Службе приложений Azure Active Directory не удается подключиться к Azure Keyvault с помощью учетных данных/токена пользователя

Я пытаюсь создать веб-приложение, в котором пользователь может просматривать секретную информацию Azure Keyvault, к которой явно имеет доступ их учетная запись Azure Ad. По сути, это панель мониторинга Azure Keyvault. Я использую проверку подлинности Azure Active Directory, когда пользователь входит в приложение. Это приложение размещается как служба приложений Azure.

Сама проверка подлинности Azure Active Directory работает нормально, но когда я пытаюсь подключиться к Azure Keyvault с помощью SecretClient и DefaultAzureCredential из Azure, она не работает.

Вот код, который я использую для сбора секретной информации:

var client = new SecretClient(new Uri(this.azureKeyVaultSettings.Value.KeyVaultBaseUrl),
                                      new DefaultAzureCredential(new DefaultAzureCredentialOptions()
                                                                 {
                                                                     ExcludeSharedTokenCacheCredential = false
                                                                 }));
                                                                     
var secrets = client.GetPropertiesOfSecretsAsync();

await foreach (SecretProperties secret in secrets)
{
    ...
}

Ниже приведен код, который у меня есть в Startup.cs. Я чувствую, что часть, которую мне не хватает, — это хранение токена, который я получаю после входа через oidc и каким-то образом использую его в SecretClient. Сначала я подумал, что это то, что EnableTokenAcquisitionToCallDownstreamApi и AddInMemoryTokenCaches делают ниже, и каким-то образом DefaultAzureCredential будет использовать это, но это явно не работает.

public void ConfigureServices(IServiceCollection services)
{
    ...
    
    services.AddAuthentication(OpenIdConnectDefaults.AuthenticationScheme)
            .AddMicrosoftIdentityWebApp(this.Configuration,
                                        "AzureAd")
            .EnableTokenAcquisitionToCallDownstreamApi(new string[]
                                                       {
                                                           "user.read"
                                                       })
            .AddInMemoryTokenCaches();
    
    services.AddMvc(options =>
    {
        var policy = new AuthorizationPolicyBuilder()
            .RequireAuthenticatedUser()
            .Build();
        options.Filters.Add(new AuthorizeFilter(policy));
    }).AddMicrosoftIdentityUI();
    
    ...

AppSettings.json:

{
  "AzureAd": {
    "Instance": "https://login.microsoftonline.com/",
    "Domain": "mydomain.com",
    "TenantId": "c9db0b8f-****-****-****-************",
    "ClientId": "318b64c3-****-****-****-************",
    "ClientSecret": "vh27Q*********************",
    "CallbackPath": "/signin-oidc"
  },
  "AzureKeyVaultSettings": {
    "KeyVaultBaseUrl": "https://myspecialvault.vault.azure.net/"
  },
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft": "Warning",
      "Microsoft.Hosting.Lifetime": "Information"
    }
  },
  "AllowedHosts": "*"
}

Ошибки, которые я получаю в своей службе приложений Azure:

2022-03-19 11:32:49.842 +00:00 [Critical] AzureKeyVaultDashboard.Web.Controllers.HomeController: Azure.Identity.CredentialUnavailableException: DefaultAzureCredential failed to retrieve a token from the included credentials. See the troubleshooting guide for more information. https://aka.ms/azsdk/net/identity/defaultazurecredential/troubleshoot
- EnvironmentCredential authentication unavailable. Environment variables are not fully configured. See the troubleshooting guide for more information. https://aka.ms/azsdk/net/identity/environmentcredential/troubleshoot- ManagedIdentityCredential authentication unavailable. Multiple attempts failed to obtain a token from the managed identity endpoint.- SharedTokenCacheCredential authentication unavailable. No accounts were found in the cache.- Visual Studio Token provider can't be accessed at D:\DWASFiles\Sites\myazkvdashboard\LocalAppData\.IdentityService\AzureServiceAuth\tokenprovider.json- Stored credentials not found. Need to authenticate user in VSCode Azure Account. See the troubleshooting guide for more information. https://aka.ms/azsdk/net/identity/vscodecredential/troubleshoot- Azure CLI not installed- PowerShell is not installed.---> System.AggregateException: Multiple exceptions were encountered while attempting to authenticate. (EnvironmentCredential authentication unavailable. Environment variables are not fully configured. See the troubleshooting guide for more information. https://aka.ms/azsdk/net/identity/environmentcredential/troubleshoot) (ManagedIdentityCredential authentication unavailable. Multiple attempts failed to obtain a token from the managed identity endpoint.) (SharedTokenCacheCredential authentication unavailable. No accounts were found in the cache.) (Visual Studio Token provider can't be accessed at D:\DWASFiles\Sites\myazkvdashboard\LocalAppData\.IdentityService\AzureServiceAuth\tokenprovider.json) (Stored credentials not found. Need to authenticate user in VSCode Azure Account. See the troubleshooting guide for more information. https://aka.ms/azsdk/net/identity/vscodecredential/troubleshoot) (Azure CLI not installed) (PowerShell is not installed.)---> Azure.Identity.CredentialUnavailableException: EnvironmentCredential authentication unavailable. Environment variables are not fully configured. See the troubleshooting guide for more information. https://aka.ms/azsdk/net/identity/environmentcredential/troubleshootat Azure.Identity.CredentialDiagnosticScope.FailWrapAndThrow(Exception ex, String additionalMessage)at Azure.Identity.EnvironmentCredential.GetTokenImplAsync(Boolean async, TokenRequestContext requestContext, CancellationToken cancellationToken)at Azure.Identity.EnvironmentCredential.GetTokenAsync(TokenRequestContext requestContext, CancellationToken cancellationToken)at Azure.Identity.DefaultAzureCredential.GetTokenFromSourcesAsync(TokenCredential[] sources, TokenRequestContext requestContext, Boolean async, CancellationToken cancellationToken)--- End of inner exception stack trace ------> (Inner Exception #1) Azure.Identity.CredentialUnavailableException: ManagedIdentityCredential authentication unavailable. Multiple attempts failed to obtain a token from the managed identity endpoint.---> System.AggregateException: Retry failed after 4 tries. Retry settings can be adjusted in ClientOptions.Retry. (An attempt was made to access a socket in a way forbidden by its access permissions. (100.100.100.100:80)) (An attempt was made to access a socket in a way forbidden by its access permissions. (100.100.100.100:80)) (An attempt was made to access a socket in a way forbidden by its access permissions. (100.100.100.100:80)) (An attempt was made to access a socket in a way forbidden by its access permissions. (100.100.100.100:80))

Все эти функции работают нормально при локальном тестировании.

я использую

• .нет 6
• Azure.Identity — 1,5
• Azure.Security.KeyVault.Secrets — 4.2