azure - Azure 应用程序见解中存在大量 n/a 关键跟踪消息

Question

我在 Azure 中托管了 dotnet core Web 应用程序，并使用应用程序洞察进行日志记录。我发现我有异常数量的 n/a 关键跟踪消息，例如 1 分钟内大约 11k。有人在应用洞察中遇到过这个问题吗？

图书馆:

• Microsoft.ApplicationInsights.AspNetCore 版本=2.15.0
• Microsoft.ApplicationInsights.DependencyCollector 版本=2.15.0
• Microsoft.ApplicationInsights.DiagnosticSourceListener 版本=2.15.0
• Microsoft.ApplicationInsights.EventSourceListener 版本=2.15.0
• Microsoft.ApplicationInsights.TraceListener 版本=2.15.0
• Microsoft.ApplicationInsights.WindowsServer 版本=2.15.0
• Microsoft.AspNetCore.Hosting 版本=2.2.7

dotnet 运行时:netcoreapp3.1

我已在下面配置了应用程序见解。

public static IWebHostBuilder UseLoggingWithAppInsights(this IWebHostBuilder builder)
{
    builder.ConfigureServices((context, services) =>
    {
        services.AddApplicationInsightsTelemetry(applicationInsightsInstrumentKey);
    });

    var provider = services.BuildServiceProvider();
    IWebHostEnvironment host = provider.GetService<IWebHostEnvironment>();
    IHttpContextAccessor context = provider.GetService<IHttpContextAccessor>();

    TelemetryConfiguration.Active.EnableTelemetry(applicationInsightsInstrumentKey, appName, telemetryDetails, telemetrySettings, context, host);

    TelemetryConfiguration config = provider.GetService<TelemetryConfiguration>() ?? TelemetryConfiguration.CreateDefault();

    TelemetryConfiguration.Active.FireTraceToSeeIfActive();
    config.FireTraceToSeeIfActive();

    builder.ConfigureServices((context, services) =>
    {
        var instrumentationKey = context.Configuration.GetValue<string>("ApplicationInsights:InstrumentationKey");
        
        if (string.IsNullOrWhiteSpace(TelemetryConfiguration.Active.InstrumentationKey)
            || TelemetryConfiguration.Active.InstrumentationKey != instrumentationKey)
        {
            TelemetryConfiguration.Active.InstrumentationKey = instrumentationKey;
        }

        var provider = services.BuildServiceProvider();
        Util.StaticApplicationLogging.LoggerFactory = provider.GetRequiredService<ILoggerFactory>();
    });

    builder.ConfigureLogging((builderContext, loggingBuilder) =>
    {
        loggingBuilder.AddConfiguration(builderContext.Configuration.GetSection("Logging"));
    });

    return builder;
}

Answer 1

Lots of n/a critical trace message in Azure application insights

此问题的原因可能是 appsettings.json 文件中的配置不正确。

并且您使用的代码不推荐在.NET Core应用程序中使用。

 TelemetryConfiguration.Active.EnableTelemetry(applicationInsightsInstrumentKey, appName, telemetryDetails, telemetrySettings, context, host);

• 降低消息的严重性级别，这可以通过仅设置所需的日志级别来完成。

我的初始 appsettings.json 文件。

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft": "Warning",
      "Microsoft.Hosting.Lifetime": "Information"
    }
  },
  "AllowedHosts": "*",
  "ApplicationInsights": {
    "ConnectionString": "AppInsightsConnString"
  }
}

• 通过上述appsettings，仅显示错误、严重和警告消息。
• 要记录信息、调试和异常消息，必须在appsettings.json文件中进行一些更改.

appsettings.json 文件:

{
  "Logging": {
    "ApplicationInsights": {
      "LogLevel": {
        "Default": "Debug",
        "Microsoft": "Error"
      }
    },
    "LogLevel": {
      "Default": "Information",
      "Microsoft": "Warning",
      "Microsoft.Hosting.Lifetime": "Information"
    }
  },
  "AllowedHosts": "*",
  "ApplicationInsights": { 
    "ConnectionString": "InstrumentationKey=a******;IngestionEndpoint=https://*******8.in.applicationinsights.azure.com/;LiveEndpoint=https://*******.livediagnostics.monitor.azure.com/"
  }
}

• 确保所有软件包都是最新且已更新。

.csproj 文件:

<Project Sdk="Microsoft.NET.Sdk.Web">
  <PropertyGroup>
    <TargetFramework>netcoreapp3.1</TargetFramework>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.21.0" />
    <PackageReference Include="Microsoft.ApplicationInsights.DependencyCollector" Version="2.21.0" />
    <PackageReference Include="Microsoft.ApplicationInsights.DiagnosticSourceListener" Version="2.15.0" />
    <PackageReference Include="Microsoft.ApplicationInsights.EventSourceListener" Version="2.15.0" />
    <PackageReference Include="Microsoft.ApplicationInsights.TraceListener" Version="2.15.0" />
    <PackageReference Include="Microsoft.ApplicationInsights.WindowsServer" Version="2.21.0" />
    <PackageReference Include="Microsoft.AspNetCore.Hosting" Version="2.2.7" />
  </ItemGroup>
</Project>

Startup.cs 文件:

using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;

namespace WebApplication1
{
    public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }
        public void ConfigureServices(IServiceCollection services)
        {
           services.AddApplicationInsightsTelemetry();
            services.AddControllersWithViews();
        }
       
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseExceptionHandler("/Home/Error");          
                app.UseHsts();
            }
            app.UseHttpsRedirection();
            app.UseStaticFiles();
            app.UseRouting();
            app.UseAuthorization();
            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllerRoute(
                    name: "default",
                    pattern: "{controller=Home}/{action=Index}/{id?}");
            });
        }
    }
}

应用程序洞察跟踪: