forked from pingcap/kops
-
Notifications
You must be signed in to change notification settings - Fork 0
/
bootstrapscript.go
418 lines (356 loc) · 12.4 KB
/
bootstrapscript.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
/*
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 model
import (
"bytes"
"crypto/sha1"
"encoding/base64"
"fmt"
"os"
"strconv"
"strings"
"text/template"
"github.com/ghodss/yaml"
"k8s.io/klog"
"k8s.io/kops/pkg/apis/kops"
"k8s.io/kops/pkg/apis/nodeup"
"k8s.io/kops/pkg/model/resources"
"k8s.io/kops/upup/pkg/fi"
"k8s.io/kops/upup/pkg/fi/cloudup/awsup"
)
// BootstrapScript creates the bootstrap script
type BootstrapScript struct {
NodeUpSource string
NodeUpSourceHash string
NodeUpConfigBuilder func(ig *kops.InstanceGroup) (*nodeup.Config, error)
}
// KubeEnv returns the nodeup config for the instance group
func (b *BootstrapScript) KubeEnv(ig *kops.InstanceGroup) (string, error) {
config, err := b.NodeUpConfigBuilder(ig)
if err != nil {
return "", err
}
data, err := kops.ToRawYaml(config)
if err != nil {
return "", err
}
return string(data), nil
}
func (b *BootstrapScript) buildEnvironmentVariables(cluster *kops.Cluster) (map[string]string, error) {
env := make(map[string]string)
if os.Getenv("GOSSIP_DNS_CONN_LIMIT") != "" {
env["GOSSIP_DNS_CONN_LIMIT"] = os.Getenv("GOSSIP_DNS_CONN_LIMIT")
}
if os.Getenv("S3_ENDPOINT") != "" {
env["S3_ENDPOINT"] = os.Getenv("S3_ENDPOINT")
env["S3_REGION"] = os.Getenv("S3_REGION")
env["S3_ACCESS_KEY_ID"] = os.Getenv("S3_ACCESS_KEY_ID")
env["S3_SECRET_ACCESS_KEY"] = os.Getenv("S3_SECRET_ACCESS_KEY")
}
// Pass in required credentials when using user-defined swift endpoint
if os.Getenv("OS_AUTH_URL") != "" {
for _, envVar := range []string{
"OS_TENANT_ID", "OS_TENANT_NAME", "OS_PROJECT_ID", "OS_PROJECT_NAME",
"OS_PROJECT_DOMAIN_NAME", "OS_PROJECT_DOMAIN_ID",
"OS_DOMAIN_NAME", "OS_DOMAIN_ID",
"OS_USERNAME",
"OS_PASSWORD",
"OS_AUTH_URL",
"OS_REGION_NAME",
} {
env[envVar] = fmt.Sprintf("'%s'", os.Getenv(envVar))
}
}
if kops.CloudProviderID(cluster.Spec.CloudProvider) == kops.CloudProviderDO {
doToken := os.Getenv("DIGITALOCEAN_ACCESS_TOKEN")
if doToken != "" {
env["DIGITALOCEAN_ACCESS_TOKEN"] = doToken
}
}
if kops.CloudProviderID(cluster.Spec.CloudProvider) == kops.CloudProviderAWS {
region, err := awsup.FindRegion(cluster)
if err != nil {
return nil, err
}
if region == "" {
klog.Warningf("unable to determine cluster region")
} else {
env["AWS_REGION"] = region
}
}
if kops.CloudProviderID(cluster.Spec.CloudProvider) == kops.CloudProviderALI {
region := os.Getenv("OSS_REGION")
if region != "" {
env["OSS_REGION"] = os.Getenv("OSS_REGION")
}
aliID := os.Getenv("ALIYUN_ACCESS_KEY_ID")
if aliID != "" {
env["ALIYUN_ACCESS_KEY_ID"] = os.Getenv("ALIYUN_ACCESS_KEY_ID")
}
aliSecret := os.Getenv("ALIYUN_ACCESS_KEY_SECRET")
if aliSecret != "" {
env["ALIYUN_ACCESS_KEY_SECRET"] = os.Getenv("ALIYUN_ACCESS_KEY_SECRET")
}
}
return env, nil
}
// ResourceNodeUp generates and returns a nodeup (bootstrap) script from a
// template file, substituting in specific env vars & cluster spec configuration
func (b *BootstrapScript) ResourceNodeUp(ig *kops.InstanceGroup, cluster *kops.Cluster) (*fi.ResourceHolder, error) {
// Bastions can have AdditionalUserData, but if there isn't any skip this part
if ig.IsBastion() && len(ig.Spec.AdditionalUserData) == 0 {
return nil, nil
}
functions := template.FuncMap{
"NodeUpSource": func() string {
return b.NodeUpSource
},
"NodeUpSourceHash": func() string {
return b.NodeUpSourceHash
},
"KubeEnv": func() (string, error) {
return b.KubeEnv(ig)
},
"EnvironmentVariables": func() (string, error) {
env, err := b.buildEnvironmentVariables(cluster)
if err != nil {
return "", err
}
var b bytes.Buffer
for k, v := range env {
b.WriteString(fmt.Sprintf("export %s=%s\n", k, v))
}
return b.String(), nil
},
"ProxyEnv": func() string {
return b.createProxyEnv(cluster.Spec.EgressProxy)
},
"ClusterSpec": func() (string, error) {
cs := cluster.Spec
spec := make(map[string]interface{})
spec["cloudConfig"] = cs.CloudConfig
spec["docker"] = cs.Docker
spec["kubeProxy"] = cs.KubeProxy
spec["kubelet"] = cs.Kubelet
if cs.NodeAuthorization != nil {
spec["nodeAuthorization"] = cs.NodeAuthorization
}
if cs.KubeAPIServer != nil && cs.KubeAPIServer.EnableBootstrapAuthToken != nil {
spec["kubeAPIServer"] = map[string]interface{}{
"enableBootstrapAuthToken": cs.KubeAPIServer.EnableBootstrapAuthToken,
}
}
if ig.IsMaster() {
spec["encryptionConfig"] = cs.EncryptionConfig
spec["etcdClusters"] = make(map[string]kops.EtcdClusterSpec, 0)
spec["kubeAPIServer"] = cs.KubeAPIServer
spec["kubeControllerManager"] = cs.KubeControllerManager
spec["kubeScheduler"] = cs.KubeScheduler
spec["masterKubelet"] = cs.MasterKubelet
for _, etcdCluster := range cs.EtcdClusters {
c := kops.EtcdClusterSpec{
Image: etcdCluster.Image,
Version: etcdCluster.Version,
}
// if the user has not specified memory or cpu allotments for etcd, do not
// apply one. Described in PR #6313.
if etcdCluster.CPURequest != nil {
c.CPURequest = etcdCluster.CPURequest
}
if etcdCluster.MemoryRequest != nil {
c.MemoryRequest = etcdCluster.MemoryRequest
}
spec["etcdClusters"].(map[string]kops.EtcdClusterSpec)[etcdCluster.Name] = c
}
}
hooks, err := b.getRelevantHooks(cs.Hooks, ig.Spec.Role)
if err != nil {
return "", err
}
if len(hooks) > 0 {
spec["hooks"] = hooks
}
fileAssets, err := b.getRelevantFileAssets(cs.FileAssets, ig.Spec.Role)
if err != nil {
return "", err
}
if len(fileAssets) > 0 {
spec["fileAssets"] = fileAssets
}
content, err := yaml.Marshal(spec)
if err != nil {
return "", fmt.Errorf("error converting cluster spec to yaml for inclusion within bootstrap script: %v", err)
}
return string(content), nil
},
"IGSpec": func() (string, error) {
spec := make(map[string]interface{})
spec["kubelet"] = ig.Spec.Kubelet
spec["nodeLabels"] = ig.Spec.NodeLabels
spec["taints"] = ig.Spec.Taints
hooks, err := b.getRelevantHooks(ig.Spec.Hooks, ig.Spec.Role)
if err != nil {
return "", err
}
if len(hooks) > 0 {
spec["hooks"] = hooks
}
fileAssets, err := b.getRelevantFileAssets(ig.Spec.FileAssets, ig.Spec.Role)
if err != nil {
return "", err
}
if len(fileAssets) > 0 {
spec["fileAssets"] = fileAssets
}
content, err := yaml.Marshal(spec)
if err != nil {
return "", fmt.Errorf("error converting instancegroup spec to yaml for inclusion within bootstrap script: %v", err)
}
return string(content), nil
},
}
awsNodeUpTemplate, err := resources.AWSNodeUpTemplate(ig)
if err != nil {
return nil, err
}
templateResource, err := NewTemplateResource("nodeup", awsNodeUpTemplate, functions, nil)
if err != nil {
return nil, err
}
return fi.WrapResource(templateResource), nil
}
// getRelevantHooks returns a list of hooks to be applied to the instance group,
// with the Manifest and ExecContainer Commands fingerprinted to reduce size
func (b *BootstrapScript) getRelevantHooks(allHooks []kops.HookSpec, role kops.InstanceGroupRole) ([]kops.HookSpec, error) {
relevantHooks := []kops.HookSpec{}
for _, hook := range allHooks {
if len(hook.Roles) == 0 {
relevantHooks = append(relevantHooks, hook)
continue
}
for _, hookRole := range hook.Roles {
if role == hookRole {
relevantHooks = append(relevantHooks, hook)
break
}
}
}
hooks := []kops.HookSpec{}
if len(relevantHooks) > 0 {
for _, hook := range relevantHooks {
if hook.Manifest != "" {
manifestFingerprint, err := b.computeFingerprint(hook.Manifest)
if err != nil {
return nil, err
}
hook.Manifest = manifestFingerprint + " (fingerprint)"
}
if hook.ExecContainer != nil && hook.ExecContainer.Command != nil {
execContainerCommandFingerprint, err := b.computeFingerprint(strings.Join(hook.ExecContainer.Command[:], " "))
if err != nil {
return nil, err
}
execContainerAction := &kops.ExecContainerAction{
Command: []string{execContainerCommandFingerprint + " (fingerprint)"},
Environment: hook.ExecContainer.Environment,
Image: hook.ExecContainer.Image,
}
hook.ExecContainer = execContainerAction
}
hook.Roles = nil
hooks = append(hooks, hook)
}
}
return hooks, nil
}
// getRelevantFileAssets returns a list of file assets to be applied to the
// instance group, with the Content fingerprinted to reduce size
func (b *BootstrapScript) getRelevantFileAssets(allFileAssets []kops.FileAssetSpec, role kops.InstanceGroupRole) ([]kops.FileAssetSpec, error) {
relevantFileAssets := []kops.FileAssetSpec{}
for _, fileAsset := range allFileAssets {
if len(fileAsset.Roles) == 0 {
relevantFileAssets = append(relevantFileAssets, fileAsset)
continue
}
for _, fileAssetRole := range fileAsset.Roles {
if role == fileAssetRole {
relevantFileAssets = append(relevantFileAssets, fileAsset)
break
}
}
}
fileAssets := []kops.FileAssetSpec{}
if len(relevantFileAssets) > 0 {
for _, fileAsset := range relevantFileAssets {
if fileAsset.Content != "" {
contentFingerprint, err := b.computeFingerprint(fileAsset.Content)
if err != nil {
return nil, err
}
fileAsset.Content = contentFingerprint + " (fingerprint)"
}
fileAsset.Roles = nil
fileAssets = append(fileAssets, fileAsset)
}
}
return fileAssets, nil
}
// computeFingerprint takes a string and returns a base64 encoded fingerprint
func (b *BootstrapScript) computeFingerprint(content string) (string, error) {
hasher := sha1.New()
if _, err := hasher.Write([]byte(content)); err != nil {
return "", fmt.Errorf("error computing fingerprint hash: %v", err)
}
return base64.StdEncoding.EncodeToString(hasher.Sum(nil)), nil
}
func (b *BootstrapScript) createProxyEnv(ps *kops.EgressProxySpec) string {
var buffer bytes.Buffer
if ps != nil && ps.HTTPProxy.Host != "" {
var httpProxyURL string
// TODO double check that all the code does this
// TODO move this into a validate so we can enforce the string syntax
if !strings.HasPrefix(ps.HTTPProxy.Host, "http://") {
httpProxyURL = "http://"
}
if ps.HTTPProxy.Port != 0 {
httpProxyURL += ps.HTTPProxy.Host + ":" + strconv.Itoa(ps.HTTPProxy.Port)
} else {
httpProxyURL += ps.HTTPProxy.Host
}
// Set env variables for base environment
buffer.WriteString(`echo "http_proxy=` + httpProxyURL + `" >> /etc/environment` + "\n")
buffer.WriteString(`echo "https_proxy=` + httpProxyURL + `" >> /etc/environment` + "\n")
buffer.WriteString(`echo "no_proxy=` + ps.ProxyExcludes + `" >> /etc/environment` + "\n")
buffer.WriteString(`echo "NO_PROXY=` + ps.ProxyExcludes + `" >> /etc/environment` + "\n")
// Load the proxy environment variables
buffer.WriteString("while read in; do export $in; done < /etc/environment\n")
// Set env variables for package manager depending on OS Distribution (N/A for CoreOS)
// Note: Nodeup will source the `/etc/environment` file within docker config in the correct location
buffer.WriteString("case `cat /proc/version` in\n")
buffer.WriteString("*[Dd]ebian*)\n")
buffer.WriteString(` echo "Acquire::http::Proxy \"${http_proxy}\";" > /etc/apt/apt.conf.d/30proxy ;;` + "\n")
buffer.WriteString("*[Uu]buntu*)\n")
buffer.WriteString(` echo "Acquire::http::Proxy \"${http_proxy}\";" > /etc/apt/apt.conf.d/30proxy ;;` + "\n")
buffer.WriteString("*[Rr]ed[Hh]at*)\n")
buffer.WriteString(` echo "http_proxy=${http_proxy}" >> /etc/yum.conf ;;` + "\n")
buffer.WriteString("esac\n")
// Set env variables for systemd
buffer.WriteString(`echo "DefaultEnvironment=\"http_proxy=${http_proxy}\" \"https_proxy=${http_proxy}\"`)
buffer.WriteString(` \"NO_PROXY=${no_proxy}\" \"no_proxy=${no_proxy}\""`)
buffer.WriteString(" >> /etc/systemd/system.conf\n")
// Restart stuff
buffer.WriteString("systemctl daemon-reload\n")
buffer.WriteString("systemctl daemon-reexec\n")
}
return buffer.String()
}