AWS Cloudformation：无法在 cfn-init 或 UserData 中访问网络共享驱动器

Question

I am trying to copy files from a.network share drive upon launching the EC2 instance in cloudformation:

Resources:
     MigrationInstance:
        Type: 'AWS::EC2::Instance'
        Properties:
          ...
          UserData:
            Fn::Base64: !Sub |
              <powershell>
              New-Item "C:\migratedFiles" -itemType Directory

              #Copy-Item -Path \\192.168.41.103\shared\* -Destination C:\migratedFiles -Recurse -Force # also don't work

              cfn-init.exe --verbose --stack ${AWS::StackName} --resource MigrationInstance --region ${AWS::Region}
              </powershell>
              <persist>true</persist>
        Metadata: 
          AWS::CloudFormation::Init: 
            config:
              files:
                C:\windows\temp\copyfiles.ps1:
                  content: !Sub |
                    $sourcePathExist = Test-Path \\192.168.41.103\shared
                    if($sourcePathExist) #this is always false
                    {
                      # Copy-Item -Path \\192.168.41.103\shared\* -Destination C:\migratedFiles -Recurse -Force
                      xcopy \\192.168.41.103\shared C:\migratedFiles /E /H /C /I
                      
                      Write-Output "Migrate files success"
                    }
                    else 
                    {
                        Write-Warning "Migrate files failed"
                    }
                    
              commands:
                1-RunCopyFiles:
                  command:
                    powershell.exe -executionpolicy bypass -file "C:\windows\temp\copyfiles.ps1"
                  waitAfterCompletion: 'forever'

But it seems like the shared folder is not accessible in cfn-init as Test-Path \\192.168.41.103\shared returns false ..

But when I manually run the Test-Path in the EC2 instance - it returns true and the xcopy command works

xcopy \\192.168.41.103\shared C:\migratedFiles /E /H /C /I

It seems to me that the shared drive is not accessible in UserData and cfn-init . But it is accessible when you SSM into the instance and manually run the command there (the xcopy works and the test-path returns true ). I wonder why is this the case?

Answer 1

So it turns out the instance need to be joined to the AD domain. But still confusing why I can access it from Ec2 manually even if its not domain joined.