密码更改后 Azure ChainedTokenCredential 失败

Question

密码更改后， AzureChainedTokenCredential无法进行本地开发。我已经使用了ChainedTokenCredential几周来ManagedIdentityCredential在 Azure 中进行身份验证以及DefaultAzureCredential对我的函数应用程序进行本地测试。一切都按计划进行。下面是一个代码示例，该代码示例在 Azure 中一直有效，但在本地却无效。

def get_client():

    MSI_credential = ManagedIdentityCredential()
    default_credential = DefaultAzureCredential()
    credential_chain = ChainedTokenCredential(MSI_credential, default_credential)

    storageurl = os.environ["STORAGE_ACCOUNT"]

    client = BlobServiceClient(storageurl, credential=credential_chain)
    return client

上周我不得不更改密码，从那时起我收到以下错误。

[2021-04-19T15:18:06.931Z] SharedTokenCacheCredential.get_token failed: Azure Active Directory error '(invalid_grant) AADSTS50173: The provided grant has expired due to it being revoked, a fresh auth token is needed. The user might have changed or reset their password. The grant was issued on '2021-02-08T20:05:01.4240000Z' and the TokensValidFrom date (before which tokens are not valid) for this user is '2021-04-15T15:49:33.0000000Z'.
[2021-04-19T15:18:06.963Z] Trace ID: xxx
[2021-04-19T15:18:06.972Z] Correlation ID: xxx
[2021-04-19T15:18:06.974Z] Timestamp: 2021-04-19 15:17:46Z'
[2021-04-19T15:18:06.977Z] DefaultAzureCredential.get_token failed: SharedTokenCacheCredential raised unexpected error "Azure Active Directory error '(invalid_grant) AADSTS50173: The provided grant has expired due to it being revoked, a fresh auth token is needed. The user might have changed or reset their password. The grant was issued on '2021-02-08T20:05:01.4240000Z' and the TokensValidFrom date (before which tokens are not valid) for this user is '2021-04-15T15:49:33.0000000Z'.
[2021-04-19T15:18:07.014Z] Trace ID: xxx
[2021-04-19T15:18:07.040Z] Correlation ID: 
[2021-04-19T15:18:07.046Z] Timestamp: 2021-04-19 15:17:46Z'"
[2021-04-19T15:18:07.061Z] DefaultAzureCredential failed to retrieve a token from the included credentials.
Attempted credentials:
        EnvironmentCredential: EnvironmentCredential authentication unavailable. Environment variables are not fully configured.
        ManagedIdentityCredential: ManagedIdentityCredential authentication unavailable, no managed identity endpoint found.
        SharedTokenCacheCredential: Azure Active Directory error '(invalid_grant) AADSTS50173: The provided grant has expired due to it being revoked, a fresh auth token is needed. The user might have changed or reset their password. The grant was issued on '2021-02-08T20:05:01.4240000Z' and the TokensValidFrom date (before which tokens are not valid) for this user is '2021-04-15T15:49:33.0000000Z'.
[2021-04-19T15:18:07.094Z] Trace ID: xxx
[2021-04-19T15:18:07.097Z] Correlation xxx
[2021-04-19T15:18:07.108Z] Timestamp: 2021-04-19 15:17:46Z'
[2021-04-19T15:18:07.111Z] ChainedTokenCredential.get_token failed: DefaultAzureCredential raised unexpected error "DefaultAzureCredential failed to retrieve a token from the included credentials.
Attempted credentials:
        EnvironmentCredential: EnvironmentCredential authentication unavailable. Environment variables are not fully configured.
        ManagedIdentityCredential: ManagedIdentityCredential authentication unavailable, no managed identity endpoint found.
        SharedTokenCacheCredential: Azure Active Directory error '(invalid_grant) AADSTS50173: The provided grant has expired due to it being revoked, a fresh auth token is needed. The user might have changed or reset their password. The grant was issued on '2021-02-08T20:05:01.4240000Z' and the TokensValidFrom date (before which tokens are not valid) for this user is '2021-04-15T15:49:33.0000000Z'.
[2021-04-19T15:18:07.147Z] Trace ID: xxx
[2021-04-19T15:18:07.181Z] Correlation ID: xxx
[2021-04-19T15:18:07.195Z] Timestamp: 2021-04-19 15:17:46Z'"
[2021-04-19T15:18:07.201Z] ChainedTokenCredential failed to retrieve a token from the included credentials.
Attempted credentials:
        ManagedIdentityCredential: ManagedIdentityCredential authentication unavailable, no managed identity endpoint found.
        DefaultAzureCredential: DefaultAzureCredential failed to retrieve a token from the included credentials.
Attempted credentials:
        EnvironmentCredential: EnvironmentCredential authentication unavailable. Environment variables are not fully configured.
        ManagedIdentityCredential: ManagedIdentityCredential authentication unavailable, no managed identity endpoint found.
        SharedTokenCacheCredential: Azure Active Directory error '(invalid_grant) AADSTS50173: The provided grant has expired due to it being revoked, a fresh auth token is needed. The user might have changed or reset their password. The grant was issued on '2021-02-08T20:05:01.4240000Z' and the TokensValidFrom date (before which tokens are not valid) for this user is '2021-04-15T15:49:33.0000000Z'.
[2021-04-19T15:18:07.241Z] Trace ID: xxx
[2021-04-19T15:18:07.264Z] Correlation ID: xxx
[2021-04-19T15:18:07.303Z] Timestamp: 2021-04-19 15:17:46Z'

我尝试解决该问题的方法：

1. 登录和注销 VSCode Azure 扩展
2. 登录和退出az cli
3. az account clear
4. 清除浏览器缓存。
5. 重新启动 PC 和 VSCode。
6. 清除 VSCode 缓存
   • C:\Users\<user>\AppData\Roaming\Code\Cache
   • C:\Users\<user>\AppData\Roaming\Code\CacheData

我正在使用 Azure 扩展“附加到 Python 函数”来运行调试器。我不确定如何DefaultAzureCredential获得我的证书。我相信它存储在本地，因为在未登录 Azure 扩展的情况下运行调试器时，我遇到了相同的错误。我以为DefaultAzureCredential会使用我的 Azure 扩展登录来进行身份验证，但我不确定。

任何帮助，将不胜感激！

Answer 1

该问题已通过使用 @Charles Lowell 的解决方案得到解决。由于使用 fzf.exe（模糊查找工具），我无法找到该文件，并且默认情况下它不会在隐藏文件夹中查找。删除C:\Users\<user>\AppData\Local\.IdentityService\msal.cache有效。

我发现的另一种选择是使用VisualStudioCodeCredential()而不是DefaultAzureCredential(). 这使用 vscode 扩展进行身份验证。我更喜欢这种方法，但并非所有开发人员都使用 VSCode。我很高兴能开始DefaultAzureCredential工作。

def get_client():

    MSI_credential = ManagedIdentityCredential()
    vscode_credential = VisualStudioCodeCredential()
    credential_chain = ChainedTokenCredential(MSI_credential, vscode_credential)

更多信息可以在这里DefaultAzureCredential()找到。

谢谢大家！