【Azure 应用服务】Azure Function 中运行Powershell 脚本,定位 -DefaultProfile 引发的错误

问题描述

突然之间,使用PowerShell脚本 Get-AzVirtualNetwork 获取虚拟网络信息时,如果带上  -DefaultProfile $sub 参数,就出现 Azure credentials 错误。

代码:

Connect-AzAccount -ServicePrincipal -Credential $pscredential -Tenant $cloudroomTenantId -Environment $region

$sub = Set-AzContext -SubscriptionId $cloudroomId -Tenant $cloudroomTenantId

Get-AzVirtualNetwork -Name $VNetName -ResourceGroupName $ResourceGroupName -DefaultProfile $sub -ErrorAction "SilentlyContinue"

 

错误消息:

ERROR: Your Azure credentials have not been set up or have expired, please run Connect-AzAccount to set up your Azure credentials.No certificate thumbprint or secret provided for the given service principal

 

这是为什么呢?

问题分析

根据错误消息,是Connect-AzAccount中获取的Credentials信息不对导致的。但是当 Get-AzVirtualNetwork 不使用 -DefaultProfile参数时,命令确认成功执行。那么可以定位到问题是 -DefaultProfile $sub 引发。

在代码不变动的情况下,是什么原因导致DefaultProfile信息不对呢? 所以就深入查看了Azure Function中所依赖的模块('Az.Accounts')的版本情况,发现当使用 version '2.7.0'时,就会遇见这样的错误,在本地也能复现问题。当修改为version '2.6.2' 后,脚本能正常运行。

 

如何修改Azure Function中 Powershell脚本的依赖版本呢?

第一步:进入高级管理工具(Kudu:)

第二步:点击DebugConsole,并进入到wwwroot文件夹

第三步:找到requirements.psd1,首先点击edit图标修改requirements.psd1,安装Az.Accountsde 2.6.2依赖

# This file enables modules to be automatically managed by the Functions service.
# See https://aka.ms/functionsmanageddependency for additional information.
#
@{
    # For latest supported version, go to 'https://www.powershellgallery.com/packages/Az'. 
    # To use the Az module in your function app, please uncomment the line below.
    'Az' = '6.5.0'
    'Az.Accounts' = '2.6.2'
}
 

第四步:然后找到 profile.ps1文件,修改profile.ps1文件,在第一行添加: Import-Module Az.Accounts -RequiredVersion '2.6.2'

 

 

第五步:修改完成后,回到Function App界面点击重启按钮,重启会重新安装这些依赖(重装依赖包耗时在20分钟左右)。

 

附录一:Function Script

using namespace System.Net

# Input Parameter
param($Request, $TriggerMetadata)
$username = $env:ClientID
$password = $env:Password

# Login to Azure
$password = ConvertTo-SecureString -String $password -AsPlainText -Force
$pscredential = New-Object System.Management.Automation.PSCredential($username, $password)
# Write to the Azure Functions log stream.
Write-Host "PowerShell HTTP trigger function processed a request."
$VNetName = "XXXXXXXXXXXX"
$ResourceGroupName = "XXXXXXXXXXXX"
$cloudroomTenantId = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
$cloudroomId = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"

Connect-AzAccount -ServicePrincipal -Credential $pscredential -Tenant $cloudroomTenantId -Environment "China East"
$sub = Set-AzContext -SubscriptionId $cloudroomId -Tenant $cloudroomTenantId
 
# SELECT-AzSubscription -SubscriptionId $cloudroomId
$vnetResult = Get-AzVirtualNetwork -Name $VNetName -ResourceGroupName $ResourceGroupName -DefaultProfile $sub -ErrorAction "SilentlyContinue"
if ($vnetResult -and $vnetResult -ne "") {
    Write-Host "OK"
} else {
    Write-Host "Fail"
}
 

 

参考资料

Function Dependency management https://docs.microsoft.com/en-us/azure/azure-functions/functions-reference-powershell?tabs=portal#dependency-management

 

posted @ 2021-12-25 16:37  路边两盏灯  阅读(133)  评论(0编辑  收藏  举报