PowerShell 技能连载 - Terraform 多云环境集成与自动化

function Invoke-TerraformMultiCloud {
    [CmdletBinding(SupportsShouldProcess=$true)]
    param(
        [Parameter(Mandatory=$true)]
        [ValidateSet('Azure','AWS','GCP')]
        [string[]]$CloudProviders,
        
        [string]$TfWorkingDir = '$PSScriptRoot/terraform'
    )

    $stateReport = [PSCustomObject]@{
        Timestamp = Get-Date -Format 'yyyy-MM-dd HH:mm:ss'
        DeploymentStatus = @{}
        ResourceCounts = @{}
        CrossCloudDependencies = @()
    }

    try {
        # 初始化多供应商terraform工作区
        $CloudProviders | ForEach-Object {
            if ($PSCmdlet.ShouldProcess("Initialize $_ provider")) {
                terraform -chdir=$TfWorkingDir init -backend-config="$_backend.hcl"
            }
        }

        # 执行跨云资源编排
        $planOutput = terraform -chdir=$TfWorkingDir plan -out=multicloud.tfplan
        $stateReport.DeploymentStatus['Plan'] = $planOutput -match 'No changes' ? 'Stable' : 'Pending'

        # 自动化应用配置
        if ($planOutput -match 'to add') {
            $applyOutput = terraform -chdir=$TfWorkingDir apply -auto-approve multicloud.tfplan
            $stateReport.DeploymentStatus['Apply'] = $applyOutput -match 'Apply complete' ? 'Success' : 'Failed'
        }

        # 获取跨云资源状态
        $tfState = terraform -chdir=$TfWorkingDir show -json | ConvertFrom-Json
        $stateReport.ResourceCounts = $tfState.resources | 
            Group-Object provider_name | 
            ForEach-Object {@{$_.Name = $_.Count}} 

        # 分析云间依赖关系
        $stateReport.CrossCloudDependencies = $tfState.resources | 
            Where-Object { $_.depends_on -match 'aws_|azurerm_' } | 
            Select-Object type, provider
    }
    catch {
        Write-Error "多云部署失败: $_"
        terraform -chdir=$TfWorkingDir destroy -auto-approve
    }

    # 生成基础设施即代码报告
    $stateReport | Export-Csv -Path "$env:TEMP/MultiCloudReport_$(Get-Date -Format yyyyMMdd).csv"
    return $stateReport
}

核心功能：

1. 多云供应商统一编排
2. 基础设施配置自动化管理
3. 跨云依赖关系可视化
4. 部署状态实时跟踪

应用场景：

• 混合云资源统一管理
• 跨云平台灾备方案实施
• 多云成本优化分析
• 基础设施合规检查