在Azure Batch中使用托管身份通过批处理池中的Python向Key Vault进行身份验证

Question

我正在尝试使用系统分配的azure批处理托管标识来访问Azure密钥库。我在网上找到了一些代码，但我不知道这是否可能，或者证书路由是唯一的可能性。我已经为批处理帐户启用了托管身份，并将其添加到密钥库。但是，当我尝试从批处理池中的python sdk获取托管标识时，它失败了，并且我无法连接到密钥库。

我已经尝试过旧的azure-keyvault包(1.1.0版)和较新的4.0版。

这使用的是较旧的密钥保管库软件包，它会给出一个HTTPRequest错误：

from azure.keyvault import KeyVaultClient
from msrestazure.azure_active_directory import MSIAuthentication

credentials = MSIAuthentication(resource='https://vault.azure.net')

kvclient = KeyVaultClient(credentials)
res = kvclient.get_secret("https://kv.vault.azure.net/", "secret", "").value

对于较新的azure keyvault包，我使用的是：

import os
import cmd
from azure.keyvault.secrets import SecretClient
from azure.identity import ManagedIdentityCredential

keyVaultName = "kv"
KVUri = f"https://{keyVaultName}.vault.azure.net"

credential = DefaultAzureCredential()
client = SecretClient(vault_url=KVUri, credential=credential)

secretName = "secret"
retrieved_secret = client.get_secret(secretName)

但它找不到ManagedIdentityCredential。这是错误的一部分：

SharedTokenCacheCredential.get_token failed: Shared token cache unavailable
VisualStudioCodeCredential.get_token failed: Failed to get Azure user details from Visual Studio Code.
AzureCliCredential.get_token failed: Please run 'az login' to set up an account
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 identity has been assigned to this resource.
    SharedTokenCacheCredential: Shared token cache unavailable
    VisualStudioCodeCredential: Failed to get Azure user details from Visual Studio Code.
    AzureCliCredential: Please run 'az login' to set up an account
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>

Answer 1

2021-02-17更新答案：

批处理池上的托管身份现已在选定地区公开预览。请参阅this doc。

原始答案：

这是当前不支持的场景。请阅读文档底部有关此功能的documentation和解决此功能的特定常见问题解答。

另请参阅UserVoice request。