-
Notifications
You must be signed in to change notification settings - Fork 4.6k
/
populate_cluster_spec.go
403 lines (344 loc) · 15.2 KB
/
populate_cluster_spec.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
/*
Copyright 2019 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 cloudup
import (
"context"
"fmt"
"net"
"strings"
"k8s.io/klog/v2"
kopsapi "k8s.io/kops/pkg/apis/kops"
"k8s.io/kops/pkg/apis/kops/util"
"k8s.io/kops/pkg/apis/kops/validation"
"k8s.io/kops/pkg/assets"
"k8s.io/kops/pkg/client/simple"
"k8s.io/kops/pkg/model/components"
"k8s.io/kops/pkg/model/components/etcdmanager"
"k8s.io/kops/upup/pkg/fi"
"k8s.io/kops/upup/pkg/fi/loader"
"k8s.io/kops/util/pkg/reflectutils"
"k8s.io/kops/util/pkg/vfs"
)
type populateClusterSpec struct {
cloud fi.Cloud
// InputCluster is the api object representing the whole cluster, as input by the user
// We build it up into a complete config, but we write the values as input
InputCluster *kopsapi.Cluster
// InputInstanceGroups are the instance groups in the cluster
InputInstanceGroups []*kopsapi.InstanceGroup
// fullCluster holds the built completed cluster spec
fullCluster *kopsapi.Cluster
// assetBuilder holds the AssetBuilder, used to store assets we discover / remap
assetBuilder *assets.AssetBuilder
}
// PopulateClusterSpec takes a user-specified cluster spec, and computes the full specification that should be set on the cluster.
// We do this so that we don't need any real "brains" on the node side.
func PopulateClusterSpec(ctx context.Context, clientset simple.Clientset, cluster *kopsapi.Cluster, instanceGroups []*kopsapi.InstanceGroup, cloud fi.Cloud, assetBuilder *assets.AssetBuilder) (*kopsapi.Cluster, error) {
c := &populateClusterSpec{
cloud: cloud,
InputCluster: cluster,
InputInstanceGroups: instanceGroups,
assetBuilder: assetBuilder,
}
err := c.run(ctx, clientset)
if err != nil {
return nil, err
}
return c.fullCluster, nil
}
// Here be dragons
//
// This function has some `interesting` things going on.
// In an effort to let the cluster.Spec fall through I am
// hard coding topology in two places.. It seems and feels
// very wrong.. but at least now my new cluster.Spec.Topology
// struct is falling through..
// @kris-nova
func (c *populateClusterSpec) run(ctx context.Context, clientset simple.Clientset) error {
if errs := validation.ValidateCluster(c.InputCluster, false, clientset.VFSContext()); len(errs) != 0 {
return errs.ToAggregate()
}
cloud := c.cloud
// Copy cluster & instance groups, so we can modify them freely
cluster := &kopsapi.Cluster{}
reflectutils.JSONMergeStruct(cluster, c.InputCluster)
err := c.assignSubnets(cluster)
if err != nil {
return err
}
err = cluster.FillDefaults()
if err != nil {
return err
}
err = PerformAssignments(cluster, clientset.VFSContext(), cloud)
if err != nil {
return err
}
// TODO: Move to validate?
// Check that instance groups are defined in valid zones
{
// TODO: Check that instance groups referenced here exist
//clusterSubnets := make(map[string]*kopsapi.ClusterSubnetSpec)
//for _, subnet := range cluster.Spec.Subnets {
// if clusterSubnets[subnet.Name] != nil {
// return fmt.Errorf("Subnets contained a duplicate value: %v", subnet.Name)
// }
// clusterSubnets[subnet.Name] = subnet
//}
// Check etcd configuration
{
for i, etcd := range cluster.Spec.EtcdClusters {
if etcd.Name == "" {
return fmt.Errorf("EtcdClusters #%d did not specify a Name", i)
}
for i, m := range etcd.Members {
if m.Name == "" {
return fmt.Errorf("EtcdMember #%d of etcd-cluster %s did not specify a Name", i, etcd.Name)
}
if fi.ValueOf(m.InstanceGroup) == "" {
return fmt.Errorf("EtcdMember %s:%s did not specify a InstanceGroup", etcd.Name, m.Name)
}
}
etcdInstanceGroups := make(map[string]kopsapi.EtcdMemberSpec)
etcdNames := make(map[string]kopsapi.EtcdMemberSpec)
for _, m := range etcd.Members {
if _, ok := etcdNames[m.Name]; ok {
return fmt.Errorf("EtcdMembers found with same name %q in etcd-cluster %q", m.Name, etcd.Name)
}
instanceGroupName := fi.ValueOf(m.InstanceGroup)
if _, ok := etcdInstanceGroups[instanceGroupName]; ok {
klog.Warningf("EtcdMembers are in the same InstanceGroup %q in etcd-cluster %q (fault-tolerance may be reduced)", instanceGroupName, etcd.Name)
}
//if clusterSubnets[zone] == nil {
// return fmt.Errorf("EtcdMembers for %q is configured in zone %q, but that is not configured at the k8s-cluster level", etcd.Name, m.Zone)
//}
etcdNames[m.Name] = m
etcdInstanceGroups[instanceGroupName] = m
}
if (len(etcdNames) % 2) == 0 {
// Not technically a requirement, but doesn't really make sense to allow
return fmt.Errorf("there should be an odd number of control-plane-zones, for etcd's quorum. Hint: Use --zones and --control-plane-zones to declare worker and control plane node zones separately")
}
}
}
}
configBase, err := clientset.VFSContext().BuildVfsPath(cluster.Spec.ConfigStore.Base)
if err != nil {
return fmt.Errorf("error parsing ConfigStore.Base %q: %v", cluster.Spec.ConfigStore.Base, err)
}
if !vfs.IsClusterReadable(configBase) {
// We could implement this approach, but it seems better to get all clouds using cluster-readable storage
return fmt.Errorf("ConfigStore.Base path is not cluster readable: %v", cluster.Spec.ConfigStore.Base)
}
keyStore, err := clientset.KeyStore(cluster)
if err != nil {
return err
}
if cluster.Spec.ConfigStore.Keypairs == "" {
hasVFSPath, ok := keyStore.(fi.HasVFSPath)
if !ok {
// We will mirror to ConfigBase
basedir := configBase.Join("pki")
cluster.Spec.ConfigStore.Keypairs = basedir.Path()
} else if vfs.IsClusterReadable(hasVFSPath.VFSPath()) {
vfsPath := hasVFSPath.VFSPath()
cluster.Spec.ConfigStore.Keypairs = vfsPath.Path()
} else {
// We could implement this approach, but it seems better to get all clouds using cluster-readable storage
return fmt.Errorf("keyStore path is not cluster readable: %v", hasVFSPath.VFSPath())
}
}
secretStore, err := clientset.SecretStore(cluster)
if err != nil {
return err
}
if cluster.Spec.ConfigStore.Secrets == "" {
hasVFSPath, ok := secretStore.(fi.HasVFSPath)
if !ok {
// We will mirror to ConfigBase
basedir := configBase.Join("secrets")
cluster.Spec.ConfigStore.Secrets = basedir.Path()
} else if vfs.IsClusterReadable(hasVFSPath.VFSPath()) {
vfsPath := hasVFSPath.VFSPath()
cluster.Spec.ConfigStore.Secrets = vfsPath.Path()
} else {
// We could implement this approach, but it seems better to get all clouds using cluster-readable storage
return fmt.Errorf("secrets path is not cluster readable: %v", hasVFSPath.VFSPath())
}
}
// Normalize k8s version
versionWithoutV := strings.TrimSpace(cluster.Spec.KubernetesVersion)
versionWithoutV = strings.TrimPrefix(versionWithoutV, "v")
if cluster.Spec.KubernetesVersion != versionWithoutV {
klog.V(2).Infof("Normalizing kubernetes version: %q -> %q", cluster.Spec.KubernetesVersion, versionWithoutV)
cluster.Spec.KubernetesVersion = versionWithoutV
}
if cluster.Spec.CloudProvider.Openstack == nil {
if cluster.Spec.API.DNS == nil && cluster.Spec.API.LoadBalancer == nil {
subnetTypesByName := map[string]kopsapi.SubnetType{}
for _, subnet := range cluster.Spec.Networking.Subnets {
subnetTypesByName[subnet.Name] = subnet.Type
}
haveAPIServerNodes := false
for _, ig := range c.InputInstanceGroups {
if ig.Spec.Role == kopsapi.InstanceGroupRoleAPIServer {
haveAPIServerNodes = true
}
}
for _, ig := range c.InputInstanceGroups {
if ig.Spec.Role == kopsapi.InstanceGroupRoleAPIServer || (!haveAPIServerNodes && ig.Spec.Role == kopsapi.InstanceGroupRoleControlPlane) {
for _, subnet := range ig.Spec.Subnets {
switch subnetTypesByName[subnet] {
case kopsapi.SubnetTypePrivate:
cluster.Spec.API.LoadBalancer = &kopsapi.LoadBalancerAccessSpec{}
case kopsapi.SubnetTypePublic:
cluster.Spec.API.DNS = &kopsapi.DNSAccessSpec{}
}
}
}
}
// If both public and private, go with the load balancer.
if cluster.Spec.API.LoadBalancer != nil {
cluster.Spec.API.DNS = nil
}
}
if cluster.Spec.API.LoadBalancer != nil && cluster.Spec.API.LoadBalancer.Type == "" {
cluster.Spec.API.LoadBalancer.Type = kopsapi.LoadBalancerTypePublic
}
}
if cluster.Spec.API.LoadBalancer != nil && cluster.Spec.API.LoadBalancer.Class == "" && cluster.Spec.CloudProvider.AWS != nil {
cluster.Spec.API.LoadBalancer.Class = kopsapi.LoadBalancerClassClassic
}
if cluster.Spec.DNSZone == "" && cluster.PublishesDNSRecords() {
dns, err := cloud.DNS()
if err != nil {
return err
}
if dns != nil {
dnsType := kopsapi.DNSTypePublic
if cluster.Spec.Networking.Topology != nil && cluster.Spec.Networking.Topology.DNS != "" {
dnsType = cluster.Spec.Networking.Topology.DNS
}
dnsZone, err := FindDNSHostedZone(dns, cluster.ObjectMeta.Name, dnsType)
if err != nil {
return fmt.Errorf("error determining default DNS zone: %v", err)
}
klog.V(2).Infof("Defaulting DNS zone to: %s", dnsZone)
cluster.Spec.DNSZone = dnsZone
}
}
if !cluster.UsesNoneDNS() {
if cluster.Spec.DNSZone != "" && cluster.Spec.API.PublicName == "" {
cluster.Spec.API.PublicName = "api." + cluster.Name
}
if cluster.Spec.ExternalDNS == nil {
cluster.Spec.ExternalDNS = &kopsapi.ExternalDNSConfig{
Provider: kopsapi.ExternalDNSProviderDNSController,
}
}
}
if cluster.Spec.KubernetesVersion == "" {
return fmt.Errorf("KubernetesVersion is required")
}
sv, err := util.ParseKubernetesVersion(cluster.Spec.KubernetesVersion)
if err != nil {
return fmt.Errorf("unable to determine kubernetes version from %q", cluster.Spec.KubernetesVersion)
}
optionsContext := &components.OptionsContext{
ClusterName: cluster.ObjectMeta.Name,
KubernetesVersion: *sv,
AssetBuilder: c.assetBuilder,
}
var codeModels []loader.OptionsBuilder
{
{
// Note: DefaultOptionsBuilder comes first
codeModels = append(codeModels, &components.DefaultsOptionsBuilder{Context: optionsContext})
codeModels = append(codeModels, &components.EtcdOptionsBuilder{OptionsContext: optionsContext})
codeModels = append(codeModels, &etcdmanager.EtcdManagerOptionsBuilder{OptionsContext: optionsContext})
codeModels = append(codeModels, &components.KubeAPIServerOptionsBuilder{OptionsContext: optionsContext})
codeModels = append(codeModels, &components.DockerOptionsBuilder{OptionsContext: optionsContext})
codeModels = append(codeModels, &components.ContainerdOptionsBuilder{OptionsContext: optionsContext})
codeModels = append(codeModels, &components.NetworkingOptionsBuilder{Context: optionsContext})
codeModels = append(codeModels, &components.KubeDnsOptionsBuilder{Context: optionsContext})
codeModels = append(codeModels, &components.KubeletOptionsBuilder{OptionsContext: optionsContext})
codeModels = append(codeModels, &components.KubeControllerManagerOptionsBuilder{OptionsContext: optionsContext})
codeModels = append(codeModels, &components.KubeSchedulerOptionsBuilder{OptionsContext: optionsContext})
codeModels = append(codeModels, &components.KubeProxyOptionsBuilder{Context: optionsContext})
codeModels = append(codeModels, &components.CloudConfigurationOptionsBuilder{Context: optionsContext})
codeModels = append(codeModels, &components.CalicoOptionsBuilder{Context: optionsContext})
codeModels = append(codeModels, &components.CiliumOptionsBuilder{Context: optionsContext})
codeModels = append(codeModels, &components.OpenStackOptionsBuilder{Context: optionsContext})
codeModels = append(codeModels, &components.DiscoveryOptionsBuilder{OptionsContext: optionsContext})
codeModels = append(codeModels, &components.ClusterAutoscalerOptionsBuilder{OptionsContext: optionsContext})
codeModels = append(codeModels, &components.NodeTerminationHandlerOptionsBuilder{OptionsContext: optionsContext})
codeModels = append(codeModels, &components.NodeProblemDetectorOptionsBuilder{OptionsContext: optionsContext})
codeModels = append(codeModels, &components.AWSOptionsBuilder{OptionsContext: optionsContext})
codeModels = append(codeModels, &components.AWSEBSCSIDriverOptionsBuilder{OptionsContext: optionsContext})
codeModels = append(codeModels, &components.AWSCloudControllerManagerOptionsBuilder{OptionsContext: optionsContext})
codeModels = append(codeModels, &components.GCPCloudControllerManagerOptionsBuilder{OptionsContext: optionsContext})
codeModels = append(codeModels, &components.GCPPDCSIDriverOptionsBuilder{OptionsContext: optionsContext})
codeModels = append(codeModels, &components.HetznerCloudControllerManagerOptionsBuilder{OptionsContext: optionsContext})
codeModels = append(codeModels, &components.KarpenterOptionsBuilder{Context: optionsContext})
}
}
specBuilder := &SpecBuilder{
OptionsLoader: loader.NewOptionsLoader(codeModels),
}
completed, err := specBuilder.BuildCompleteSpec(&cluster.Spec)
if err != nil {
return fmt.Errorf("error building complete spec: %v", err)
}
// TODO: This should not be needed...
completed.Networking.Topology = c.InputCluster.Spec.Networking.Topology
// completed.Topology.Bastion = c.InputCluster.Spec.Topology.Bastion
fullCluster := &kopsapi.Cluster{}
*fullCluster = *cluster
fullCluster.Spec = *completed
if errs := validation.ValidateCluster(fullCluster, true, clientset.VFSContext()); len(errs) != 0 {
return fmt.Errorf("completed cluster failed validation: %v", errs.ToAggregate())
}
c.fullCluster = fullCluster
return nil
}
func (c *populateClusterSpec) assignSubnets(cluster *kopsapi.Cluster) error {
if cluster.Spec.Networking.NonMasqueradeCIDR == "" {
klog.Warningf("NonMasqueradeCIDR not set; can't auto-assign dependent subnets")
return nil
}
_, nonMasqueradeCIDR, err := net.ParseCIDR(cluster.Spec.Networking.NonMasqueradeCIDR)
if err != nil {
return fmt.Errorf("error parsing NonMasqueradeCIDR %q: %v", cluster.Spec.Networking.NonMasqueradeCIDR, err)
}
nmOnes, nmBits := nonMasqueradeCIDR.Mask.Size()
if cluster.Spec.KubeControllerManager == nil {
cluster.Spec.KubeControllerManager = &kopsapi.KubeControllerManagerConfig{}
}
if cluster.Spec.Networking.PodCIDR == "" && nmBits == 32 {
// Allocate as big a range as possible: the NonMasqueradeCIDR mask + 1, with a '1' in the extra bit
ip := nonMasqueradeCIDR.IP.Mask(nonMasqueradeCIDR.Mask)
ip[nmOnes/8] |= 128 >> (nmOnes % 8)
cidr := net.IPNet{IP: ip, Mask: net.CIDRMask(nmOnes+1, nmBits)}
cluster.Spec.Networking.PodCIDR = cidr.String()
klog.V(2).Infof("Defaulted PodCIDR to %v", cluster.Spec.Networking.PodCIDR)
}
if cluster.Spec.Networking.ServiceClusterIPRange == "" {
if nmBits > 32 {
cluster.Spec.Networking.ServiceClusterIPRange = "fd00:5e4f:ce::/108"
} else {
cluster.Spec.Networking.ServiceClusterIPRange = "100.64.0.0/13"
}
klog.V(2).Infof("Defaulted ServiceClusterIPRange to %v", cluster.Spec.Networking.ServiceClusterIPRange)
}
return nil
}