Program.cs

using System;
using System.Diagnostics;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Hosting;
using Serilog;
using Serilog.Events;

namespace WebApplication1
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //Activity.DefaultIdFormat = ActivityIdFormat.W3C;

            Log.Logger = new LoggerConfiguration()
                .Enrich.FromLogContext()
                //.Enrich.WithCorrelationIdHeader("X-Correlation-ID")
                .Enrich.WithMachineName()
                .Enrich.WithProcessId()
                .Enrich.WithProcessName()
                .Enrich.WithThreadId()
                .MinimumLevel.Debug()
                .MinimumLevel.Override("Microsoft", LogEventLevel.Information)
                .MinimumLevel.Override("Microsoft.AspNetCore", LogEventLevel.Warning)
                .WriteTo.Seq("http://localhost:5341")
                .WriteTo.Console()
                .CreateLogger();

            try
            {
                CreateHostBuilder(args).Build().Run();
            }
            catch (Exception ex)
            {
                Log.Fatal(ex, "Host terminated unexpectedly");
            }
            finally
            {
                Log.CloseAndFlush();
            }
        }

        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
                .ConfigureWebHostDefaults(webBuilder =>
                {
                    webBuilder
                        .UseSerilog()
                        .UseStartup<Startup>();
                });
    }
}