Asp.net core ApplicationInsights dotnet核心自定义初始值设定项

我不知道如何为aspnetcore项目配置AI。我已经做了以下工作：

services.AddSingleton<ITelemetryInitializer, AppInsightsInitializer>();
services.AddApplicationInsightsTelemetry(Configuration);

我没有applicationNights.config文件（我知道不需要它们）

问题：每个日志有4个条目（相同id）。数据是正确的。我在日志中还发现以下错误：

AI: Error collecting 9 of the configured performance counters. Please check the configuration.  Counter \Process(??APP_WIN32_PROC??)\% Processor Time: Failed to perform the first read for performance counter. Please make sure it exists. 
Category: Process, counter: % Processor Time, instance Counter \Memory\Available Bytes: Failed to register performance counter. 
Category: Memory, counter: Available Bytes, instance: . 
Counter \ASP.NET Applications(??APP_W3SVC_PROC??)\Requests/Sec: Failed to perform the first read for performance counter. Please make sure it exists. 
Category: ASP.NET Applications, counter: Requests/Sec, instance MyCoolv3.Api.exe Counter \.NET CLR Exceptions(??APP_CLR_PROC??)\# of Exceps Thrown / sec: Failed to perform the first read for performance counter. Please make sure it exists. 
Category: .NET CLR Exceptions, counter: # of Exceps Thrown / sec, instance Counter \ASP.NET Applications(??APP_W3SVC_PROC??)\Request Execution Time: Failed to perform the first read for performance counter. Please make sure it exists. 
Category: ASP.NET Applications, counter: Request Execution Time, instance MyCoolv3.Api.exe Counter \Process(??APP_WIN32_PROC??)\Private Bytes: Failed to perform the first read for performance counter. Please make sure it exists. Category: Process, counter: Private Bytes, instance Counter \Process(??APP_WIN32_PROC??)\IO Data Bytes/sec: Failed to perform the first read for performance counter. Please make sure it exists. 
Category: Process, counter: IO Data Bytes/sec, instance Counter \ASP.NET Applications(??APP_W3SVC_PROC??)\Requests In Application Queue: Failed to perform the first read for performance counter. Please make sure it exists. Category: ASP.NET Applications, counter: Requests In Application Queue, instance MyCoolv3.Api.exe 
Counter \Processor(_Total)\% Processor Time: Failed to register performance counter. Category: Processor, counter: % Processor Time, instance: _Total.

我正在使用：

<PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.1.0-beta1" />
<PackageReference Include="Microsoft.AspNetCore" Version="1.1.1" />
<PackageReference Include="Microsoft.AspNetCore.Mvc" Version="1.1.2" />

不再需要了（假设，您甚至应该在这条线上收到弃用警告？）

如果您在VS2017中创建一个asp.net核心新项目，AI将已经存在于包引用中（尽管是2.0版本，而不是2.1 beta版本），并且所有连接都将在

program.cs

和其他一些文件中完成

如果您正在移植一个现有的应用程序，那么您将使用

.UseApplicationInsights()

在你的

程序中.cs

启动你的应用程序。有关更多详细信息，请参阅

我们还正在更新VS2017中的“配置应用程序洞察”工具，以便在将来的更新中正确“迁移”类似的应用程序

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我不知道为什么你会得到任何事件的多个实例，除非你显式地记录它们，或者如果你可能有多个启动调用（这也不会影响任何事情）。您在哪里看到多个实例？在VS的appinsights工具中？在门户中？

相关问题：如果我想在Program.cs中的WebBuilder上使用UseApplicationInsights（）时以编程方式添加遥测密钥，但这是在启动配置之前执行的（这是我从keyvault加载遥测密钥的地方）。我还考虑在WebBuilder上调用UseConfiguration（xx）并从xx检索配置，然后将其用作UseApplicationInsights的参数。。。思想？

services.AddApplicationInsightsTelemetry(Configuration);

.UseApplicationInsights()