-
Notifications
You must be signed in to change notification settings - Fork 0
/
types.go
907 lines (870 loc) · 43.7 KB
/
types.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
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
/*
Copyright 2015 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 componentconfig
import (
"fmt"
"sort"
"strings"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/kubernetes/pkg/api"
)
type KubeProxyConfiguration struct {
metav1.TypeMeta
// bindAddress is the IP address for the proxy server to serve on (set to 0.0.0.0
// for all interfaces)
BindAddress string
// clusterCIDR is the CIDR range of the pods in the cluster. It is used to
// bridge traffic coming from outside of the cluster. If not provided,
// no off-cluster bridging will be performed.
ClusterCIDR string
// healthzBindAddress is the IP address for the health check server to serve on,
// defaulting to 127.0.0.1 (set to 0.0.0.0 for all interfaces)
HealthzBindAddress string
// healthzPort is the port to bind the health check server. Use 0 to disable.
HealthzPort int32
// hostnameOverride, if non-empty, will be used as the identity instead of the actual hostname.
HostnameOverride string
// iptablesMasqueradeBit is the bit of the iptables fwmark space to use for SNAT if using
// the pure iptables proxy mode. Values must be within the range [0, 31].
IPTablesMasqueradeBit *int32
// iptablesSyncPeriod is the period that iptables rules are refreshed (e.g. '5s', '1m',
// '2h22m'). Must be greater than 0.
IPTablesSyncPeriod metav1.Duration
// iptablesMinSyncPeriod is the minimum period that iptables rules are refreshed (e.g. '5s', '1m',
// '2h22m').
IPTablesMinSyncPeriod metav1.Duration
// kubeconfigPath is the path to the kubeconfig file with authorization information (the
// master location is set by the master flag).
KubeconfigPath string
// masqueradeAll tells kube-proxy to SNAT everything if using the pure iptables proxy mode.
MasqueradeAll bool
// master is the address of the Kubernetes API server (overrides any value in kubeconfig)
Master string
// oomScoreAdj is the oom-score-adj value for kube-proxy process. Values must be within
// the range [-1000, 1000]
OOMScoreAdj *int32
// mode specifies which proxy mode to use.
Mode ProxyMode
// portRange is the range of host ports (beginPort-endPort, inclusive) that may be consumed
// in order to proxy service traffic. If unspecified (0-0) then ports will be randomly chosen.
PortRange string
// resourceContainer is the absolute name of the resource-only container to create and run
// the Kube-proxy in (Default: /kube-proxy).
ResourceContainer string
// udpIdleTimeout is how long an idle UDP connection will be kept open (e.g. '250ms', '2s').
// Must be greater than 0. Only applicable for proxyMode=userspace.
UDPIdleTimeout metav1.Duration
// conntrackMax is the maximum number of NAT connections to track (0 to
// leave as-is). This takes precedence over conntrackMaxPerCore and conntrackMin.
ConntrackMax int32
// conntrackMaxPerCore is the maximum number of NAT connections to track
// per CPU core (0 to leave the limit as-is and ignore conntrackMin).
ConntrackMaxPerCore int32
// conntrackMin is the minimum value of connect-tracking records to allocate,
// regardless of conntrackMaxPerCore (set conntrackMaxPerCore=0 to leave the limit as-is).
ConntrackMin int32
// conntrackTCPEstablishedTimeout is how long an idle TCP connection will be kept open
// (e.g. '2s'). Must be greater than 0.
ConntrackTCPEstablishedTimeout metav1.Duration
// conntrackTCPCloseWaitTimeout is how long an idle conntrack entry
// in CLOSE_WAIT state will remain in the conntrack
// table. (e.g. '60s'). Must be greater than 0 to set.
ConntrackTCPCloseWaitTimeout metav1.Duration
}
// Currently two modes of proxying are available: 'userspace' (older, stable) or 'iptables'
// (newer, faster). If blank, use the best-available proxy (currently iptables, but may
// change in future versions). If the iptables proxy is selected, regardless of how, but
// the system's kernel or iptables versions are insufficient, this always falls back to the
// userspace proxy.
type ProxyMode string
const (
ProxyModeUserspace ProxyMode = "userspace"
ProxyModeIPTables ProxyMode = "iptables"
)
// HairpinMode denotes how the kubelet should configure networking to handle
// hairpin packets.
type HairpinMode string
// Enum settings for different ways to handle hairpin packets.
const (
// Set the hairpin flag on the veth of containers in the respective
// container runtime.
HairpinVeth = "hairpin-veth"
// Make the container bridge promiscuous. This will force it to accept
// hairpin packets, even if the flag isn't set on ports of the bridge.
PromiscuousBridge = "promiscuous-bridge"
// Neither of the above. If the kubelet is started in this hairpin mode
// and kube-proxy is running in iptables mode, hairpin packets will be
// dropped by the container bridge.
HairpinNone = "none"
)
// TODO: curate the ordering and structure of this config object
type KubeletConfiguration struct {
metav1.TypeMeta
// podManifestPath is the path to the directory containing pod manifests to
// run, or the path to a single manifest file
PodManifestPath string
// syncFrequency is the max period between synchronizing running
// containers and config
SyncFrequency metav1.Duration
// fileCheckFrequency is the duration between checking config files for
// new data
FileCheckFrequency metav1.Duration
// httpCheckFrequency is the duration between checking http for new data
HTTPCheckFrequency metav1.Duration
// manifestURL is the URL for accessing the container manifest
ManifestURL string
// manifestURLHeader is the HTTP header to use when accessing the manifest
// URL, with the key separated from the value with a ':', as in 'key:value'
ManifestURLHeader string
// enableServer enables the Kubelet's server
EnableServer bool
// address is the IP address for the Kubelet to serve on (set to 0.0.0.0
// for all interfaces)
Address string
// port is the port for the Kubelet to serve on.
Port int32
// readOnlyPort is the read-only port for the Kubelet to serve on with
// no authentication/authorization (set to 0 to disable)
ReadOnlyPort int32
// tlsCertFile is the file containing x509 Certificate for HTTPS. (CA cert,
// if any, concatenated after server cert). If tlsCertFile and
// tlsPrivateKeyFile are not provided, a self-signed certificate
// and key are generated for the public address and saved to the directory
// passed to certDir.
TLSCertFile string
// tlsPrivateKeyFile is the ile containing x509 private key matching
// tlsCertFile.
TLSPrivateKeyFile string
// certDirectory is the directory where the TLS certs are located (by
// default /var/run/kubernetes). If tlsCertFile and tlsPrivateKeyFile
// are provided, this flag will be ignored.
CertDirectory string
// authentication specifies how requests to the Kubelet's server are authenticated
Authentication KubeletAuthentication
// authorization specifies how requests to the Kubelet's server are authorized
Authorization KubeletAuthorization
// hostnameOverride is the hostname used to identify the kubelet instead
// of the actual hostname.
HostnameOverride string
// podInfraContainerImage is the image whose network/ipc namespaces
// containers in each pod will use.
PodInfraContainerImage string
// dockerEndpoint is the path to the docker endpoint to communicate with.
DockerEndpoint string
// rootDirectory is the directory path to place kubelet files (volume
// mounts,etc).
RootDirectory string
// seccompProfileRoot is the directory path for seccomp profiles.
SeccompProfileRoot string
// allowPrivileged enables containers to request privileged mode.
// Defaults to false.
AllowPrivileged bool
// hostNetworkSources is a comma-separated list of sources from which the
// Kubelet allows pods to use of host network. Defaults to "*". Valid
// options are "file", "http", "api", and "*" (all sources).
HostNetworkSources []string
// hostPIDSources is a comma-separated list of sources from which the
// Kubelet allows pods to use the host pid namespace. Defaults to "*".
HostPIDSources []string
// hostIPCSources is a comma-separated list of sources from which the
// Kubelet allows pods to use the host ipc namespace. Defaults to "*".
HostIPCSources []string
// registryPullQPS is the limit of registry pulls per second. If 0,
// unlimited. Set to 0 for no limit. Defaults to 5.0.
RegistryPullQPS int32
// registryBurst is the maximum size of a bursty pulls, temporarily allows
// pulls to burst to this number, while still not exceeding registryQps.
// Only used if registryQPS > 0.
RegistryBurst int32
// eventRecordQPS is the maximum event creations per second. If 0, there
// is no limit enforced.
EventRecordQPS int32
// eventBurst is the maximum size of a bursty event records, temporarily
// allows event records to burst to this number, while still not exceeding
// event-qps. Only used if eventQps > 0
EventBurst int32
// enableDebuggingHandlers enables server endpoints for log collection
// and local running of containers and commands
EnableDebuggingHandlers bool
// enableContentionProfiling enables lock contention profiling, if enableDebuggingHandlers is true.
EnableContentionProfiling bool
// minimumGCAge is the minimum age for a finished container before it is
// garbage collected.
MinimumGCAge metav1.Duration
// maxPerPodContainerCount is the maximum number of old instances to
// retain per container. Each container takes up some disk space.
MaxPerPodContainerCount int32
// maxContainerCount is the maximum number of old instances of containers
// to retain globally. Each container takes up some disk space.
MaxContainerCount int32
// cAdvisorPort is the port of the localhost cAdvisor endpoint
CAdvisorPort int32
// healthzPort is the port of the localhost healthz endpoint
HealthzPort int32
// healthzBindAddress is the IP address for the healthz server to serve
// on.
HealthzBindAddress string
// oomScoreAdj is The oom-score-adj value for kubelet process. Values
// must be within the range [-1000, 1000].
OOMScoreAdj int32
// registerNode enables automatic registration with the apiserver.
RegisterNode bool
// clusterDomain is the DNS domain for this cluster. If set, kubelet will
// configure all containers to search this domain in addition to the
// host's search domains.
ClusterDomain string
// masterServiceNamespace is The namespace from which the kubernetes
// master services should be injected into pods.
MasterServiceNamespace string
// clusterDNS is a list of IP address for a cluster DNS server. If set,
// kubelet will configure all containers to use this for DNS resolution
// instead of the host's DNS servers
ClusterDNS []string
// streamingConnectionIdleTimeout is the maximum time a streaming connection
// can be idle before the connection is automatically closed.
StreamingConnectionIdleTimeout metav1.Duration
// nodeStatusUpdateFrequency is the frequency that kubelet posts node
// status to master. Note: be cautious when changing the constant, it
// must work with nodeMonitorGracePeriod in nodecontroller.
NodeStatusUpdateFrequency metav1.Duration
// imageMinimumGCAge is the minimum age for an unused image before it is
// garbage collected.
ImageMinimumGCAge metav1.Duration
// imageGCHighThresholdPercent is the percent of disk usage after which
// image garbage collection is always run.
ImageGCHighThresholdPercent int32
// imageGCLowThresholdPercent is the percent of disk usage before which
// image garbage collection is never run. Lowest disk usage to garbage
// collect to.
ImageGCLowThresholdPercent int32
// lowDiskSpaceThresholdMB is the absolute free disk space, in MB, to
// maintain. When disk space falls below this threshold, new pods would
// be rejected.
LowDiskSpaceThresholdMB int32
// How frequently to calculate and cache volume disk usage for all pods
VolumeStatsAggPeriod metav1.Duration
// networkPluginName is the name of the network plugin to be invoked for
// various events in kubelet/pod lifecycle
NetworkPluginName string
// networkPluginMTU is the MTU to be passed to the network plugin,
// and overrides the default MTU for cases where it cannot be automatically
// computed (such as IPSEC).
NetworkPluginMTU int32
// networkPluginDir is the full path of the directory in which to search
// for network plugins (and, for backwards-compat, CNI config files)
NetworkPluginDir string
// CNIConfDir is the full path of the directory in which to search for
// CNI config files
CNIConfDir string
// CNIBinDir is the full path of the directory in which to search for
// CNI plugin binaries
CNIBinDir string
// volumePluginDir is the full path of the directory in which to search
// for additional third party volume plugins
VolumePluginDir string
// cloudProvider is the provider for cloud services.
// +optional
CloudProvider string
// cloudConfigFile is the path to the cloud provider configuration file.
// +optional
CloudConfigFile string
// KubeletCgroups is the absolute name of cgroups to isolate the kubelet in.
// +optional
KubeletCgroups string
// Enable QoS based Cgroup hierarchy: top level cgroups for QoS Classes
// And all Burstable and BestEffort pods are brought up under their
// specific top level QoS cgroup.
// +optional
CgroupsPerQOS bool
// driver that the kubelet uses to manipulate cgroups on the host (cgroupfs or systemd)
// +optional
CgroupDriver string
// Cgroups that container runtime is expected to be isolated in.
// +optional
RuntimeCgroups string
// SystemCgroups is absolute name of cgroups in which to place
// all non-kernel processes that are not already in a container. Empty
// for no container. Rolling back the flag requires a reboot.
// +optional
SystemCgroups string
// CgroupRoot is the root cgroup to use for pods.
// If CgroupsPerQOS is enabled, this is the root of the QoS cgroup hierarchy.
// +optional
CgroupRoot string
// containerRuntime is the container runtime to use.
ContainerRuntime string
// remoteRuntimeEndpoint is the endpoint of remote runtime service
RemoteRuntimeEndpoint string
// remoteImageEndpoint is the endpoint of remote image service
RemoteImageEndpoint string
// runtimeRequestTimeout is the timeout for all runtime requests except long running
// requests - pull, logs, exec and attach.
// +optional
RuntimeRequestTimeout metav1.Duration
// If no pulling progress is made before the deadline imagePullProgressDeadline,
// the image pulling will be cancelled. Defaults to 1m0s.
// +optional
ImagePullProgressDeadline metav1.Duration
// rktPath is the path of rkt binary. Leave empty to use the first rkt in
// $PATH.
// +optional
RktPath string
// experimentalMounterPath is the path of mounter binary. Leave empty to use the default mount path
ExperimentalMounterPath string
// rktApiEndpoint is the endpoint of the rkt API service to communicate with.
// +optional
RktAPIEndpoint string
// rktStage1Image is the image to use as stage1. Local paths and
// http/https URLs are supported.
// +optional
RktStage1Image string
// lockFilePath is the path that kubelet will use to as a lock file.
// It uses this file as a lock to synchronize with other kubelet processes
// that may be running.
LockFilePath string
// ExitOnLockContention is a flag that signifies to the kubelet that it is running
// in "bootstrap" mode. This requires that 'LockFilePath' has been set.
// This will cause the kubelet to listen to inotify events on the lock file,
// releasing it and exiting when another process tries to open that file.
ExitOnLockContention bool
// How should the kubelet configure the container bridge for hairpin packets.
// Setting this flag allows endpoints in a Service to loadbalance back to
// themselves if they should try to access their own Service. Values:
// "promiscuous-bridge": make the container bridge promiscuous.
// "hairpin-veth": set the hairpin flag on container veth interfaces.
// "none": do nothing.
// Generally, one must set --hairpin-mode=veth-flag to achieve hairpin NAT,
// because promiscous-bridge assumes the existence of a container bridge named cbr0.
HairpinMode string
// The node has babysitter process monitoring docker and kubelet.
BabysitDaemons bool
// maxPods is the number of pods that can run on this Kubelet.
MaxPods int32
// dockerExecHandlerName is the handler to use when executing a command
// in a container. Valid values are 'native' and 'nsenter'. Defaults to
// 'native'.
DockerExecHandlerName string
// The CIDR to use for pod IP addresses, only used in standalone mode.
// In cluster mode, this is obtained from the master.
PodCIDR string
// ResolverConfig is the resolver configuration file used as the basis
// for the container DNS resolution configuration."), []
ResolverConfig string
// cpuCFSQuota is Enable CPU CFS quota enforcement for containers that
// specify CPU limits
CPUCFSQuota bool
// containerized should be set to true if kubelet is running in a container.
Containerized bool
// maxOpenFiles is Number of files that can be opened by Kubelet process.
MaxOpenFiles int64
// registerSchedulable tells the kubelet to register the node as
// schedulable. Won't have any effect if register-node is false.
// DEPRECATED: use registerWithTaints instead
RegisterSchedulable bool
// registerWithTaints are an array of taints to add to a node object when
// the kubelet registers itself. This only takes effect when registerNode
// is true and upon the initial registration of the node.
RegisterWithTaints []api.Taint
// contentType is contentType of requests sent to apiserver.
ContentType string
// kubeAPIQPS is the QPS to use while talking with kubernetes apiserver
KubeAPIQPS int32
// kubeAPIBurst is the burst to allow while talking with kubernetes
// apiserver
KubeAPIBurst int32
// serializeImagePulls when enabled, tells the Kubelet to pull images one
// at a time. We recommend *not* changing the default value on nodes that
// run docker daemon with version < 1.9 or an Aufs storage backend.
// Issue #10959 has more details.
SerializeImagePulls bool
// outOfDiskTransitionFrequency is duration for which the kubelet has to
// wait before transitioning out of out-of-disk node condition status.
// +optional
OutOfDiskTransitionFrequency metav1.Duration
// nodeIP is IP address of the node. If set, kubelet will use this IP
// address for the node.
// +optional
NodeIP string
// nodeLabels to add when registering the node in the cluster.
NodeLabels map[string]string
// nonMasqueradeCIDR configures masquerading: traffic to IPs outside this range will use IP masquerade.
NonMasqueradeCIDR string
// enable gathering custom metrics.
EnableCustomMetrics bool
// Comma-delimited list of hard eviction expressions. For example, 'memory.available<300Mi'.
// +optional
EvictionHard string
// Comma-delimited list of soft eviction expressions. For example, 'memory.available<300Mi'.
// +optional
EvictionSoft string
// Comma-delimeted list of grace periods for each soft eviction signal. For example, 'memory.available=30s'.
// +optional
EvictionSoftGracePeriod string
// Duration for which the kubelet has to wait before transitioning out of an eviction pressure condition.
// +optional
EvictionPressureTransitionPeriod metav1.Duration
// Maximum allowed grace period (in seconds) to use when terminating pods in response to a soft eviction threshold being met.
// +optional
EvictionMaxPodGracePeriod int32
// Comma-delimited list of minimum reclaims (e.g. imagefs.available=2Gi) that describes the minimum amount of resource the kubelet will reclaim when performing a pod eviction if that resource is under pressure.
// +optional
EvictionMinimumReclaim string
// If enabled, the kubelet will integrate with the kernel memcg notification to determine if memory eviction thresholds are crossed rather than polling.
// +optional
ExperimentalKernelMemcgNotification bool
// Maximum number of pods per core. Cannot exceed MaxPods
PodsPerCore int32
// enableControllerAttachDetach enables the Attach/Detach controller to
// manage attachment/detachment of volumes scheduled to this node, and
// disables kubelet from executing any attach/detach operations
EnableControllerAttachDetach bool
// A set of ResourceName=Percentage (e.g. memory=50%) pairs that describe
// how pod resource requests are reserved at the QoS level.
// Currently only memory is supported. [default=none]"
ExperimentalQOSReserved ConfigurationMap
// Default behaviour for kernel tuning
ProtectKernelDefaults bool
// If true, Kubelet ensures a set of iptables rules are present on host.
// These rules will serve as utility for various components, e.g. kube-proxy.
// The rules will be created based on IPTablesMasqueradeBit and IPTablesDropBit.
MakeIPTablesUtilChains bool
// iptablesMasqueradeBit is the bit of the iptables fwmark space to use for SNAT
// Values must be within the range [0, 31].
// Warning: Please match the value of corresponding parameter in kube-proxy
// TODO: clean up IPTablesMasqueradeBit in kube-proxy
IPTablesMasqueradeBit int32
// iptablesDropBit is the bit of the iptables fwmark space to use for dropping packets. Kubelet will ensure iptables mark and drop rules.
// Values must be within the range [0, 31]. Must be different from IPTablesMasqueradeBit
IPTablesDropBit int32
// Whitelist of unsafe sysctls or sysctl patterns (ending in *).
// +optional
AllowedUnsafeSysctls []string
// featureGates is a string of comma-separated key=value pairs that describe feature
// gates for alpha/experimental features.
FeatureGates string
// Enable Container Runtime Interface (CRI) integration.
// +optional
EnableCRI bool
// TODO(#34726:1.8.0): Remove the opt-in for failing when swap is enabled.
// Tells the Kubelet to fail to start if swap is enabled on the node.
ExperimentalFailSwapOn bool
// This flag, if set, enables a check prior to mount operations to verify that the required components
// (binaries, etc.) to mount the volume are available on the underlying node. If the check is enabled
// and fails the mount operation fails.
ExperimentalCheckNodeCapabilitiesBeforeMount bool
// This flag, if set, instructs the kubelet to keep volumes from terminated pods mounted to the node.
// This can be useful for debugging volume related issues.
KeepTerminatedPodVolumes bool
/* following flags are meant for Node Allocatable */
// A set of ResourceName=ResourceQuantity (e.g. cpu=200m,memory=150G) pairs
// that describe resources reserved for non-kubernetes components.
// Currently only cpu and memory are supported. [default=none]
// See http://kubernetes.io/docs/user-guide/compute-resources for more detail.
SystemReserved ConfigurationMap
// A set of ResourceName=ResourceQuantity (e.g. cpu=200m,memory=150G) pairs
// that describe resources reserved for kubernetes system components.
// Currently only cpu and memory are supported. [default=none]
// See http://kubernetes.io/docs/user-guide/compute-resources for more detail.
KubeReserved ConfigurationMap
// This flag helps kubelet identify absolute name of top level cgroup used to enforce `SystemReserved` compute resource reservation for OS system daemons.
// Refer to [Node Allocatable](https://github.com/kubernetes/community/blob/master/contributors/design-proposals/node-allocatable.md) doc for more information.
SystemReservedCgroup string
// This flag helps kubelet identify absolute name of top level cgroup used to enforce `KubeReserved` compute resource reservation for Kubernetes node system daemons.
// Refer to [Node Allocatable](https://github.com/kubernetes/community/blob/master/contributors/design-proposals/node-allocatable.md) doc for more information.
KubeReservedCgroup string
// This flag specifies the various Node Allocatable enforcements that Kubelet needs to perform.
// This flag accepts a list of options. Acceptible options are `pods`, `system-reserved` & `kube-reserved`.
// Refer to [Node Allocatable](https://github.com/kubernetes/community/blob/master/contributors/design-proposals/node-allocatable.md) doc for more information.
EnforceNodeAllocatable []string
// This flag, if set, will avoid including `EvictionHard` limits while computing Node Allocatable.
// Refer to [Node Allocatable](https://github.com/kubernetes/community/blob/master/contributors/design-proposals/node-allocatable.md) doc for more information.
ExperimentalNodeAllocatableIgnoreEvictionThreshold bool
}
type KubeletAuthorizationMode string
const (
// KubeletAuthorizationModeAlwaysAllow authorizes all authenticated requests
KubeletAuthorizationModeAlwaysAllow KubeletAuthorizationMode = "AlwaysAllow"
// KubeletAuthorizationModeWebhook uses the SubjectAccessReview API to determine authorization
KubeletAuthorizationModeWebhook KubeletAuthorizationMode = "Webhook"
)
type KubeletAuthorization struct {
// mode is the authorization mode to apply to requests to the kubelet server.
// Valid values are AlwaysAllow and Webhook.
// Webhook mode uses the SubjectAccessReview API to determine authorization.
Mode KubeletAuthorizationMode
// webhook contains settings related to Webhook authorization.
Webhook KubeletWebhookAuthorization
}
type KubeletWebhookAuthorization struct {
// cacheAuthorizedTTL is the duration to cache 'authorized' responses from the webhook authorizer.
CacheAuthorizedTTL metav1.Duration
// cacheUnauthorizedTTL is the duration to cache 'unauthorized' responses from the webhook authorizer.
CacheUnauthorizedTTL metav1.Duration
}
type KubeletAuthentication struct {
// x509 contains settings related to x509 client certificate authentication
X509 KubeletX509Authentication
// webhook contains settings related to webhook bearer token authentication
Webhook KubeletWebhookAuthentication
// anonymous contains settings related to anonymous authentication
Anonymous KubeletAnonymousAuthentication
}
type KubeletX509Authentication struct {
// clientCAFile is the path to a PEM-encoded certificate bundle. If set, any request presenting a client certificate
// signed by one of the authorities in the bundle is authenticated with a username corresponding to the CommonName,
// and groups corresponding to the Organization in the client certificate.
ClientCAFile string
}
type KubeletWebhookAuthentication struct {
// enabled allows bearer token authentication backed by the tokenreviews.authentication.k8s.io API
Enabled bool
// cacheTTL enables caching of authentication results
CacheTTL metav1.Duration
}
type KubeletAnonymousAuthentication struct {
// enabled allows anonymous requests to the kubelet server.
// Requests that are not rejected by another authentication method are treated as anonymous requests.
// Anonymous requests have a username of system:anonymous, and a group name of system:unauthenticated.
Enabled bool
}
type KubeSchedulerConfiguration struct {
metav1.TypeMeta
// port is the port that the scheduler's http service runs on.
Port int32
// address is the IP address to serve on.
Address string
// algorithmProvider is the scheduling algorithm provider to use.
AlgorithmProvider string
// policyConfigFile is the filepath to the scheduler policy configuration.
PolicyConfigFile string
// enableProfiling enables profiling via web interface.
EnableProfiling bool
// enableContentionProfiling enables lock contention profiling, if enableProfiling is true.
EnableContentionProfiling bool
// contentType is contentType of requests sent to apiserver.
ContentType string
// kubeAPIQPS is the QPS to use while talking with kubernetes apiserver.
KubeAPIQPS float32
// kubeAPIBurst is the QPS burst to use while talking with kubernetes apiserver.
KubeAPIBurst int32
// schedulerName is name of the scheduler, used to select which pods
// will be processed by this scheduler, based on pod's "spec.SchedulerName".
SchedulerName string
// RequiredDuringScheduling affinity is not symmetric, but there is an implicit PreferredDuringScheduling affinity rule
// corresponding to every RequiredDuringScheduling affinity rule.
// HardPodAffinitySymmetricWeight represents the weight of implicit PreferredDuringScheduling affinity rule, in the range 0-100.
HardPodAffinitySymmetricWeight int
// Indicate the "all topologies" set for empty topologyKey when it's used for PreferredDuringScheduling pod anti-affinity.
// DEPRECATED: This is no longer used.
FailureDomains string
// leaderElection defines the configuration of leader election client.
LeaderElection LeaderElectionConfiguration
}
// LeaderElectionConfiguration defines the configuration of leader election
// clients for components that can run with leader election enabled.
type LeaderElectionConfiguration struct {
// leaderElect enables a leader election client to gain leadership
// before executing the main loop. Enable this when running replicated
// components for high availability.
LeaderElect bool
// leaseDuration is the duration that non-leader candidates will wait
// after observing a leadership renewal until attempting to acquire
// leadership of a led but unrenewed leader slot. This is effectively the
// maximum duration that a leader can be stopped before it is replaced
// by another candidate. This is only applicable if leader election is
// enabled.
LeaseDuration metav1.Duration
// renewDeadline is the interval between attempts by the acting master to
// renew a leadership slot before it stops leading. This must be less
// than or equal to the lease duration. This is only applicable if leader
// election is enabled.
RenewDeadline metav1.Duration
// retryPeriod is the duration the clients should wait between attempting
// acquisition and renewal of a leadership. This is only applicable if
// leader election is enabled.
RetryPeriod metav1.Duration
}
type KubeControllerManagerConfiguration struct {
metav1.TypeMeta
// Controllers is the list of controllers to enable or disable
// '*' means "all enabled by default controllers"
// 'foo' means "enable 'foo'"
// '-foo' means "disable 'foo'"
// first item for a particular name wins
Controllers []string
// port is the port that the controller-manager's http service runs on.
Port int32
// address is the IP address to serve on (set to 0.0.0.0 for all interfaces).
Address string
// useServiceAccountCredentials indicates whether controllers should be run with
// individual service account credentials.
UseServiceAccountCredentials bool
// cloudProvider is the provider for cloud services.
CloudProvider string
// cloudConfigFile is the path to the cloud provider configuration file.
CloudConfigFile string
// concurrentEndpointSyncs is the number of endpoint syncing operations
// that will be done concurrently. Larger number = faster endpoint updating,
// but more CPU (and network) load.
ConcurrentEndpointSyncs int32
// concurrentRSSyncs is the number of replica sets that are allowed to sync
// concurrently. Larger number = more responsive replica management, but more
// CPU (and network) load.
ConcurrentRSSyncs int32
// concurrentRCSyncs is the number of replication controllers that are
// allowed to sync concurrently. Larger number = more responsive replica
// management, but more CPU (and network) load.
ConcurrentRCSyncs int32
// concurrentServiceSyncs is the number of services that are
// allowed to sync concurrently. Larger number = more responsive service
// management, but more CPU (and network) load.
ConcurrentServiceSyncs int32
// concurrentResourceQuotaSyncs is the number of resource quotas that are
// allowed to sync concurrently. Larger number = more responsive quota
// management, but more CPU (and network) load.
ConcurrentResourceQuotaSyncs int32
// concurrentDeploymentSyncs is the number of deployment objects that are
// allowed to sync concurrently. Larger number = more responsive deployments,
// but more CPU (and network) load.
ConcurrentDeploymentSyncs int32
// concurrentDaemonSetSyncs is the number of daemonset objects that are
// allowed to sync concurrently. Larger number = more responsive daemonset,
// but more CPU (and network) load.
ConcurrentDaemonSetSyncs int32
// concurrentJobSyncs is the number of job objects that are
// allowed to sync concurrently. Larger number = more responsive jobs,
// but more CPU (and network) load.
ConcurrentJobSyncs int32
// concurrentNamespaceSyncs is the number of namespace objects that are
// allowed to sync concurrently.
ConcurrentNamespaceSyncs int32
// concurrentSATokenSyncs is the number of service account token syncing operations
// that will be done concurrently.
ConcurrentSATokenSyncs int32
// lookupCacheSizeForRC is the size of lookup cache for replication controllers.
// Larger number = more responsive replica management, but more MEM load.
// TODO(#43388): Remove the following flag 6 months after v1.6.0 is released.
// DEPRECATED: This is no longer used.
LookupCacheSizeForRC int32
// lookupCacheSizeForRS is the size of lookup cache for replicatsets.
// Larger number = more responsive replica management, but more MEM load.
// TODO(#43388): Remove the following flag 6 months after v1.6.0 is released.
// DEPRECATED: This is no longer used.
LookupCacheSizeForRS int32
// lookupCacheSizeForDaemonSet is the size of lookup cache for daemonsets.
// Larger number = more responsive daemonset, but more MEM load.
// TODO(#43388): Remove the following flag 6 months after v1.6.0 is released.
// DEPRECATED: This is no longer used.
LookupCacheSizeForDaemonSet int32
// serviceSyncPeriod is the period for syncing services with their external
// load balancers.
ServiceSyncPeriod metav1.Duration
// nodeSyncPeriod is the period for syncing nodes from cloudprovider. Longer
// periods will result in fewer calls to cloud provider, but may delay addition
// of new nodes to cluster.
NodeSyncPeriod metav1.Duration
// routeReconciliationPeriod is the period for reconciling routes created for Nodes by cloud provider..
RouteReconciliationPeriod metav1.Duration
// resourceQuotaSyncPeriod is the period for syncing quota usage status
// in the system.
ResourceQuotaSyncPeriod metav1.Duration
// namespaceSyncPeriod is the period for syncing namespace life-cycle
// updates.
NamespaceSyncPeriod metav1.Duration
// pvClaimBinderSyncPeriod is the period for syncing persistent volumes
// and persistent volume claims.
PVClaimBinderSyncPeriod metav1.Duration
// minResyncPeriod is the resync period in reflectors; will be random between
// minResyncPeriod and 2*minResyncPeriod.
MinResyncPeriod metav1.Duration
// terminatedPodGCThreshold is the number of terminated pods that can exist
// before the terminated pod garbage collector starts deleting terminated pods.
// If <= 0, the terminated pod garbage collector is disabled.
TerminatedPodGCThreshold int32
// horizontalPodAutoscalerSyncPeriod is the period for syncing the number of
// pods in horizontal pod autoscaler.
HorizontalPodAutoscalerSyncPeriod metav1.Duration
// deploymentControllerSyncPeriod is the period for syncing the deployments.
DeploymentControllerSyncPeriod metav1.Duration
// podEvictionTimeout is the grace period for deleting pods on failed nodes.
PodEvictionTimeout metav1.Duration
// DEPRECATED: deletingPodsQps is the number of nodes per second on which pods are deleted in
// case of node failure.
DeletingPodsQps float32
// DEPRECATED: deletingPodsBurst is the number of nodes on which pods are bursty deleted in
// case of node failure. For more details look into RateLimiter.
DeletingPodsBurst int32
// nodeMontiorGracePeriod is the amount of time which we allow a running node to be
// unresponsive before marking it unhealthy. Must be N times more than kubelet's
// nodeStatusUpdateFrequency, where N means number of retries allowed for kubelet
// to post node status.
NodeMonitorGracePeriod metav1.Duration
// registerRetryCount is the number of retries for initial node registration.
// Retry interval equals node-sync-period.
RegisterRetryCount int32
// nodeStartupGracePeriod is the amount of time which we allow starting a node to
// be unresponsive before marking it unhealthy.
NodeStartupGracePeriod metav1.Duration
// nodeMonitorPeriod is the period for syncing NodeStatus in NodeController.
NodeMonitorPeriod metav1.Duration
// serviceAccountKeyFile is the filename containing a PEM-encoded private RSA key
// used to sign service account tokens.
ServiceAccountKeyFile string
// clusterSigningCertFile is the filename containing a PEM-encoded
// X509 CA certificate used to issue cluster-scoped certificates
ClusterSigningCertFile string
// clusterSigningCertFile is the filename containing a PEM-encoded
// RSA or ECDSA private key used to issue cluster-scoped certificates
ClusterSigningKeyFile string
// approveAllKubeletCSRs tells the CSR controller to approve all CSRs originating
// from the kubelet bootstrapping group automatically.
// WARNING: this grants all users with access to the certificates API group
// the ability to create credentials for any user that has access to the boostrapping
// user's credentials.
ApproveAllKubeletCSRsForGroup string
// enableProfiling enables profiling via web interface host:port/debug/pprof/
EnableProfiling bool
// enableContentionProfiling enables lock contention profiling, if enableProfiling is true.
EnableContentionProfiling bool
// clusterName is the instance prefix for the cluster.
ClusterName string
// clusterCIDR is CIDR Range for Pods in cluster.
ClusterCIDR string
// serviceCIDR is CIDR Range for Services in cluster.
ServiceCIDR string
// NodeCIDRMaskSize is the mask size for node cidr in cluster.
NodeCIDRMaskSize int32
// allocateNodeCIDRs enables CIDRs for Pods to be allocated and, if
// ConfigureCloudRoutes is true, to be set on the cloud provider.
AllocateNodeCIDRs bool
// configureCloudRoutes enables CIDRs allocated with allocateNodeCIDRs
// to be configured on the cloud provider.
ConfigureCloudRoutes bool
// rootCAFile is the root certificate authority will be included in service
// account's token secret. This must be a valid PEM-encoded CA bundle.
RootCAFile string
// contentType is contentType of requests sent to apiserver.
ContentType string
// kubeAPIQPS is the QPS to use while talking with kubernetes apiserver.
KubeAPIQPS float32
// kubeAPIBurst is the burst to use while talking with kubernetes apiserver.
KubeAPIBurst int32
// leaderElection defines the configuration of leader election client.
LeaderElection LeaderElectionConfiguration
// volumeConfiguration holds configuration for volume related features.
VolumeConfiguration VolumeConfiguration
// How long to wait between starting controller managers
ControllerStartInterval metav1.Duration
// enables the generic garbage collector. MUST be synced with the
// corresponding flag of the kube-apiserver. WARNING: the generic garbage
// collector is an alpha feature.
EnableGarbageCollector bool
// concurrentGCSyncs is the number of garbage collector workers that are
// allowed to sync concurrently.
ConcurrentGCSyncs int32
// nodeEvictionRate is the number of nodes per second on which pods are deleted in case of node failure when a zone is healthy
NodeEvictionRate float32
// secondaryNodeEvictionRate is the number of nodes per second on which pods are deleted in case of node failure when a zone is unhealty
SecondaryNodeEvictionRate float32
// secondaryNodeEvictionRate is implicitly overridden to 0 for clusters smaller than or equal to largeClusterSizeThreshold
LargeClusterSizeThreshold int32
// Zone is treated as unhealthy in nodeEvictionRate and secondaryNodeEvictionRate when at least
// unhealthyZoneThreshold (no less than 3) of Nodes in the zone are NotReady
UnhealthyZoneThreshold float32
// Reconciler runs a periodic loop to reconcile the desired state of the with
// the actual state of the world by triggering attach detach operations.
// This flag enables or disables reconcile. Is false by default, and thus enabled.
DisableAttachDetachReconcilerSync bool
// ReconcilerSyncLoopPeriod is the amount of time the reconciler sync states loop
// wait between successive executions. Is set to 5 sec by default.
ReconcilerSyncLoopPeriod metav1.Duration
// If set to true enables NoExecute Taints and will evict all not-tolerating
// Pod running on Nodes tainted with this kind of Taints.
EnableTaintManager bool
// HorizontalPodAutoscalerUseRESTClients causes the HPA controller to use REST clients
// through the kube-aggregator when enabled, instead of using the legacy metrics client
// through the API server proxy.
HorizontalPodAutoscalerUseRESTClients bool
}
// VolumeConfiguration contains *all* enumerated flags meant to configure all volume
// plugins. From this config, the controller-manager binary will create many instances of
// volume.VolumeConfig, each containing only the configuration needed for that plugin which
// are then passed to the appropriate plugin. The ControllerManager binary is the only part
// of the code which knows what plugins are supported and which flags correspond to each plugin.
type VolumeConfiguration struct {
// enableHostPathProvisioning enables HostPath PV provisioning when running without a
// cloud provider. This allows testing and development of provisioning features. HostPath
// provisioning is not supported in any way, won't work in a multi-node cluster, and
// should not be used for anything other than testing or development.
EnableHostPathProvisioning bool
// enableDynamicProvisioning enables the provisioning of volumes when running within an environment
// that supports dynamic provisioning. Defaults to true.
EnableDynamicProvisioning bool
// persistentVolumeRecyclerConfiguration holds configuration for persistent volume plugins.
PersistentVolumeRecyclerConfiguration PersistentVolumeRecyclerConfiguration
// volumePluginDir is the full path of the directory in which the flex
// volume plugin should search for additional third party volume plugins
FlexVolumePluginDir string
}
type PersistentVolumeRecyclerConfiguration struct {
// maximumRetry is number of retries the PV recycler will execute on failure to recycle
// PV.
MaximumRetry int32
// minimumTimeoutNFS is the minimum ActiveDeadlineSeconds to use for an NFS Recycler
// pod.
MinimumTimeoutNFS int32
// podTemplateFilePathNFS is the file path to a pod definition used as a template for
// NFS persistent volume recycling
PodTemplateFilePathNFS string
// incrementTimeoutNFS is the increment of time added per Gi to ActiveDeadlineSeconds
// for an NFS scrubber pod.
IncrementTimeoutNFS int32
// podTemplateFilePathHostPath is the file path to a pod definition used as a template for
// HostPath persistent volume recycling. This is for development and testing only and
// will not work in a multi-node cluster.
PodTemplateFilePathHostPath string
// minimumTimeoutHostPath is the minimum ActiveDeadlineSeconds to use for a HostPath
// Recycler pod. This is for development and testing only and will not work in a multi-node
// cluster.
MinimumTimeoutHostPath int32
// incrementTimeoutHostPath is the increment of time added per Gi to ActiveDeadlineSeconds
// for a HostPath scrubber pod. This is for development and testing only and will not work
// in a multi-node cluster.
IncrementTimeoutHostPath int32
}
type ConfigurationMap map[string]string
func (m *ConfigurationMap) String() string {
pairs := []string{}
for k, v := range *m {
pairs = append(pairs, fmt.Sprintf("%s=%s", k, v))
}
sort.Strings(pairs)
return strings.Join(pairs, ",")
}
func (m *ConfigurationMap) Set(value string) error {
for _, s := range strings.Split(value, ",") {
if len(s) == 0 {
continue
}
arr := strings.SplitN(s, "=", 2)
if len(arr) == 2 {
(*m)[strings.TrimSpace(arr[0])] = strings.TrimSpace(arr[1])
} else {
(*m)[strings.TrimSpace(arr[0])] = ""
}
}
return nil
}
func (*ConfigurationMap) Type() string {
return "mapStringString"
}