllerContext) (http.Handler, bool, error) {
go podgc.NewPodGC(
ctx.ClientBuilder.ClientOrDie("pod-garbage-collector"),
ctx.InformerFactory.Core().V1().Pods(),
int(ctx.ComponentConfig.PodGCController.TerminatedPodGCThreshold),
).Run(ctx.Stop)
return nil, true, nil
}
func startResourceQuotaController(ctx ControllerContext) (http.Handler, bool, error) {
resourceQuotaControllerClient := ctx.ClientBuilder.ClientOrDie("resourcequota-controller")
discoveryFunc := resourceQuotaControllerClient.Discovery().ServerPreferredNamespacedResources
listerFuncForResource := generic.ListerFuncForResourceFunc(ctx.InformerFactory.ForResource)
quotaConfiguration := quotainstall.NewQuotaConfigurationForControllers(listerFuncForResource)
resourceQuotaControllerOptions := &resourcequotacontroller.ResourceQuotaControllerOptions{
QuotaClient: resourceQuotaControllerClient.CoreV1(),
ResourceQuotaInformer: ctx.InformerFactory.Core().V1().ResourceQuotas(),
ResyncPeriod: controller.StaticResyncPeriodFunc(ctx.ComponentConfig.ResourceQuotaController.ResourceQuotaSyncPeriod.Duration),
InformerFactory: ctx.InformerFactory,
ReplenishmentResyncPeriod: ctx.ResyncPeriod,
DiscoveryFunc: discoveryFunc,
IgnoredResourcesFunc: quotaConfiguration.IgnoredResources,
InformersStarted: ctx.InformersStarted,
Registry: generic.NewRegistry(quotaConfiguration.Evaluators()),
}
if resourceQuotaControllerClient.CoreV1().RESTClient().GetRateLimiter() != nil {
if err := metrics.RegisterMetricAndTrackRateLimiterUsage("resource_quota_controller", resourceQuotaControllerClient.CoreV1().RESTClient().GetRateLimiter()); err != nil {
return nil, true, err
}
}
resourceQuotaController, err := resourcequotacontroller.NewResourceQuotaController(resourceQuotaControllerOptions)
if err != nil {
return nil, false, err
}
go resourceQuotaController.Run(int(ctx.ComponentConfig.ResourceQuotaController.ConcurrentResourceQuotaSyncs), ctx.Stop)
// Periodically the quota controller to detect new resource types
go resourceQuotaController.Sync(discoveryFunc, 30*time.Second, ctx.Stop)
return nil, true, nil
}
func startNamespaceController(ctx ControllerContext) (http.Handler, bool, error) {
// the namespace cleanup controller is very chatty. It makes lots of discovery calls and then it makes lots of delete calls
// the ratelimiter negatively affects its speed. Deleting 100 total items in a namespace (that's only a few of each resource
// including events), takes ~10 seconds by default.
nsKubeconfig := ctx.ClientBuilder.ConfigOrDie("namespace-controller")
nsKubeconfig.QPS *= 20
nsKubeconfig.Burst *= 100
namespaceKubeClient := clientset.NewForConfigOrDie(nsKubeconfig)
dynamicClient, err := dynamic.NewForConfig(nsKubeconfig)
if err != nil {
return nil, true, err
}
discoverResourcesFn := namespaceKubeClient.Discovery().ServerPreferredNamespacedResources
namespaceController := namespacecontroller.NewNamespaceController(
namespaceKubeClient,
dynamicClient,
discoverResourcesFn,
ctx.InformerFactory.Core().V1().Namespaces(),
ctx.ComponentConfig.NamespaceController.NamespaceSyncPeriod.Duration,
v1.FinalizerKubernetes,
)
go namespaceController.Run(int(ctx.ComponentConfig.NamespaceController.ConcurrentNamespaceSyncs), ctx.Stop)
return nil, true, nil
}
func startServiceAccountController(ctx ControllerContext) (http.Handler, bool, error) {
sac, err := serviceaccountcontroller.NewServiceAccountsController(
ctx.InformerFactory.Core().V1().ServiceAccounts(),
ctx.InformerFactory.Core().V1().Namespaces(),
ctx.ClientBuilder.ClientOrDie("service-account-controller"),
serviceaccountcontroller.DefaultServiceAccountsControllerOptions(),
)
if err != nil {
return nil, true, fmt.Errorf("error creating ServiceAccount controller: %v", err)
}
go sac.Run(1, ctx.Stop)
return nil, true, nil
}
func startTTLController(ctx ControllerContext) (http.Handler, bool, error) {
go ttlcontroller.NewTTLController(
ctx.InformerFactory.Core().V1().Nodes(),
ctx.ClientBuilder.ClientOrDie("ttl-controller"),
).Run(5, ctx.Stop)
return nil, true, nil
}
func startGarbageCollectorController(ctx ControllerContext) (http.Handler, bool, error) {
if !ctx.ComponentConfig.GarbageCollectorController.EnableGarbageCollector {
return nil, false, nil
}
gcClientset := ctx.ClientBuilder.ClientOrDie("generic-garbage-collector")
discoveryClient := cacheddiscovery.NewMemCacheClient(gcClientset.Discovery())
config := ctx.ClientBuilder.ConfigOrDie("generic-garbage-collector")
dynamicClient, err := dynamic.NewForConfig(config)
if err != nil {
return nil, true, err
}
// Get an initial set of deletable resources to prime the garbage collector.
deletableResources := garbagecollector.GetDeletableResources(discoveryClient)
ignoredResources := make(map[schema.GroupResource]struct{})
for _, r := range ctx.ComponentConfig.GarbageCollectorController.GCIgnoredResources {
ignoredResources[schema.GroupResource{Group: r.Group, Resource: r.Resource}] = struct{}{}
}
garbageCollector, err := garbagecollector.NewGarbageCollector(
dynamicClient,
ctx.RESTMapper,
deletableResources,
ignoredResources,
ctx.InformerFactory,
ctx.InformersStarted,
)
if err != nil {
return nil, true, fmt.Errorf("Failed to start the generic garbage collector: %v", err)
}
// Start the garbage collector.
workers := int(ctx.ComponentConfig.GarbageCollectorController.ConcurrentGCSyncs)
go garbageCollector.Run(workers, ctx.Stop)
// Periodically refresh the RESTMapper with new discovery information and sync
// the garbage collector.
go garbageCollector.Sync(gcClientset.Discovery(), 30*time.Second, ctx.Stop)
return nil, true, nil
}
func startPVCProtectionController(ctx ControllerContext) (http.Handler, bool, error) {
go pvcprotection.NewPVCProtectionController(
ctx.InformerFactory.Core().V1().PersistentVolumeClaims(),
ctx.InformerFactory.Core().V1().Pods(),
ctx.ClientBuilder.ClientOrDie("pvc-protection-controller"),
utilfeature.DefaultFeatureGate.Enabled(features.StorageObjectInUseProtection),
).Run(1, ctx.Stop)
return nil, true, nil
}
func startPVProtectionController(ctx ControllerContext) (http.Handler, bool, error) {
go pvprotection.NewPVProtectionController(
ctx.InformerFactory.Core().V1().PersistentVolumes(),
ctx.ClientBuilder.ClientOrDie("pv-protection-controller"),
utilfeature.DefaultFeatureGate.Enabled(features.StorageObjectInUseProtection),
).Run(1, ctx.Stop)
return nil, true, nil
}