Azure DevOps - 自定义任务 - 具有 Azure 身份验证的 PowerShell

到目前为止，我使用 Azure PowerShell 任务在 Azure 上下文中执行 PowerShell 脚本（https://learn.microsoft.com/en-us/azure/devops/pipelines/tasks/deploy/azure-powershell?view=vsts https://learn.microsoft.com/en-us/azure/devops/pipelines/tasks/deploy/azure-powershell?view=vsts）。由于泛化工作，我现在想创建一个自定义任务（参见例如http://www.donovanbrown.com/post/how-do-i-upload-a-custom-task-for-build http://www.donovanbrown.com/post/how-do-i-upload-a-custom-task-for-build）在 Azure 上下文中运行 PowerShell 脚本，即针对 Azure DevOps 中的连接终结点进行身份验证。

我怎样才能实现这个目标？

首先，您需要一个服务主体（参见例如https://learn.microsoft.com/en-us/powershell/azure/create-azure-service-principal-azureps?view=azps-1.1.0 https://learn.microsoft.com/en-us/powershell/azure/create-azure-service-principal-azureps?view=azps-1.1.0）和服务连接（参见例如https://learn.microsoft.com/en-us/azure/devops/pipelines/library/connect-to-azure?view=vsts https://learn.microsoft.com/en-us/azure/devops/pipelines/library/connect-to-azure?view=vsts).

在自定义任务中task.json添加一个输入以便能够选择服务连接：

"inputs": [
        {
            "name": "ConnectedServiceName",
            "type": "connectedService:AzureRM",
            "label": "Azure RM Subscription",
            "defaultValue": "",
            "required": true,
            "helpMarkDown": "Select the Azure Resource Manager subscription for the deployment."
        }
]

在任务（powershell 脚本）中，您通过以下方式获取此输入

$serviceNameInput = Get-VstsInput -Name ConnectedServiceNameSelector -Default 'ConnectedServiceName'
$serviceName = Get-VstsInput -Name $serviceNameInput -Default (Get-VstsInput -Name DeploymentEnvironmentName)

然后验证：

try {
    $endpoint = Get-VstsEndpoint -Name $serviceName -Require
    if (!$endpoint) {
        throw "Endpoint not found..."
    }
    $subscriptionId = $endpoint.Data.SubscriptionId
    $tenantId = $endpoint.Auth.Parameters.TenantId
    $servicePrincipalId = $endpoint.Auth.Parameters.servicePrincipalId
    $servicePrincipalKey = $endpoint.Auth.Parameters.servicePrincipalKey

    $spnKey = ConvertTo-SecureString $servicePrincipalKey -AsPlainText -Force
    $credentials = New-Object System.Management.Automation.PSCredential($servicePrincipalId,$spnKey)

    Add-AzureRmAccount -ServicePrincipal -TenantId $tenantId -Credential $credentials
    Select-AzureRmSubscription -SubscriptionId $subscriptionId -Tenant $tenantId

    $ctx = Get-AzureRmContext
    Write-Host "Connected to subscription '$($ctx.Subscription)' and tenant '$($ctx.Tenant)'..."
} catch {
    Write-Host "Authentication failed: $($_.Exception.Message)..." 
}

Edit:

清除脚本开头和结尾处的上下文很有用。你可以通过以下方式做到这一点

Clear-AzureRmContext -Scope Process
Disable-AzureRmContextAutosave

在开始时和

Disconnect-AzureRmAccount -Scope Process
Clear-AzureRmContext -Scope Process

在最后。