使用Serilog输出到ES(使用笔记)

第一步：安装Serilog

  使用NuGet包安装以下组件：

Serilog.AspNetCore
Serilog.Settings.Configuration
Serilog.Sinks.Console
Serilog.Sinks.Elasticsearch

第二步：修改Program.cs文件

 public class Program
    {
        public static readonly string Namespace = typeof(Program).Namespace;
        public static readonly string AppName = Namespace.Substring(Namespace.LastIndexOf('.', Namespace.LastIndexOf('.') - 1) + 1);

        public static int Main(string[] args)
        {
            var configuration = GetConfiguration();
            Log.Logger = CreateSerilogLogger(configuration);
            try
            {
                Log.Information("Configuring web host ({ApplicationContext})...", AppName);
                var host = BuildWebHost(configuration, args);

                Log.Information("Starting web host ({ApplicationContext})...", AppName);
                host.Run();

                return 0;
            }
            catch (Exception ex)
            {
                Log.Fatal(ex, "Program terminated unexpectedly ({ApplicationContext})!", AppName);
                return 1;
            }
            finally
            {
                Log.CloseAndFlush();
            }
             
        }

        private static ILogger CreateSerilogLogger(IConfiguration configuration)
        {
//            var seqServerUrl = configuration["Serilog:SeqServerUrl"];
            return new LoggerConfiguration()
                .MinimumLevel.Verbose()
                .Enrich.WithProperty("ApplicationContext", AppName)
                .Enrich.FromLogContext()
                .WriteTo.Console(new ElasticsearchJsonFormatter())
//                .WriteTo.Console()
//                .WriteTo.Seq(string.IsNullOrWhiteSpace(seqServerUrl) ? "http://seq" : seqServerUrl) //写入sql
                .ReadFrom.Configuration(configuration)
                .CreateLogger();
        }

        private static IConfiguration GetConfiguration()
        {
            var builder = new ConfigurationBuilder()
                .SetBasePath(Directory.GetCurrentDirectory())
                .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
                .AddEnvironmentVariables();

            return builder.Build();
        }

        private static IWebHost BuildWebHost(IConfiguration configuration, string[] args) =>
            WebHost.CreateDefaultBuilder(args)
                .CaptureStartupErrors(false)
                .UseStartup<Startup>()
                .UseConfiguration(configuration)
                .UseSerilog()
                .Build();

    
    }

第三步：修改appsettings.json文件

{
  "Serilog": {
    "Using": [ "Serilog.Sinks.Console" ],
    "MinimumLevel": "Verbose",
    "WriteTo": [
      { "Name": "Console" }
    ],
    "Enrich": [ "FromLogContext", "WithMachineName", "WithThreadId" ],
    "Destructure": [

      {
        "Name": "ToMaximumDepth",
        "Args": { "maximumDestructuringDepth": 4 }
      },
      {
        "Name": "ToMaximumStringLength",
        "Args": { "maximumStringLength": 100 }
      },
      {
        "Name": "ToMaximumCollectionCount",
        "Args": { "maximumCollectionCount": 10 }
      }
    ],
    "Properties": {
      "Application": "deploy-demo"
    }
  },
  "AllowedHosts": "*"
}

第四步:打包成镜像运行

docker run -d -p 8003:80 --log-driver=fluentd --link elasticsearch --log-opt fluentd-address=192.168.0.186:24224 --network net_db --name deploydemo imagename