.NET 5 ASP.NET 核心应用程序未在 Azure 中启动

Question

我正在尝试在 Azure 中托管一个 .NET 5 ASP.NET Core Web Api。不幸的是，该应用程序没有启动，因为“诊断问题”也出现了。 看起来它陷入了一个启动循环，因为我在日志 stream 中一遍又一遍地收到相同的消息：

2020-11-13T11:25:43 Start 'Microsoft.AspNetCore.AzureAppServices.SiteExtension' site extension transform
2020-11-13T11:25:44 StartSection Executing InsertIfMissing (transform line 7, 23)
2020-11-13T11:25:44 on /configuration/system.webServer
2020-11-13T11:25:44 Applying to 'configuration' element (no source line info)
2020-11-13T11:25:44 EndSection Done executing InsertIfMissing
2020-11-13T11:25:44 StartSection Executing InsertIfMissing (transform line 8, 16)
2020-11-13T11:25:44 on /configuration/system.webServer/runtime
2020-11-13T11:25:44 Applying to 'system.webServer' element (no source line info)
2020-11-13T11:25:44 EndSection Done executing InsertIfMissing
2020-11-13T11:25:44 StartSection Executing InsertIfMissing (transform line 9, 31)
2020-11-13T11:25:44 on /configuration/system.webServer/runtime/environmentVariables
2020-11-13T11:25:44 Applying to 'runtime' element (no source line info)
2020-11-13T11:25:44 EndSection Done executing InsertIfMissing
2020-11-13T11:25:44 StartSection Executing InsertOrAppendAttribute (transform line 10, 406)
2020-11-13T11:25:44 on /configuration/system.webServer/runtime/environmentVariables/add[@name='DOTNET_ADDITIONAL_DEPS']
2020-11-13T11:25:44 Applying to 'environmentVariables' element (no source line info)
2020-11-13T11:25:44 EndSection Done executing InsertOrAppendAttribute
2020-11-13T11:25:44 StartSection Executing InsertOrAppendAttribute (transform line 11, 158)
2020-11-13T11:25:44 on /configuration/system.webServer/runtime/environmentVariables/add[@name='DOTNET_SHARED_STORE']
2020-11-13T11:25:44 Applying to 'environmentVariables' element (no source line info)
2020-11-13T11:25:44 EndSection Done executing InsertOrAppendAttribute
2020-11-13T11:25:44 StartSection Executing InsertOrAppendAttribute (transform line 12, 146)
2020-11-13T11:25:44 on /configuration/system.webServer/runtime/environmentVariables/add[@name='ASPNETCORE_HOSTINGSTARTUPASSEMBLIES']
2020-11-13T11:25:44 Applying to 'environmentVariables' element (no source line info)
2020-11-13T11:25:44 EndSection Done executing InsertOrAppendAttribute
2020-11-13T11:25:44 Successful 'C:\home\SiteExtensions\Microsoft.AspNetCore.AzureAppServices.SiteExtension\applicationHost.xdt' site extension transform
2020-11-13T11:25:44 sandboxproc.exe complete successfully. Elapsed = 1208.00 ms
2020-11-13T11:25:56 sandboxproc.exe D:\DWASFiles\Sites\fotoapp-api\Temp\applicationhost.config True True
2020-11-13T11:25:57 env XPROC_TYPENAME=Microsoft.Web.Hosting.Transformers.ApplicationHost.SiteExtensionHelper, Microsoft.Web.Hosting, Version=7.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
2020-11-13T11:25:57 env XPROC_METHODNAME=Transform
<these messages repeat endlessly>

我尝试了依赖于框架的部署（在应用程序服务中启用了 .NET 5 运行时）和独立部署。

我在任何地方都找不到更好的日志。 尚不支持 Application Insights。

对 api 的请求未通过日志 stream。大约 2 分钟后，服务器响应“HTTP 错误 503。服务不可用”。

Answer 1

我也有这个错误。

就我而言，问题与Azure App Service 64 位/32 位平台设置（ Web App \ Configuration \ General settings \ Platform settings ）有某种关系。

我最近将其更改为 64 位，然后开始出现此错误，当我恢复为 32 位时，问题就消失了。

我还没有确定根本原因，但就其价值而言，它就在那里。