要使用 OpenTelemetry 将跟踪和指标发送到 Grafana,您需要进行以下步骤:
Program.cs
文件中设置 OpenTelemetry:using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Hosting;
using OpenTelemetry;
using OpenTelemetry.Resources;
using OpenTelemetry.Trace;
public class Program
{
public static void Main(string[] args)
{
CreateHostBuilder(args).Build().Run();
}
public static IHostBuilder CreateHostBuilder(string[] args) =>
Host.CreateDefaultBuilder(args)
.ConfigureWebHostDefaults(webBuilder =>
{
webBuilder.UseStartup();
})
.ConfigureServices((hostContext, services) =>
{
services.AddOpenTelemetryTracing(builder =>
{
builder
.SetResourceBuilder(ResourceBuilder.CreateDefault().AddService("MyServiceName"))
.AddAspNetCoreInstrumentation()
.AddHttpClientInstrumentation()
.AddProcessorPipeline(pipeline => pipeline.AddExporter(new GrafanaExporterOptions { Url = "http://localhost:3000", Username = "admin", Password = "password" }));
});
});
}
在此示例中,我们使用 AddOpenTelemetryTracing
方法来配置 OpenTelemetry 跟踪。我们添加了 AspNetCoreInstrumentation 和 HttpClientInstrumentation,以便自动跟踪 ASP.NET Core 请求和 HttpClient 请求。然后,我们将 GrafanaExporterOptions
添加到处理器管道中,将跟踪和指标发送到 Grafana。
请确保将 Url
、Username
和 Password
替换为您的 Grafana 实例的正确值。
Startup.cs
文件中启用 OpenTelemetry:using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
namespace YourNamespace
{
public class Startup
{
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
public IConfiguration Configuration { get; }
public void ConfigureServices(IServiceCollection services)
{
services.AddControllers();
}
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
app.UseRouting();
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllers();
});
}
}
}
在此示例中,我们只添加了基本的 ASP.NET Core 配置。如果您的项目中有其他中间件,请根据需要进行调整。
请注意,此示例假设您已经在 Grafana 中设置了正确的数据源和仪表板。您需要根据自己的需求和环境进行相应的调整和配置。