ASP .NET Core 使用 Serilog记录日志并输出至ElasticSearch

Serilog添加ES配置

服务端Elasticsearch+Kibana的部署参考这篇博客，版本都是当前最新版本8.5.0

Serilog 相关文档参考这篇博客

新建一个ASP.NET Core Web项目，添加以下Neget包

Serilog.AspNetCore
Serilog.Extensions.Logging
Serilog.Sinks.Elasticsearch

Program.cs添加Serilog并添加ES相关配置

using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Hosting;
using Serilog;
using Serilog.Events;
using Serilog.Sinks.Elasticsearch;
using System;

namespace WebApplication1
{
    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<Startup>();
                }).UseSerilog((hostingContext, loggerConfiguration) =>
                {
                    string environment = "Development";
                    loggerConfiguration
                   .ReadFrom.Configuration(hostingContext.Configuration)
                   .Enrich.FromLogContext()
                   //过滤Net Core系统日志
                   .MinimumLevel.Override("Microsoft", LogEventLevel.Warning)
                   .WriteTo.Console()
                   .WriteTo.Elasticsearch(new ElasticsearchSinkOptions(new Uri("http://192.168.1.5:9200/"))
                   {
                       //OverwriteTemplate和TypeName一定要加，不然ES8无法写入日志
                       
                       IndexFormat = "muxue-{0:yyyy.MM.dd}",
                       //IndexFormat = $"{Assembly.GetExecutingAssembly().GetName().Name.ToLower().Replace(".", "-")}-{environment?.ToLower().Replace(".", "-")}-{DateTime.UtcNow:yyyy-MM}",
                       AutoRegisterTemplate = true,
                       OverwriteTemplate = true,
                       //TemplateName = "",
                       FailureCallback = e => Console.WriteLine("Unable to submit event " + e.MessageTemplate),
                       AutoRegisterTemplateVersion = AutoRegisterTemplateVersion.ESv7,
                       TypeName = null,
                       MinimumLogEventLevel = LogEventLevel.Verbose,
                       EmitEventFailure = EmitEventFailureHandling.RaiseCallback,
                       ModifyConnectionSettings =
                            conn =>
                            {
                                //conn.BasicAuthentication("elastic", "123456");
                                conn.ServerCertificateValidationCallback((source, certificate, chain, sslPolicyErrors) => false);
                                return conn;
                            }
                   });
                });
    }
}

WeatherForecastController.cs写入日志并访问API

using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
using System;

namespace WebApplication1.Controllers
{
    [ApiController]
    [Route("[controller]")]
    public class WeatherForecastController : ControllerBase
    {
        private readonly ILogger<WeatherForecastController> _logger;

        public WeatherForecastController(ILogger<WeatherForecastController> logger)
        {
            _logger = logger;
        }

        [HttpGet]
        public string Get()
        {
            _logger.LogInformation("我爱中国");
            _logger.LogInformation(Guid.NewGuid().ToString());
            return Guid.NewGuid().ToString();
        }
    }
}

Kibana查询日志

开发工具用API查询ES日志

控制台中输入索引查询日志(*代表所有)，查询到日志表示添加成功

GET /muxue-*/_search