-
Notifications
You must be signed in to change notification settings - Fork 323
/
setupcli.go
837 lines (737 loc) · 30 KB
/
setupcli.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
// Copyright 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License"). You may not
// use this file except in compliance with the License. A copy of the
// License is located at
//
// http://aws.amazon.com/apache2.0/
//
// or in the "license" file accompanying this file. This file 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.
//go:build !darwin
// +build !darwin
// Package main represents the entry point of the ssm agent setup manager.
package main
import (
"flag"
"fmt"
"os"
"path/filepath"
"strings"
"sync"
"time"
"github.com/aws/amazon-ssm-agent/agent/fileutil"
"github.com/aws/amazon-ssm-agent/agent/log"
"github.com/aws/amazon-ssm-agent/agent/log/logger"
"github.com/aws/amazon-ssm-agent/agent/managedInstances/registration"
"github.com/aws/amazon-ssm-agent/agent/platform"
"github.com/aws/amazon-ssm-agent/agent/setupcli/managers"
"github.com/aws/amazon-ssm-agent/agent/setupcli/managers/common"
"github.com/aws/amazon-ssm-agent/agent/setupcli/managers/configurationmanager"
"github.com/aws/amazon-ssm-agent/agent/setupcli/managers/downloadmanager"
"github.com/aws/amazon-ssm-agent/agent/setupcli/managers/helpers"
"github.com/aws/amazon-ssm-agent/agent/setupcli/managers/packagemanagers"
"github.com/aws/amazon-ssm-agent/agent/setupcli/managers/registermanager"
"github.com/aws/amazon-ssm-agent/agent/setupcli/managers/servicemanagers"
"github.com/aws/amazon-ssm-agent/agent/setupcli/managers/verificationmanagers"
"github.com/aws/amazon-ssm-agent/agent/setupcli/utility"
agentVersioning "github.com/aws/amazon-ssm-agent/agent/version"
"github.com/aws/amazon-ssm-agent/agent/versionutil"
utilityCmn "github.com/aws/amazon-ssm-agent/common/utility"
"github.com/aws/amazon-ssm-agent/core/executor"
"github.com/cihub/seelog"
)
// cli parameters
var (
LogMutex = new(sync.RWMutex)
artifactsDir string
region string
install bool
shutdown bool
register bool
role string
tags string
activationCode string
activationId string
environment string
skipSignatureValidation bool
override bool
registerInputModel *registermanager.RegisterAgentInputModel
help bool
version string
downgrade bool
manifestUrl string
)
var (
getPackageManager = managers.GetPackageManager
getConfigurationManager = managers.GetConfigurationManager
getServiceManager = managers.GetServiceManager
getRegisterManager = managers.GetRegisterManager
getRegistrationInfo = registration.NewOnpremRegistrationInfo
getVerificationManager = managers.GetVerificationManager
getDownloadManager = managers.GetDownloadManager
startAgent = servicemanagers.StartAgent
hasElevatedPermissions = utilityCmn.IsRunningElevatedPermissions
osExecutable = os.Executable
evalSymLinks = filepath.EvalSymlinks
filePathDir = filepath.Dir
fileUtilCreateTemp = fileutil.CreateTempDir
fileUtilMakeDirs = fileutil.MakeDirs
isPlatformNano = platform.IsPlatformNanoServer
utilityCheckSum = utility.ComputeCheckSum
newProcessExecutor = executor.NewProcessExecutor
svcMgrStopAgent = servicemanagers.StopAgent
helperInstallAgent = helpers.InstallAgent
helperUnInstallAgent = helpers.UninstallAgent
timeSleep = time.Sleep
)
var osExit = func(exitCode int, log log.T, message string, messageArgs ...interface{}) {
if message != "" {
if exitCode == 0 {
log.Infof(message, messageArgs...)
} else {
log.Errorf(message, messageArgs...)
}
}
log.Flush()
log.Close()
os.Exit(exitCode)
}
// main function to perform SSM-Setup-CLI tasks for greengrass and On-prem devices
func main() {
// initialization of various managers
var packageManager packagemanagers.IPackageManager
var serviceManager servicemanagers.IServiceManager
var verificationManager verificationmanagers.IVerificationManager
var err error
// set parameters passed
setParams()
if strings.ToLower(environment) == string(common.GreengrassEnv) {
// initialize logger
log := initializeLogger()
defer func() {
log.Flush()
log.Close()
}()
// set & verify params needed for greengrass
setVerifyGreenGrassParams(log)
// initialize
if packageManager, err = getPackageManager(log); err != nil {
osExit(1, log, "Failed to determine package manager: %v", err)
}
if serviceManager, err = getServiceManager(log); err != nil {
osExit(1, log, "Failed to determine service manager: %v", err)
}
// performs greengrass related based on arguments
performGreengrassSteps(log, packageManager, serviceManager)
} else if strings.ToLower(environment) == string(common.OnPremEnv) || strings.TrimSpace(environment) == "" {
// Check whether the SSM Setup CLI is running with elevated permissions or not
err := hasElevatedPermissions()
if err != nil {
fmt.Println("Please run as root/admin. Err: ", err)
os.Exit(1)
}
log := initializeLoggerForOnprem()
defer func() {
log.Flush()
log.Close()
}()
log.Infof("ssm-setup-cli -version: %v", agentVersioning.Version)
// set proxy values
common.SetProxyConfig(log)
// set & verify params needed for Onprem
setVerifyOnpremParams(log)
// Initialization
if packageManager, err = getPackageManager(log); err != nil {
osExit(1, log, "Failed to determine package manager: %v", err)
}
if serviceManager, err = getServiceManager(log); err != nil {
osExit(1, log, "Failed to determine service manager: %v", err)
}
// verification manager will be used only by On-prem devices
if verificationManager, err = getVerificationManager(); err != nil {
osExit(1, log, "Failed to determine verification manager: %v", err)
}
// Perform on-prem steps based on flags passed
err = performOnpremSteps(log, packageManager, verificationManager, serviceManager)
if err != nil {
osExit(1, log, "Failed to perform Onprem registration: %v", err)
}
} else {
log := initializeLogger()
flagUsage()
osExit(1, log, "Invalid environment. - %v", environment)
}
}
func performGreengrassSteps(log log.T, packageManager packagemanagers.IPackageManager, serviceManager servicemanagers.IServiceManager) {
var err error
// Check whether the SSM Setup CLI is running with elevated permissions or not
err = hasElevatedPermissions()
if err != nil {
osExit(1, log, "ssm-setup-cli is not executed by root")
}
// download and install
if install {
// Configure ssm agent using configuration in artifacts folder if not already configured
configManager := getConfigurationManager()
log.Infof("Attempting to configure agent")
if err = configurationmanager.ConfigureAgent(log, configManager, artifactsDir); err != nil {
log.Warnf("Failed to configure agent with error: %w", err)
}
if err = configManager.CreateUpdateAgentConfigWithOnPremIdentity(); err != nil {
log.Warnf("Failed to configure agent with On-prem identity: %v", err)
}
log.Info("Starting amazon-ssm-agent install")
var isInstalled bool
var reInstallAgent bool
if isInstalled, err = packageManager.IsAgentInstalled(); err != nil {
osExit(1, log, "Failed to determine if agent is installed: %w", err)
} else if isInstalled {
log.Infof("Agent already installed, checking version")
if version, err := packageManager.GetInstalledAgentVersion(); err != nil {
log.Warnf("Failed to get agent version, falling back to re-installation: %w", err)
reInstallAgent = true
} else {
log.Infof("Agent version installed is %s", version)
if isVersionAlreadyInstalled, err := hasAgentAlreadyInstalled(version); err != nil || !isVersionAlreadyInstalled {
log.Warnf("Installed version is older/higher than expected Agent Version or Failed to compare, attempting to reinstall the agent: %w", err)
reInstallAgent = true
} else if isVersionAlreadyInstalled {
osExit(0, log, "Version is already installed, not attempting to install agent")
}
}
}
if reInstallAgent {
log.Infof("Starting agent uninstallation")
if err := helperUnInstallAgent(log, packageManager, serviceManager, ""); err != nil {
osExit(1, log, "Failed to uninstall the agent: %v", err)
}
log.Infof("Agent uninstalled successfully")
log.Infof("Starting agent installation")
if err := helperInstallAgent(log, packageManager, serviceManager, artifactsDir); err != nil {
osExit(1, log, "Failed to install agent: %v", err)
}
log.Infof("Agent installed successfully")
} else {
log.Infof("Agent is not installed on the system, Starting agent installation")
if err := helperInstallAgent(log, packageManager, serviceManager, artifactsDir); err != nil {
osExit(1, log, "Failed to install agent: %v", err)
}
log.Infof("Agent installed successfully")
}
}
// register
if register {
log.Info("Verifying agent is installed before attempting to register")
if isInstalled, err := packageManager.IsAgentInstalled(); err != nil {
osExit(1, log, "Failed to determine if agent is installed: %v", err)
} else if !isInstalled {
osExit(1, log, "Agent must be installed before attempting to register")
}
log.Info("Verified agent is installed")
registrationInfo := getRegistrationInfo()
instanceId := registrationInfo.InstanceID(log, "", registration.RegVaultKey)
if instanceId != "" {
log.Infof("Agent already registered with instance id %s", instanceId)
} else {
log.Info("Agent is not registered")
}
if instanceId != "" && !override {
log.Info("skipping registration because override flag is not set, just starting agent")
if err = startAgent(serviceManager, log); err != nil {
osExit(1, log, "Failed to start agent: %v", err)
}
return
}
log.Infof("Stopping agent before registering")
if err = servicemanagers.StopAgent(serviceManager, log); err != nil {
osExit(1, log, "Failed to stop agent: %v", err)
}
log.Infof("Registering agent")
if err = getRegisterManager().RegisterAgent(registerInputModel); err != nil {
osExit(1, log, "Failed to register agent: %v", err)
}
log.Infof("Successfully registered the agent, starting agent")
if err = startAgent(serviceManager, log); err != nil {
osExit(1, log, "Failed to start agent: %v", err)
}
log.Infof("Successfully started agent, reloading registration info")
registrationInfo.ReloadInstanceInfo(log, "", registration.RegVaultKey)
instanceId = registrationInfo.InstanceID(log, "", registration.RegVaultKey)
if instanceId == "" {
osExit(1, log, "Failed to get new instance id from registration info after registration")
} else {
log.Infof("Instance id after registration is %s", instanceId)
}
}
// shutdown
if shutdown {
log.Info("Shutting down amazon-ssm-agent")
if err = svcMgrStopAgent(serviceManager, log); err != nil {
osExit(1, log, "Failed to shut down agent: %v", err)
}
}
log.Flush()
log.Close()
}
func performOnpremSteps(log log.T, packageManager packagemanagers.IPackageManager, verificationManager verificationmanagers.IVerificationManager, serviceManager servicemanagers.IServiceManager) error {
// this path will be used for storing artifacts downloaded
ssmSetupCLIExecutablePath, err := getExecutableFolderPath()
if err != nil {
return fmt.Errorf("could not get the ssm-setup-cli executable path: %v", err)
}
// create directories for storing artifacts
setupCLIArtifactsPath, err := fileUtilCreateTemp(ssmSetupCLIExecutablePath, utility.SSMSetupCLIArtifactsFolderName)
if err != nil {
return fmt.Errorf("could not create temp folder in ssm setup cli executable path: %v", err)
}
if err = fileUtilMakeDirs(setupCLIArtifactsPath); err != nil {
return fmt.Errorf("could not create SSM Setup CLI directory: %v", err)
}
childDirectory := "child_"
setupCLIArtifactsPath, err = fileUtilCreateTemp(setupCLIArtifactsPath, childDirectory)
if err != nil {
return fmt.Errorf("could not create ssm setup cli artifacts temp directory in child folder: %v", err)
}
isNano, err := isPlatformNano(log)
if isNano {
log.Infof("Windows Nano platform detected")
}
// Initialize download manager
log.Infof("Initialize download manager")
downloadManager := getDownloadManager(log, region, manifestUrl, nil, setupCLIArtifactsPath, isNano)
if downloadManager == nil {
return fmt.Errorf("failed to intialize download manager")
}
if manifestUrl != "" {
if !strings.HasPrefix(manifestUrl, "https://") {
return fmt.Errorf("manifest url is not https")
}
}
version = strings.TrimSpace(version)
ssmSetupCLIPath := filepath.Join(ssmSetupCLIExecutablePath, utility.SSMSetupCLIBinary)
latestExecutableCheckSum, err := utilityCheckSum(ssmSetupCLIPath)
if err != nil {
return fmt.Errorf("error computing installed executable checksum: %v", err)
}
err = downloadManager.DownloadLatestSSMSetupCLI(setupCLIArtifactsPath, latestExecutableCheckSum)
if err != nil {
return fmt.Errorf("error while verifying installed ssm-setup-cli checksum: %v", err)
}
err = installAndVerifyAgent(log, packageManager, verificationManager, serviceManager, downloadManager, setupCLIArtifactsPath, isNano)
if err != nil {
return err
}
if register {
err = registerOnPrem(log, packageManager, serviceManager)
if err != nil {
return err
}
}
// sleeping for 5 seconds for the process to launch
timeSleep(5 * time.Second)
present, err := checkForSingleAgentProcesses(log)
if err != nil {
return fmt.Errorf("error while checking agent process count: %v", err)
}
if !present {
return fmt.Errorf("multiple/no processes found: %v", err)
}
log.Infof("Agent registration completed")
return nil
}
func installAndVerifyAgent(log log.T,
packageManager packagemanagers.IPackageManager,
verificationManager verificationmanagers.IVerificationManager,
serviceManager servicemanagers.IServiceManager,
downloadManager downloadmanager.IDownloadManager,
setupCLIArtifactsPath string,
isNano bool) error {
var targetAgentVersion string
// Check whether SSM-Setup-CLI is latest or not.
latestVersion, err := downloadManager.GetLatestVersion()
if err != nil {
return fmt.Errorf("failed to get latest version: %v", err)
}
if strings.EqualFold(version, utility.LatestVersionString) {
targetAgentVersion = latestVersion
}
// Check whether the requested target version is installed
var isAgentInstalled bool // This bool says that an agent is already installed
if isAgentInstalled, err = packageManager.IsAgentInstalled(); err != nil {
return fmt.Errorf("failed to get agent installation status: %v", err)
}
if !isAgentInstalled && strings.TrimSpace(version) == "" {
version = utility.StableVersionString
}
// Get stable version
var stableVersion string
if version == utility.StableVersionString {
stableVersion, err = downloadManager.GetStableVersion()
if err != nil {
return fmt.Errorf("failed to get stable version: %v", err)
}
targetAgentVersion = stableVersion
}
agentVersionInstalled, err := packageManager.GetInstalledAgentVersion()
if isAgentInstalled && agentVersionInstalled == "" {
return fmt.Errorf("error while getting installed agent version: %v", err)
}
if isAgentInstalled && targetAgentVersion == "" {
targetAgentVersion = agentVersionInstalled
}
log.Infof("Installed agent version - %v", agentVersionInstalled)
var isTargetAgentInstalled bool // This bool says that the target version is already installed
sourceVersionFilePaths, targetVersionFilePaths := "", ""
uninstallNeeded := false
if isAgentInstalled {
if strings.EqualFold(agentVersionInstalled, targetAgentVersion) {
log.Infof("Version already installed %v: ", targetAgentVersion)
isTargetAgentInstalled = true
} else if versionutil.Compare(agentVersionInstalled, targetAgentVersion, true) > 0 {
if downgrade == false {
return fmt.Errorf("downgrade flag is not set")
}
sourceVersionFilePaths = filepath.Join(setupCLIArtifactsPath, agentVersionInstalled)
if err = fileUtilMakeDirs(sourceVersionFilePaths); err != nil {
return fmt.Errorf("could not create source version directory: %v", err)
}
err = downloadManager.DownloadArtifacts(agentVersionInstalled, manifestUrl, sourceVersionFilePaths)
if err != nil {
return fmt.Errorf("error while downloading source agent: %v", err)
}
uninstallNeeded = true
}
}
if !isTargetAgentInstalled {
// Download target agent version artifacts
log.Infof("Started downloaded agent artifacts for version: %v", targetAgentVersion)
targetVersionFilePaths = filepath.Join(setupCLIArtifactsPath, targetAgentVersion)
if err = fileUtilMakeDirs(targetVersionFilePaths); err != nil {
return fmt.Errorf("could not update folder permissions: %v", err)
}
err = downloadManager.DownloadArtifacts(targetAgentVersion, manifestUrl, targetVersionFilePaths)
if err != nil {
return fmt.Errorf("error while downloading agent %v", err)
}
log.Infof("Successfully downloaded agent artifacts for version: %v", version)
if !skipSignatureValidation && verificationManager != nil {
fileExtension := packageManager.GetFileExtension()
// Download will happen only for Linux
signaturePath, err := downloadManager.DownloadSignatureFile(targetAgentVersion, targetVersionFilePaths, fileExtension)
if err != nil {
return fmt.Errorf("failed to download signature file %v", err)
}
log.Infof("Signature path: %v", signaturePath)
log.Infof("Start agent signature verification")
err = verificationManager.VerifySignature(log, signaturePath, targetVersionFilePaths, fileExtension)
if err != nil {
return fmt.Errorf("failed to verify signature file: %v", err)
}
log.Infof("Agent signature verification ended successfully")
}
}
if uninstallNeeded {
err = helperUnInstallAgent(log, packageManager, serviceManager, sourceVersionFilePaths)
if err != nil {
return fmt.Errorf("uninstallation failed for source version: %v", err)
}
timeSleep(2 * time.Second)
if isAgentInstalled, err = packageManager.IsAgentInstalled(); err != nil || isAgentInstalled {
return fmt.Errorf("failed to get agent installation status: %v", err)
}
}
log.Infof("Attempting to configure agent")
configManager := getConfigurationManager()
if err = configManager.CreateUpdateAgentConfigWithOnPremIdentity(); err != nil {
return fmt.Errorf("return failed to update agent config %v", err)
}
if !isTargetAgentInstalled {
log.Infof("Starting agent installation")
if err := helperInstallAgent(log, packageManager, serviceManager, targetVersionFilePaths); err != nil {
return fmt.Errorf("installation failed %v", err)
}
if isNano {
if err = startAgent(serviceManager, log); err != nil {
return fmt.Errorf("failed while starting agent: %v", err)
}
}
log.Infof("Agent installed successfully")
}
return nil
}
func registerOnPrem(log log.T, packageManager packagemanagers.IPackageManager, serviceManager servicemanagers.IServiceManager) error {
var err error
log.Info("Verifying agent is installed before attempting to register")
if isInstalled, err := packageManager.IsAgentInstalled(); err != nil {
return fmt.Errorf("agent has not started still")
} else if !isInstalled {
return fmt.Errorf("agent is not installed")
}
log.Info("Verified agent is installed")
registrationInfo := getRegistrationInfo()
instanceId := registrationInfo.InstanceID(log, "", registration.RegVaultKey)
if instanceId != "" {
log.Infof("Agent already registered with instance id: %s", instanceId)
} else {
log.Info("Agent is not registered")
}
if instanceId != "" && !override {
log.Info("skipping registration because override flag is not set, just starting agent back")
if err = startAgent(serviceManager, log); err != nil {
return fmt.Errorf("%v", err)
}
} else {
log.Infof("Stopping agent before registering")
if err = svcMgrStopAgent(serviceManager, log); err != nil {
return fmt.Errorf("failed to stop agent: %v", err)
}
log.Infof("Registering agent")
if err = getRegisterManager().RegisterAgent(registerInputModel); err != nil {
return fmt.Errorf("failed to register agent: %v", err)
}
log.Infof("Successfully registered the agent, starting agent")
if err = startAgent(serviceManager, log); err != nil {
return fmt.Errorf("failed to start agent: %v", err)
}
log.Infof("Successfully started agent, reloading registration info")
registrationInfo.ReloadInstanceInfo(log, "", registration.RegVaultKey)
instanceId = registrationInfo.InstanceID(log, "", registration.RegVaultKey)
if instanceId == "" {
return fmt.Errorf("failed to get new instance id from registration info after registration")
} else {
log.Infof("Successfully registered the instance with AWS SSM using Managed instance-id: %s", instanceId)
}
}
return err
}
func checkForSingleAgentProcesses(log log.T) (bool, error) {
processExecutor := newProcessExecutor(log)
processes, err := processExecutor.Processes()
if err != nil {
return false, fmt.Errorf("failure to get processes list: %v", err)
}
processCount := 0
for _, processName := range processes {
if strings.HasSuffix(strings.ToLower(processName.Executable), strings.ToLower(utility.AgentBinary)) {
log.Infof("Process Path: %v", strings.ToLower(processName.Executable))
processCount++
}
}
log.Infof("Agent process count: %v", processCount)
if processCount >= 2 || processCount == 0 {
return false, fmt.Errorf("invalid agent process count. Please uninstall additional processes")
}
return true, nil
}
func setVerifyGreenGrassParams(log log.T) {
// Environment variable overrides
if os.Getenv("SSM_ARTIFACTS_PATH") != "" {
artifactsDir = os.Getenv("SSM_ARTIFACTS_PATH")
}
if os.Getenv("AWS_REGION") != "" {
region = os.Getenv("AWS_REGION")
}
if os.Getenv("SSM_REGISTRATION_ROLE") != "" {
role = os.Getenv("SSM_REGISTRATION_ROLE")
}
if os.Getenv("SSM_RESOURCE_TAGS") != "" {
tags = os.Getenv("SSM_RESOURCE_TAGS")
}
if os.Getenv("SSM_OVERRIDE_EXISTING_REGISTRATION") == "true" {
override = true
}
if artifactsDir == "" {
// If artifactsDir is not set, assume we are supported to use where the binary is located
var err error
artifactsDir, err = getExecutableFolderPath()
if err != nil {
log.Warnf("Failed to get path of executable to set artifacts dir: %v", err)
}
}
verifyParams(log, greengrassParamVerification)
registerInputModel = ®istermanager.RegisterAgentInputModel{
Region: region,
Role: role,
Tags: tags,
}
}
func setVerifyOnpremParams(log log.T) {
verifyParams(log, onPremParamVerification)
registerInputModel = ®istermanager.RegisterAgentInputModel{
Region: region,
ActivationCode: activationCode,
ActivationId: activationId,
}
}
func setParams() {
flag.CommandLine = flag.NewFlagSet(os.Args[0], flag.ExitOnError)
flag.CommandLine.Usage = flagUsage
// This section of flags is for both Onprem and greengrass
flag.StringVar(&environment, "env", "", "")
flag.StringVar(®ion, "region", "", "")
flag.BoolVar(&help, "help", false, "")
// This section of flags is only for Onprem
flag.BoolVar(&install, "install", false, "")
flag.BoolVar(&shutdown, "shutdown", false, "")
flag.StringVar(&artifactsDir, "artifacts-dir", "", "")
// agent registration related flags
flag.BoolVar(®ister, "register", false, "")
flag.StringVar(&activationCode, "activation-code", "", "")
flag.StringVar(&activationId, "activation-id", "", "")
flag.BoolVar(&override, "override", false, "")
flag.StringVar(&role, "role", "", "")
flag.StringVar(&tags, "tags", "", "") // only for greengrass
// below flags only for onprem environment
flag.StringVar(&version, "version", "", "")
flag.StringVar(&manifestUrl, "manifest-url", "", "")
flag.BoolVar(&downgrade, "downgrade", false, "")
flag.BoolVar(&skipSignatureValidation, "skip-signature-validation", false, "")
flag.Parse()
}
func hasAgentAlreadyInstalled(versionStr string) (bool, error) {
val, err := versionutil.VersionCompare(versionStr, agentVersioning.Version)
if err != nil {
return false, fmt.Errorf("failed to compare with already installed agent version: %w", err)
}
return val == 0, nil
}
func getExecutableFolderPath() (string, error) {
ex, err := osExecutable()
if err != nil {
return "", err
}
exPath, err := evalSymLinks(filePathDir(ex))
if err != nil {
return "", err
}
return exPath, nil
}
func verifyParams(log log.T, additionalVerifier func() string) {
if flag.NFlag() == 0 || help {
flagUsage()
osExit(0, log, "")
}
log.Info("Setup parameters:")
log.Infof("env=%v", environment)
log.Infof("install=%v", install)
log.Infof("shutdown=%v", shutdown)
log.Infof("role=%v", role)
log.Infof("tags=%v", tags)
log.Infof("register=%v", register)
log.Infof("region=%v", region)
log.Infof("override=%v", override)
log.Infof("version=%v", version)
log.Infof("manifest-url=%v", manifestUrl)
log.Infof("artifactsDir=%v", artifactsDir)
log.Infof("skip-signature-validation=%v", skipSignatureValidation)
var errMessage string
errMessage += additionalVerifier()
if region == "" {
errMessage += "Region required. "
}
if errMessage != "" {
flagUsage()
osExit(1, log, "Invalid parameters - %v", errMessage)
}
}
func onPremParamVerification() string {
var errMessage string
if !register {
errMessage += "Action required (register). "
}
if activationId != "" || activationCode != "" {
if activationCode == "" {
errMessage += "Activation code required for on-prem registration. "
}
if activationId == "" {
errMessage += "Activation id required for on-prem registration. "
}
} else {
errMessage += "Activation id/code required for on-prem registration. "
}
return errMessage
}
func greengrassParamVerification() string {
var errMessage string
if artifactsDir == "" {
errMessage += "Artifacts directory required. "
}
if !install && !register && !shutdown {
errMessage += "Action required (install|register|shutdown). "
}
if register && role == "" {
errMessage += "Role required for registration. "
}
return errMessage
}
func flagUsage() {
fmt.Fprintln(os.Stderr, "\n-env \tInstruct cli what environment you are installing to ('greengrass'/'onprem'). Default set to 'onprem' \t(OPTIONAL)")
fmt.Fprintln(os.Stderr, "\nCommand-line Usage for ONPREM environment:")
fmt.Fprintln(os.Stderr, "\t-region \tRegion used for ssm agent download location and registration \t(REQUIRED)")
fmt.Fprintln(os.Stderr, "\t-version\tVersion of the ssm agent to download ('stable' or 'latest'). Default set to 'stable' if agent is not already installed \t(OPTIONAL)")
fmt.Fprintln(os.Stderr, "\t-downgrade\tSet when the agent needs to be downgraded \t(OPTIONAL but REQUIRED during downgrade)")
fmt.Fprintln(os.Stderr, "\t-skip-signature-validation\tSkip signature validation \t(OPTIONAL)")
fmt.Fprintln(os.Stderr, "\t-register \tRegister ssm agent if unregistered or override is set \t(REQUIRED)")
fmt.Fprintln(os.Stderr, "\t\t-activation-code \tSSM Activation Code for Onprem environment \t(REQUIRED and paired with activation-id)")
fmt.Fprintln(os.Stderr, "\t\t-activation-id \tSSM Activation ID for Onprem environment \t(REQUIRED and paired with Activation code)")
fmt.Fprintln(os.Stderr, "\t\t-override \t\tOverride existing registration if present \t(OPTIONAL)")
fmt.Fprintln(os.Stderr, "\nCommand-line Usage for GREENGRASS environment:")
fmt.Fprintln(os.Stderr, "\t-artifacts-dir \tDirectory for ssm agent install package and install/register scripts")
fmt.Fprintln(os.Stderr, "\t-region \tRegion used for ssm agent download location and registration")
fmt.Fprintln(os.Stderr, "\t-download \tDownload ssm agent install package based on platform")
fmt.Fprintln(os.Stderr, "\t-install \tInstall ssm agent based on platform")
fmt.Fprintln(os.Stderr, "\t-shutdown \tStop SSM Agent")
fmt.Fprintln(os.Stderr, "\t-register \tRegister ssm agent if unregistered or override is set")
fmt.Fprintln(os.Stderr, "\t\t-role \t\tRole ssm agent will be registered with \t(REQUIRED and paired with tags)")
fmt.Fprintln(os.Stderr, "\t\t-tags \t\tTags to attach to ssm instance on registrations \t(OPTIONAL and paired WITH role)")
fmt.Fprintln(os.Stderr, "\t\t-activation-code \tSSM Activation Code for Onprem environment \t\t(REQUIRED and paired with activation-id)")
fmt.Fprintln(os.Stderr, "\t\t-activation-id \tSSM Activation ID for Onprem environment \t\t(REQUIRED and paired with Activation code)")
fmt.Fprintln(os.Stderr, "\t\t-override \t\tOverride existing registration if present \t(OPTIONAL)")
fmt.Fprintln(os.Stderr, "\t\t-tags \t\tTags to attach to ssm instance on registrations \t(OPTIONAL)")
}
func initializeLogger() log.T {
// log to console
seelogConfig := `
<seelog type="sync">
<outputs>
<console formatid="fmtconsole"/>
</outputs>
<formats>
<format id="fmtconsole" format="%LEVEL %Msg%n"/>
</formats>
</seelog>
`
seelogger, _ := seelog.LoggerFromConfigAsBytes([]byte(seelogConfig))
loggerInstance := &logger.DelegateLogger{}
loggerInstance.BaseLoggerInstance = seelogger
formatFilter := &logger.ContextFormatFilter{Context: []string{}}
return &logger.Wrapper{Format: formatFilter, M: LogMutex, Delegate: loggerInstance}
}
func initializeLoggerForOnprem() log.T {
logFileName := filepath.Join(logger.DefaultLogDir, "ssm-setup-cli.log")
// log to console
seelogConfig := `
<seelog type="sync">
<exceptions>
<exception filepattern="test*" minlevel="error"/>
</exceptions>
<outputs formatid="fmtinfo">
<console formatid="fmtinfo"/>
<rollingfile type="size" filename="` + logFileName + `" maxsize="30000000" maxrolls="5"/>
</outputs>
<formats>
<format id="fmterror" format="%Date %Time %LEVEL [%FuncShort @ %File.%Line] %Msg%n"/>
<format id="fmtdebug" format="%Date %Time %LEVEL [%FuncShort @ %File.%Line] %Msg%n"/>
<format id="fmtinfo" format="%Date %Time %LEVEL %Msg%n"/>
</formats>
</seelog>
`
seelogger, _ := seelog.LoggerFromConfigAsBytes([]byte(seelogConfig))
loggerInstance := &logger.DelegateLogger{}
loggerInstance.BaseLoggerInstance = seelogger
formatFilter := &logger.ContextFormatFilter{Context: []string{}}
return &logger.Wrapper{Format: formatFilter, M: LogMutex, Delegate: loggerInstance}
}