-
Notifications
You must be signed in to change notification settings - Fork 155
/
provider.go
295 lines (239 loc) · 10.2 KB
/
provider.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
/*
Copyright 2021 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 aws
import (
"context"
"errors"
"fmt"
kubermaticv1 "k8c.io/kubermatic/v2/pkg/apis/kubermatic/v1"
kuberneteshelper "k8c.io/kubermatic/v2/pkg/kubernetes"
"k8c.io/kubermatic/v2/pkg/provider"
"k8c.io/kubermatic/v2/pkg/resources"
)
const (
resourceNamePrefix = "kubernetes-"
kubernetesClusterTagPrefix = "kubernetes.io/cluster/"
ownershipTagPrefix = "owned-by.kubermatic.k8c.io/"
regionAnnotationKey = "kubermatic.io/aws-region"
cleanupFinalizer = "kubermatic.k8c.io/cleanup-aws"
// The individual finalizers are deprecated and not used for newly reconciled
// clusters, where the single cleanupFinalizer is enough.
securityGroupCleanupFinalizer = "kubermatic.k8c.io/cleanup-aws-security-group"
instanceProfileCleanupFinalizer = "kubermatic.k8c.io/cleanup-aws-instance-profile"
controlPlaneRoleCleanupFinalizer = "kubermatic.k8c.io/cleanup-aws-control-plane-role"
tagCleanupFinalizer = "kubermatic.k8c.io/cleanup-aws-tags"
authFailure = "AuthFailure"
)
type AmazonEC2 struct {
dc *kubermaticv1.DatacenterSpecAWS
secretKeySelector provider.SecretKeySelectorValueFunc
// clientSet is used during tests only
clientSet *ClientSet
}
// NewCloudProvider returns a new AmazonEC2 provider.
func NewCloudProvider(dc *kubermaticv1.Datacenter, secretKeyGetter provider.SecretKeySelectorValueFunc) (*AmazonEC2, error) {
if dc.Spec.AWS == nil {
return nil, errors.New("datacenter is not an AWS datacenter")
}
return &AmazonEC2{
dc: dc.Spec.AWS,
secretKeySelector: secretKeyGetter,
}, nil
}
var _ provider.ReconcilingCloudProvider = &AmazonEC2{}
func (a *AmazonEC2) getClientSet(ctx context.Context, cloud kubermaticv1.CloudSpec) (*ClientSet, error) {
if a.clientSet != nil {
return a.clientSet, nil
}
accessKeyID, secretAccessKey, assumeRoleARN, assumeRoleExternalID, err := GetCredentialsForCluster(cloud, a.secretKeySelector)
if err != nil {
return nil, err
}
return GetClientSet(ctx, accessKeyID, secretAccessKey, assumeRoleARN, assumeRoleExternalID, a.dc.Region)
}
func (a *AmazonEC2) DefaultCloudSpec(ctx context.Context, spec *kubermaticv1.ClusterSpec) error {
if spec.Cloud.AWS == nil {
return errors.New("no AWS cloud spec found")
}
if spec.Cloud.AWS.NodePortsAllowedIPRanges == nil {
switch spec.ClusterNetwork.IPFamily {
case kubermaticv1.IPFamilyIPv4:
spec.Cloud.AWS.NodePortsAllowedIPRanges = &kubermaticv1.NetworkRanges{
CIDRBlocks: []string{resources.IPv4MatchAnyCIDR},
}
case kubermaticv1.IPFamilyDualStack:
spec.Cloud.AWS.NodePortsAllowedIPRanges = &kubermaticv1.NetworkRanges{
CIDRBlocks: []string{resources.IPv4MatchAnyCIDR, resources.IPv6MatchAnyCIDR},
}
}
}
return nil
}
// ValidateCloudSpec validates the fields that the user can override while creating
// a cluster. We only check those that must pre-exist in the AWS account
// (i.e. the security group and VPC), because the others (like route table)
// will be created if they do not yet exist / are not explicitly specified.
// TL;DR: This validation does not need to be extended to cover more than
// VPC and SG.
func (a *AmazonEC2) ValidateCloudSpec(ctx context.Context, spec kubermaticv1.CloudSpec) error {
client, err := a.getClientSet(ctx, spec)
if err != nil {
return fmt.Errorf("failed to get API client: %w", err)
}
// Some settings require the vpc to be set
if spec.AWS.SecurityGroupID != "" {
if spec.AWS.VPCID == "" {
return fmt.Errorf("VPC must be set when specifying a security group")
}
}
if spec.AWS.VPCID != "" {
vpc, err := getVPCByID(ctx, client.EC2, spec.AWS.VPCID)
if err != nil {
return err
}
if spec.AWS.SecurityGroupID != "" {
if _, err = getSecurityGroupByID(ctx, client.EC2, vpc, spec.AWS.SecurityGroupID); err != nil {
return err
}
}
}
return nil
}
// ValidateCloudSpecUpdate verifies whether an update of cloud spec is valid and permitted.
func (a *AmazonEC2) ValidateCloudSpecUpdate(_ context.Context, oldSpec kubermaticv1.CloudSpec, newSpec kubermaticv1.CloudSpec) error {
if oldSpec.AWS == nil || newSpec.AWS == nil {
return errors.New("'aws' spec is empty")
}
if oldSpec.AWS.VPCID != "" && oldSpec.AWS.VPCID != newSpec.AWS.VPCID {
return fmt.Errorf("updating AWS VPC ID is not supported (was %s, updated to %s)", oldSpec.AWS.VPCID, newSpec.AWS.VPCID)
}
if oldSpec.AWS.RouteTableID != "" && oldSpec.AWS.RouteTableID != newSpec.AWS.RouteTableID {
return fmt.Errorf("updating AWS route table ID is not supported (was %s, updated to %s)", oldSpec.AWS.RouteTableID, newSpec.AWS.RouteTableID)
}
if oldSpec.AWS.SecurityGroupID != "" && oldSpec.AWS.SecurityGroupID != newSpec.AWS.SecurityGroupID {
return fmt.Errorf("updating AWS security group ID is not supported (was %s, updated to %s)", oldSpec.AWS.SecurityGroupID, newSpec.AWS.SecurityGroupID)
}
if oldSpec.AWS.ControlPlaneRoleARN != "" && oldSpec.AWS.ControlPlaneRoleARN != newSpec.AWS.ControlPlaneRoleARN {
return fmt.Errorf("updating AWS control plane ARN is not supported (was %s, updated to %s)", oldSpec.AWS.ControlPlaneRoleARN, newSpec.AWS.ControlPlaneRoleARN)
}
if oldSpec.AWS.InstanceProfileName != "" && oldSpec.AWS.InstanceProfileName != newSpec.AWS.InstanceProfileName {
return fmt.Errorf("updating AWS instance profile name is not supported (was %s, updated to %s)", oldSpec.AWS.InstanceProfileName, newSpec.AWS.InstanceProfileName)
}
return nil
}
func (a *AmazonEC2) InitializeCloudProvider(ctx context.Context, cluster *kubermaticv1.Cluster, update provider.ClusterUpdater) (*kubermaticv1.Cluster, error) {
// Initialization should only occur once.
firstInitialization := !kuberneteshelper.HasFinalizer(cluster, cleanupFinalizer)
return a.reconcileCluster(ctx, cluster, update, false, firstInitialization)
}
func (a *AmazonEC2) ReconcileCluster(ctx context.Context, cluster *kubermaticv1.Cluster, update provider.ClusterUpdater) (*kubermaticv1.Cluster, error) {
return a.reconcileCluster(ctx, cluster, update, true, true)
}
func (a *AmazonEC2) reconcileCluster(ctx context.Context, cluster *kubermaticv1.Cluster, update provider.ClusterUpdater, force bool, setTags bool) (*kubermaticv1.Cluster, error) {
client, err := a.getClientSet(ctx, cluster.Spec.Cloud)
if err != nil {
return nil, fmt.Errorf("failed to get API client: %w", err)
}
cluster, err = update(ctx, cluster.Name, func(cluster *kubermaticv1.Cluster) {
kuberneteshelper.AddFinalizer(cluster, cleanupFinalizer)
})
if err != nil {
return nil, fmt.Errorf("failed to add finalizer: %w", err)
}
// update VPC ID
if force || cluster.Spec.Cloud.AWS.VPCID == "" {
cluster, err = reconcileVPC(ctx, client.EC2, cluster, update)
if err != nil {
return nil, err
}
}
// update route table ID
if force || cluster.Spec.Cloud.AWS.RouteTableID == "" {
cluster, err = reconcileRouteTable(ctx, client.EC2, cluster, update)
if err != nil {
return nil, err
}
}
// All machines will live in one dedicated security group.
if force || cluster.Spec.Cloud.AWS.SecurityGroupID == "" {
cluster, err = reconcileSecurityGroup(ctx, client.EC2, cluster, update)
if err != nil {
return nil, err
}
}
// We create a dedicated role for the control plane.
if !cluster.Spec.Cloud.AWS.DisableIAMReconciling && (force || cluster.Spec.Cloud.AWS.ControlPlaneRoleARN == "") {
cluster, err = reconcileControlPlaneRole(ctx, client.IAM, cluster, update)
if err != nil {
return nil, err
}
}
// instance profile and role for worker nodes
if !cluster.Spec.Cloud.AWS.DisableIAMReconciling && (force || cluster.Spec.Cloud.AWS.InstanceProfileName == "") {
cluster, err = reconcileWorkerInstanceProfile(ctx, client.IAM, cluster, update)
if err != nil {
return nil, err
}
}
// We put this as an annotation on the cluster to allow addons to read this
// information.
cluster, err = reconcileRegionAnnotation(ctx, cluster, update, a.dc.Region)
if err != nil {
return nil, err
}
// update resource ownership for older clusters
cluster, err = backfillOwnershipTags(ctx, client, cluster, update)
if err != nil {
return nil, err
}
// tag all resources
if setTags {
cluster, err = reconcileClusterTags(ctx, client.EC2, cluster, update)
if err != nil {
return nil, err
}
}
return cluster, nil
}
func (a *AmazonEC2) CleanUpCloudProvider(ctx context.Context, cluster *kubermaticv1.Cluster, updater provider.ClusterUpdater) (*kubermaticv1.Cluster, error) {
// prevent excessive requests to AWS when a cluster is re-reconciled often
// during its deletion phase
if !kuberneteshelper.HasFinalizer(cluster, cleanupFinalizer) {
return cluster, nil
}
client, err := a.getClientSet(ctx, cluster.Spec.Cloud)
if err != nil {
return nil, fmt.Errorf("failed to get API client: %w", err)
}
// worker instance profile + role
if err := cleanUpWorkerInstanceProfile(ctx, client.IAM, cluster); err != nil {
return nil, fmt.Errorf("failed to clean up worker instance profile: %w", err)
}
// control plane role
if err := cleanUpControlPlaneRole(ctx, client.IAM, cluster); err != nil {
return nil, fmt.Errorf("failed to clean up control plane role: %w", err)
}
// security group
if err := cleanUpSecurityGroup(ctx, client.EC2, cluster); err != nil {
return nil, fmt.Errorf("failed to clean up security group: %w", err)
}
// No cleanup required for the route table itself.
// No cleanup required for the VPC itself.
// remove cluster tags
if err := cleanUpTags(ctx, client.EC2, cluster); err != nil {
return nil, fmt.Errorf("failed to clean up tags: %w", err)
}
return updater(ctx, cluster.Name, func(cluster *kubermaticv1.Cluster) {
kuberneteshelper.RemoveFinalizer(cluster, securityGroupCleanupFinalizer, controlPlaneRoleCleanupFinalizer, instanceProfileCleanupFinalizer, tagCleanupFinalizer, cleanupFinalizer)
})
}