CODEWITHSUNDEEP
azurepowershellazure-powershellazure-vm-templatesazure-vm-extension
Bartolini
Bartolini

Reputation: 21

Azure VM, extension script in powershell, how to pass as a parameter json object

I have a script in Powershell, I would like to run it as a script extension in Azure VM. The script is supposed to download various things, and the configuration would enter it as an object. What can I try next? I have a problem passing an object from a json file to it.

Error:

 at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(Newtonsoft.Json.JsonWriter, System.Object, Newtonsoft.Json.Serialization.JsonObjectContract, Newtonsoft.Json.Serialization.JsonProperty, Newtonsoft.Json.Serialization.JsonContainerContract, Newtonsoft.Json.Serialization.JsonProperty)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(Newtonsoft.Json.JsonWriter, System.Object, Newtonsoft.Json.Serialization.JsonObjectContract, Newtonsoft.Json.Serialization.JsonProperty, Newtonsoft.Json.Serialization.JsonContainerContract, Newtonsoft.Json.Serialization.JsonProperty)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(Newtonsoft.Json.JsonWriter, System.Object, Newtonsoft.Json.Serialization.JsonObjectContract, Newtonsoft.Json.Serialization.JsonProperty, Newtonsoft.Json.Serialization.JsonContainerContract, Newtonsoft.Json.Serialization.JsonProperty)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(Newtonsoft.Json.JsonWriter, System.Object, Newtonsoft.Json.Serialization.JsonObjectContract, Newtonsoft.Json.Serialization.JsonProperty, Newtonsoft.Json.Serialization.JsonContainerContract, Newtonsoft.Json.Serialization.JsonProperty)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(Newtonsoft.Json.JsonWriter, System.Object, Newtonsoft.Json.Serialization.JsonObjectContract, Newtonsoft.Json.Serialization.JsonProperty, Newtonsoft.Json.Serialization.JsonContainerContract, Newtonsoft.Json.Serialization.JsonProperty)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(Newtonsoft.Json.JsonWriter, System.Object, Newtonsoft.Json.Serialization.JsonObjectContract, Newtonsoft.Json.Serialization.JsonProperty, Newtonsoft.Json.Serialization.JsonContainerContract, Newtonsoft.Json.Serialization.JsonProperty)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(Newtonsoft.Json.JsonWriter, System.Object, Newtonsoft.Json.Serialization.JsonObjectContract, Newtonsoft.Json.Serialization.JsonProperty, Newtonsoft.Json.Serialization.JsonContainerContract, Newtonsoft.Json.Serialization.JsonProperty)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(Newtonsoft.Json.JsonWriter, System.Object, Newtonsoft.Json.Serialization.JsonObjectContract, Newtonsoft.Json.Serialization.JsonProperty, Newtonsoft.Json.Serialization.JsonContainerContract,
at System.Management.Automation.PipelineOps.InvokePipeline(System.Object, Boolean, System.Management.Automation.CommandParameterInternal[][], System.Management.Automation.Language.CommandBaseAst[], System.Management.Automation.CommandRedirection[][], System.Management.Automation.Language.FunctionContext)
   at System.Management.Automation.Interpreter.ActionCallInstruction`6[[System.__Canon, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.Boolean, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.__Canon, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.__Canon, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.__Canon, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.__Canon, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.Interpreter.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.LightLambda.RunVoid1[[System.__Canon, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]](System.__Canon)
   at System.Management.Automation.PSScriptCmdlet.RunClause(System.Action`1<System.Management.Automation.Language.FunctionContext>, System.Object, System.Object)
   at System.Management.Automation.CommandProcessorBase.Complete()
   at System.Management.Automation.CommandProcessorBase.DoComplete()
   at System.Management.Automation.Internal.PipelineProcessor.DoCompleteCore(System.Management.Automation.CommandProcessorBase)
   at System.Management.Automation.Internal.PipelineProcessor.SynchronousExecuteEnumerate(System.Object)
   at System.Management.Automation.PipelineOps.InvokePipeline(System.Object, Boolean, System.Management.Automation.CommandParameterInternal[][], System.Management.Automation.Language.CommandBaseAst[], System.Management.Automation.CommandRedirection[][], System.Management.Automation.Language.FunctionContext)
   at System.Management.Automation.Interpreter.ActionCallInstruction`6[[System.__Canon, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.Boolean, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.__Canon, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.__Canon, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.__Canon, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.__Canon, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.Interpreter.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.LightLambda.RunVoid1[[System.__Canon, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]](System.__Canon)
   at System.Management.Automation.DlrScriptCommandProcessor.RunClause(System.Action`1<System.Management.Automation.Language.FunctionContext>, System.Object, System.Object)
   at System.Management.Automation.DlrScriptCommandProcessor.Complete()
   at System.Management.Automation.CommandProcessorBase.DoComplete()
   at System.Management.Automation.Internal.PipelineProcessor.DoCompleteCore(System.Management.Automation.CommandProcessorBase)
   at System.Management.Automation.Internal.PipelineProcessor.SynchronousExecuteEnumerate(System.Object)
   at System.Management.Automation.Runspaces.LocalPipeline.InvokeHelper()
   at System.Management.Automation.Runspaces.LocalPipeline.InvokeThreadProc()
   at System.Management.Automation.Runspaces.PipelineThread.WorkerProc()
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)

[process exited with code 3221225725 (0xc00000fd)]
You can now close this terminal with Ctrl+D, or press Enter to restart.

Json file:

{
  "parameters": {
    "keyVault": {
      "value": {
        "name": "kv-name",
        "subscriptionId": "00000-0000-0000-0000"
      }
    },
    "certificates": {
      "value": [
        {
          "name": "application-certificate",
          "SaveTo": "C:\\Temp2\\"
        },
        {
          "name": "client-certificate",
          "SaveTo": "C:\\Temp\\"
        }
      ]
    },
    "secrets": {
      "value": [
        {
          "name": "secret1",
          "secretName": "secret1"
        },
        {
          "name": "secret2",
          "secretName": "mysecret2"
        },
        {
          "name": "Save certificate password",
          "secretName": "certificatePassword"
        }
      ]
    },
    "configCentralUri": {
      "value": "https://configcentral.adeo.local"
    }
  }
}

PowerShell script creating VM:

[CmdletBinding()]
param
(
  [Parameter()]
  [string]$VMRGName = 'rg-change-me', 
  $Location = 'westeurope',
  $VMName = 'myvm',
  [Parameter(Mandatory = $false)]
  $Object
)
$blobSasUrl = 'https://....'
$blobName = 'myscript.ps1'

$customScriptParam = @{
  ResourceGroupName  = $VMRGName
  Location           = $Location
  VMName             = $VMName
  Name               = 'ConfigurationScript'
  Publisher          = 'Microsoft.Compute'
  ExtensionType      = 'CustomScriptExtension'
  TypeHandlerVersion = '1.1'
  Settings           = @{
    'scriptBlobSasUri' = $blobSasUrl
    'commandToExecute' = "powershell -ExecutionPolicy Unrestricted -File $blobName -config '$Object'"
  }
}
Set-AzVMExtension @customScriptParam

Last my actions:

$config = gc .\parameters.json | ConvertFrom-Json -Depth 10
$configRAW = ($config |  convertto-json -Depth 10 -Compress).replace('"','\"')
.\createVM.ps1 -Object $configRAW

Upvotes: 0

Views: 67

Answers (1)

Venkat V
Venkat V

Reputation: 7614

Azure VM, extension script in powershell, how to pass as a parameter json object

The error you are getting is due to the JSON object being serialized and passed to the PowerShell script.

You can use the below PowerShell script and JSON file to pass the JSON object into the script from the Azure storage account

myscript.ps1

[CmdletBinding()]
param (
    [string]$configFile
)

$logFile = "C:\Temp\script.log"
if (-not (Test-Path "C:\Temp")) { New-Item -ItemType Directory -Path "C:\Temp" }

function Log {
    param([string]$message)
    Add-Content -Path $logFile -Value "$(Get-Date) - $message"
}

try {
    Log "Starting script execution."
    $config = Get-Content $configFile | ConvertFrom-Json
    Log "Config loaded successfully: $(ConvertTo-Json $config -Depth 10)"
} catch {
    Log "Error: $_"
}

parameters.json

{
  "parameters": {
    "keyVault": {
      "value": {
        "name": "kv-name",
        "subscriptionId": "00000-0000-0000-0000"
      }
    },
    "certificates": {
      "value": [
        {
          "name": "application-certificate",
          "SaveTo": "C:\\Temp2\\"
        },
        {
          "name": "client-certificate",
          "SaveTo": "C:\\Temp\\"
        }
      ]
    },
    "secrets": {
      "value": [
        {
          "name": "secret1",
          "secretName": "secret1"
        },
        {
          "name": "secret2",
          "secretName": "mysecret2"
        },
        {
          "name": "Save certificate password",
          "secretName": "certificatePassword"
        }
      ]
    },
    "configCentralUri": {
      "value": "https://configcentral.adeo.local"
    }
  }
}

Make sure to upload the parameters.json and myscript.ps1 files to Azure Storage and fetch the SAS URL from the particular blob

enter image description here

Generate a SAS URL for parameters.json from the blob, just like you generate one for the myscript.ps1* blob.

enter image description here

blobSasUrl generation

enter image description here

VM Extension Script

$blobSasUrl = "https://venkatstoragetestdemo.blob.core.windows.net/venkat?sp=racwdli&st=2024-11-20T10:30:05Z&fffffffffffdjfjf:30:05Z&sv=2022-11-02&sr=c&sig=ghghghghggOpN6sqEYvpW17sUe0jA50JGP4bauvJkok%3D"

$jsonSasUrl = "https://venkatstoragetestdemo.blob.core.windows.net/venkat/parameters.json?sp=racwdyt&st=2024-11-20T10:32:0221102&sr=b&sig=FSXGWjNLSgOWTzrsi8lkSDvCp9fTp0s%3D"

$scriptSasUrl = "https://venkatstoragetestdemo.blob.core.windows.net/venkat/myscript.ps1?sp=racwdyt&st=2024-11-20T10:31:43Z&sefKSPprtjI%3D"

Set-AzVMExtension -ResourceGroupName "container-RG" -VMName "Container-VM" -Name "ConfigurationScript" `
    -Publisher "Microsoft.Compute" -ExtensionType "CustomScriptExtension" -TypeHandlerVersion "1.10" `
    -Settings @{
        "scriptBlobSasUri" = $blobSasUrl
        "commandToExecute" = "powershell -ExecutionPolicy Unrestricted -File myscript.ps1 -configFile parameters.json"
    } `
    -ProtectedSettings @{
        "fileUris" = @($scriptSasUrl, $jsonSasUrl) 
    }

Output

enter image description here

After running the script, both myscript.ps1 and parameters.json files have been downloaded to the VM from the storage account

enter image description here

The script log file has been created on the VM after the VM extension created.

enter image description here

Upvotes: 1

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