AzureAutomation.psm1
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<#
LICENSE: The MIT License (MIT) Copyright (c) 2020 Preston K. Parsard Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. DISCLAIMER: THIS SAMPLE CODE AND ANY RELATED INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE. We grant You a nonexclusive, royalty-free right to use and modify the Sample Code and to reproduce and distribute the Sample Code, provided that You agree: (i) to not use Our name, logo, or trademarks to market Your software product in which the Sample Code is embedded; (ii) to include a valid copyright notice on Your software product in which the Sample Code is embedded; and (iii) to indemnify, hold harmless, and defend Us and Our suppliers from and against any claims or lawsuits, including attorneys’ fees, that arise or result from the use or distribution of the Sample Code. #> function New-AutomationAccountRunAsServicePrincipal { <# .SYNOPSIS Creates a new Azure Automation Account RunAs service principal. .DESCRIPTION This script creates a new Azure Automation Account RunAs service principal, which will be granted contributor level access at the subscription level to execute runbooks in the subscription that the automation account belongs to. In order for this script to create the RunAs account, the user or service principal context in which this script is executed, must have owner permissions to the specified subscription. .EXAMPLE New-AutomationAccountRunAsServicePrincipal -rgName <rgName> ` -AutomationAccountName <AutomationAccountName> ` -ApplicationDisplayName <ApplicationDisplayName> ` -SubscriptionId <SubscriptionId> ` -SelfSignedCertPlainPassword <SelfSignedCertPlainPassword> ` -SelfSignedCertNoOfMonthsUntilExpired <NumberOfMonthsForCerificateExpiry> ` -Verbose .PARAMETER rgName The resource group name in which the Azure automation account resides. .PARAMETER AutomationAccountName The Azure automaiton account name for which the RunAs account will be provisioned. .PARAMETER SubscriptionId The subscription ID for the subscription that the automation account belongs to. .PARAMETER SelfSignedCertPlainPassword The user supplied password for the self-signed certificate that will be associated with the RunAs service principal .PARAMETER SelfSignedCertNoOfMonthsUntilExpired The certificate expiration period in months. The default is 12. .INPUTS None .OUTPUTS None .NOTES AUTHOR: Preston K. Parsard KEYWORDS: Azure Automation, Certificate, RunAs, Runbooks .LINK 1: https://www.powershellgallery.com/packages/AzureAutomation 2: https://docs.microsoft.com/en-us/azure/automation/manage-runas-account #> [CmdletBinding()] Param ( [Parameter(Mandatory = $true)] [String] $rgName, [Parameter(Mandatory = $true)] [String] $AutomationAccountName, [Parameter(Mandatory = $true)] [String] $ApplicationDisplayName, [Parameter(Mandatory = $true)] [String] $SubscriptionId, [Parameter(Mandatory = $true)] [String] $SelfSignedCertPlainPassword, [int] $SelfSignedCertNoOfMonthsUntilExpired = 12 ) # end param # Create self-signed certificate function New-SelfSignedCertificateForRunAsAccount { param ( [string] $CertificateAssetName, [string] $SelfSignedCertPlainPassword, [string] $certPath, [string] $certPathCer, [string] $selfSignedCertNoOfMonthsUntilExpired ) # end param $Cert = New-SelfSignedCertificate -DnsName $$CertificateAssetName ` -CertStoreLocation cert:\LocalMachine\My ` -KeyExportPolicy Exportable ` -Provider "Microsoft Enhanced RSA and AES Cryptographic Provider" ` -NotAfter (Get-Date).AddMonths($selfSignedCertNoOfMonthsUntilExpired) ` -HashAlgorithm SHA256 $CertPassword = ConvertTo-SecureString $selfSignedCertPlainPassword -AsPlainText -Force Export-PfxCertificate -Cert ("Cert:\localmachine\my\" + $Cert.Thumbprint) -FilePath $certPath -Password $CertPassword -Force | Write-Verbose Export-Certificate -Cert ("Cert:\localmachine\my\" + $Cert.Thumbprint) -FilePath $certPathCer -Type CERT | Write-Verbose } # end function # Create the RunAs Account function New-ServicePrincipalForRunAsAccount { [OutputType([string])] [CmdletBinding()] param ( [System.Security.Cryptography.X509Certificates.X509Certificate2] $PfxCert, [string] $ApplicationDisplayName ) # end param $keyValue = [System.Convert]::ToBase64String($PfxCert.GetRawCertData()) $keyId = (New-Guid).Guid # Create an Azure AD application, AD App Credential, AD ServicePrincipal $homePage = "www." + $ApplicationDisplayName.ToLower() + ".com" # Requires Application Developer Role, but works with Application administrator or GLOBAL ADMIN New-AzADApplication -DisplayName $ApplicationDisplayName -HomePage ("http://" + $homePage) -IdentifierUris ("http://" + $keyId) $applicationId = (Get-AzAdApplication -DisplayName $ApplicationDisplayName | Where-Object {$_.IdentifierUris[0] -match $keyId}).ApplicationId.guid # Requires Application administrator or GLOBAL ADMIN # $ApplicationCredential = New-AzADAppCredential -ApplicationId $Application.ApplicationId -CertValue $keyValue -StartDate $PfxCert.NotBefore -EndDate $PfxCert.NotAfter New-AzADAppCredential -ApplicationId $applicationId -CertValue $keyValue -StartDate $PfxCert.NotBefore -EndDate $PfxCert.NotAfter # Requires Application administrator or GLOBAL ADMIN New-AzADServicePrincipal -ApplicationId $applicationId # New-AzADServicePrincipal -ApplicationId $Application.ApplicationId -PasswordCredential $ApplicationCredential # $servicePrincipalObj = Get-AzADServicePrincipal -ObjectId $ServicePrincipal.Id # Sleep here for a few seconds to allow the service principal application to become active (ordinarily takes a few seconds) Start-Sleep -Seconds 15 # Requires User Access Administrator or Owner. $NewRole = New-AzRoleAssignment -ApplicationId $applicationId -RoleDefinitionName Contributor -ErrorAction SilentlyContinue $Retries = 0; While (($Retries -le 6) -and ($NewRole.RoleAssignmentId -eq $null)) { Start-Sleep -Seconds 10 $NewRole = Get-AzRoleAssignment -ServicePrincipalName $applicationId -ErrorAction SilentlyContinue $Retries++; } # end while return $applicationId } # end function # Create the certificate asset function New-AutomationCertificateAsset { param ( [string] $resourceGroup, [string] $automationAccountName, [string] $certificateAssetName, [string] $certPath, [string] $certPlainPassword, [Boolean] $Exportable ) # end param $CertPassword = ConvertTo-SecureString $certPlainPassword -AsPlainText -Force Remove-AzAutomationCertificate -ResourceGroupName $resourceGroup -AutomationAccountName $automationAccountName -Name $certificateAssetName -ErrorAction SilentlyContinue -Verbose New-AzAutomationCertificate -AutomationAccountName $automationAccountName -Name $certificateAssetName -Path $certPath -Description $certificateAssetName -Password $CertPassword -ResourceGroupName $resourceGroup -Exportable:$Exportable | write-verbose } # end function # Create the connection asset function New-AutomationConnectionAsset { param ( # Had to overwrite the value for the $resourceGroup parameter and then later extract a substring of 19 characters to avoid the issue filed at: # https://windowsserver.uservoice.com/forums/301869-powershell/suggestions/38585344-new-azautomationconnection-cmdlet-incorrectly-stat [string] $resourceGroup, [string] $automationAccountName, [string] $connectionAssetName, [string] $connectionTypeName, [System.Collections.Hashtable] $connectionFieldValues ) # end params Remove-AzAutomationConnection -ResourceGroupName $resourceGroup -AutomationAccountName $automationAccountName -Name $connectionAssetName -Force -ErrorAction SilentlyContinue -Verbose New-AzAutomationConnection -ResourceGroupName $resourceGroup -AutomationAccountName $automationAccountName -Name $connectionAssetName -ConnectionTypeName $connectionTypeName -ConnectionFieldValues $connectionFieldValues } # end function # Create a Run As account by using a service principal $CertificateAssetName = "AzureRunAsCertificate" $ConnectionAssetName = "AzureRunAsConnection" $ConnectionTypeName = "AzureServicePrincipal" $PfxCertPathForRunAsAccount = Join-Path $env:TEMP -ChildPath ($CertificateAssetName + ".pfx") $PfxCertPlainPasswordForRunAsAccount = $SelfSignedCertPlainPassword $CerCertPathForRunAsAccount = Join-Path $env:TEMP -ChildPath ($CertificateAssetName + ".cer") New-SelfSignedCertificateForRunAsAccount -CertificateAssetName $CertificateAssetName ` -SelfSignedCertPlainPassword $SelfSignedCertPlainPassword ` -certPath $PfxCertPathForRunAsAccount ` -certPathCer $CerCertPathForRunAsAccount ` -selfSignedCertNoOfMonthsUntilExpired $SelfSignedCertNoOfMonthsUntilExpired # Create the Automation certificate asset New-AutomationCertificateAsset -resourceGroup $rgName ` -automationAccountName $AutomationAccountName ` -certificateAssetName $CertificateAssetName ` -certPath $PfxCertPathForRunAsAccount ` -certPlainPassword $PfxCertPlainPasswordForRunAsAccount ` -Exportable $true # Wait for 2 minutes to avoid a race condition to allow the RunAs Account time to populate the certificate attributes. Start-Sleep -Seconds 120 # Create a service principal $PfxCert = New-Object -TypeName System.Security.Cryptography.X509Certificates.X509Certificate2 -ArgumentList @($PfxCertPathForRunAsAccount, $PfxCertPlainPasswordForRunAsAccount) $applicationId = New-ServicePrincipalForRunAsAccount -PfxCert $PfxCert -applicationDisplayName $ApplicationDisplayName [guid]$applicationId = ($applicationId)[0].ApplicationId # Populate the ConnectionFieldValues $SubscriptionInfo = Get-AzSubscription -SubscriptionId $SubscriptionId $TenantID = $SubscriptionInfo | Select-Object TenantId -First 1 $Thumbprint = $PfxCert.Thumbprint $ConnectionFieldValues = @{"ApplicationId" = $applicationId; "TenantId" = $TenantID.TenantId; "CertificateThumbprint" = $Thumbprint; "SubscriptionId" = $SubscriptionId} # Create an Automation connection asset named AzureRunAsConnection in the Automation account. This connection uses the service principal. New-AutomationConnectionAsset -resourceGroup $rgName ` -automationAccountName $AutomationAccountName ` -connectionAssetName $ConnectionAssetName ` -ConnectionTypeName $ConnectionTypeName ` -ConnectionFieldValues $ConnectionFieldValues # Cleanup temporary certificate files from local file system Remove-Item -Path $env:TEMP -Include *.pfx, *.cer -Force -Verbose } # end function function Publish-AutomationAccountRunbookScripts { <# .SYNOPSIS Uploads and publishes a set of runbook scripts to an automation account. .DESCRIPTION This function uploads and publishes a set of PowerShell runbook scripts to an Azure Automation account so they can be executed manually, triggered by an event, or scheduled. .EXAMPLE Publish-AutomationAccountRunbookScripts -rbScripts <rbScripts> -ResourceGroupName <ResourceGroupName> -Verbose .PARAMETER rbScripts The array of full runboook script paths to publish. .PARAMETER ResourceGroupName The Azure resource group name hosting the automation account where the runbooks will be published to. .INPUTS None .OUTPUTS None .NOTES AUTHOR: Preston K. Parsard KEYWORDS: Azure Automation, Runbooks, Publish .LINK 1: https://www.powershellgallery.com/packages/AzureAutomation #> [CmdletBinding()] param ( [parameter(Mandatory)] [ValidateNotNullOrEmpty()] [string[]]$rbScripts, [parameter(Mandatory)] [ValidateNotNullOrEmpty()] [string]$ResourceGroupName, [parameter(Mandatory)] [ValidateNotNullOrEmpty()] [string]$AutomationAccountName ) # end param ForEach ($runbookScript in $runbookScripts) { Import-AzAutomationRunbook -ResourceGroupName $ResourceGroupName -AutomationAccountName $AutomationAccountName -Path $runbookScript -Type PowerShell -LogProgress $true -LogVerbose $true -Published -Verbose } # end foreach } # end function function New-AutomationAccountRunbookModules { <# .SYNOPSIS Imports module assets into an Azure automation account. .DESCRIPTION This function imports modules from the public https://www.powershellgallery.com repository, into a specified Azure automation account as a module asset to support runbooks or state configuration scripts. .EXAMPLE New-AutomationAccountRunbookModules -ResourceGroupName <ResourceGroupName> -runbookModules <runbookModules> .PARAMETER ResourceGroupName The resource group hosting the Azure automation account where the modules will be imported into. .PARAMETER runbookModules The array of runbook modules that will be imported into the specified aut .PARAMETER AutomationAccountName The Azure automation account that the modules will be imported into as module assets. .INPUTS None .OUTPUTS None .NOTES AUTHOR: Preston K. Parsard KEYWORDS: Modules, Azure Automation, Assets .LINK 1: https://www.powershellgallery.com/packages/AzureAutomation 2: https://mcpmag.com/articles/2018/09/27/upload-powershell-gallery-module-to-azure.aspx #> [CmdletBinding()] param ( [parameter(Mandatory)] [ValidateNotNullOrEmpty()] [string] $ResourceGroupName, [parameter(Mandatory)] [ValidateNotNullOrEmpty()] [string[]] $runbookModules, [parameter(Mandatory)] [ValidateNotNullOrEmpty()] [string] $AutomationAccountName ) # end param $i = 0 $preReqModule = "Az.Accounts" $repoUriPrefix = (Find-Module -Name $preReqModule -Repository PSGallery).RepositorySourceLocation $repoUriInfix = "/package/" ForEach ($runbookModule in $runbookModules) { $i++ If ($i -eq 1) { $runbookModule = $preReqModule $uri = $repoUriPrefix + $repoUriInfix + $runbookModule New-AzAutomationModule -ResourceGroupName $ResourceGroupName -AutomationAccountName $AutomationAccountName -Name $runbookModule -ContentLinkUri $uri -Verbose -ErrorAction SilentlyContinue } # end if ElseIf ($runbookModule -ne $preReqModule) { $uri = $repoUriPrefix + $repoUriInfix + $runbookModule New-AzAutomationModule -ResourceGroupName $ResourceGroupName -AutomationAccountName $AutomationAccountName -Name $runbookModule -ContentLinkUri $uri -Verbose -ErrorAction SilentlyContinue } # end else if # Wait for 4 minutes Start-Sleep -Seconds 240 } # end foreach } # end function function Format-AutomationAccountScheduleTimeZoneOffset { <# .SYNOPSIS Convert the current UTC offset of the local time zone (i.e. -5 for EST US) into the runbook time scheduling format: "yyyy-MM-ddT00:00:00-00:00" .DESCRIPTION This function will detect the current UTC offset based on the local system time from where the script executes, and convert it to the required Azure Automation Account schedule format so that runbooks can be scheduled. .EXAMPLE Format-AutomationAccountScheduleTimeZoneOffset -offset <offset> .PARAMETER offset The current UTC offset of the local system time zone from where the script executes (i.e. If the script runs from a machine in the US Eastern Standard Time zone <EST>, the offset would be "-5") .INPUTS None .OUTPUTS None .NOTES AUTHOR: Preston K. Parsard KEYWORDS: NSG, Network Security Group, Subnet .LINK 1: https://www.powershellgallery.com/ARMDeploy #> [OutputType([string])] [CmdletBinding()] param ( [ValidateLength(1,3)] [string]$offset ) # end param if ($offset -match "-") { $offset = $offset.Remove(0,1) If ($offset.Length -eq 1) { $offset = $offset.Insert(0,"-0") } # end if elseif ($offset.Length -eq 2) { $offset = $offset.Insert(0,"-") } # end else } # end if elseif ($offset -notmatch "-") { if ($offset.Length -eq 1) { $offset = $offset.Insert(0,"+0") } # end if elseif ($offset.Length -eq 2) { $offset = $offset.Insert(0,"+") } # end else } # end else if return $offset } # end function Export-ModuleMember -Function *AutomationAccount* -Verbose |