Azure函数应用程序启动错误:尝试加密提供的数据时出错

Question

我已经写了一个Azure定时器函数应用程序，一切都运行得很好:编译和运行，但当我正在努力支持ApplicationInsights时，当我的应用程序启动时，我得到了以下错误。

A host error has occurred during startup operation '3cec5467-dfe8-4965-84a5-65f44b217bce'.
System.Security.Cryptography.CryptographicException: An error occurred while trying to encrypt the provided data. Refer to the inner exception for more information.
 ---> System.InvalidOperationException: The key ring does not contain a valid default protection key. The data protection system cannot create a new key because auto-generation of keys is disabled.
   at Microsoft.AspNetCore.DataProtection.KeyManagement.KeyRingProvider.CreateCacheableKeyRingCore(DateTimeOffset now, IKey keyJustAdded)
   at Microsoft.AspNetCore.DataProtection.KeyManagement.KeyRingProvider.Microsoft.AspNetCore.DataProtection.KeyManagement.Internal.ICacheableKeyRingProvider.GetCacheableKeyRing(DateTimeOffset now)
   at Microsoft.AspNetCore.DataProtection.KeyManagement.KeyRingProvider.GetCurrentKeyRingCore(DateTime utcNow, Boolean forceRefresh)
   at Microsoft.AspNetCore.DataProtection.KeyManagement.KeyRingProvider.GetCurrentKeyRing()
   at Microsoft.AspNetCore.DataProtection.KeyManagement.KeyRingBasedDataProtector.Protect(Byte[] plaintext)

我不知道从哪里开始。我重新创建了一个计时器函数应用程序，并将我的代码重新添加到其中，但仍然得到相同的错误。欢迎提出任何建议。

Answer 1

我找到了错误的原因。这非常奇怪，没有任何意义。

这是我的local.settings.json文件。如果我将拼写"CONTAINER_NAME“或"CONTAINERNAME”作为键，则会导致错误。如果我只是将它重命名为其他名称，我不会出错。这没有任何意义。我通过重构我的function应用程序发现了这一点。"CONTAINER_NAME“和"LOG_FILENAME”是我添加到设置文件的最后两个项目，因为我正在写入Azure Blob存储。

{
  "IsEncrypted": false,
  "Values": {
    "SQLCONNSTR_DefaultConnection": "",
    "AzureWebJobsStorage": "",
    "FUNCTIONS_WORKER_RUNTIME": "dotnet",
    "FUNCTIONS_EXTENSION_VERSION": "~3",
    "WEBSITE_RUN_FROM_PACKAGE": 1,
    "CALICO_SFTP_URL": "",
    "PORT": 22,
    "USER_NAME": "",
    "PASSWORD": "",
    "SOURCE_DIRECTORY": "",
    "ERROR_DIRECTORY": "",
    "ARCHIVE_DIRECTORY": "",
    "SOURCE_FILE": "",
    "KEY_VAULT_URL": "",
    "PRIVATE_KEY": "",
    "PARAPHRASE": "",
    "CONTAINER_NAME": "",
    "LOG_FILENAME": ""
  }
}

感谢每一个愿意提供帮助的人和你的建议。希望有人能理解这种行为。