Aspnet Core 5 single file deploy with Serilog - no log output

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Description There is no log output to console or log file

Reproduction program.cs

 public static void Main(string[] args)
        {
            //var _config = new ConfigurationBuilder().AddJsonFile("appsettings.json");
            
            //Log.Logger = new LoggerConfiguration()
            //.MinimumLevel.Information()
            //.MinimumLevel.Override("Microsoft", LogEventLevel.Information)
            //.Enrich.FromLogContext()
            //.WriteTo.Console()
            //.ReadFrom.Configuration(_config.Build())
            //.CreateLogger();

            CreateHostBuilder(args).Build().Run();
        }

        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
                .UseSerilog((hostingContext, services, loggerConfiguration) => loggerConfiguration
                    .ReadFrom.Configuration(hostingContext.Configuration)
                    .Enrich.FromLogContext())
                .ConfigureWebHostDefaults(webBuilder =>
                {
                    webBuilder.UseStartup<Startup>();
                });
    }

appsettings.json

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft": "Warning",
      "Microsoft.Hosting.Lifetime": "Information"
    }
  },
  "AllowedHosts": "*",
  "Serilog": {
    "MinimumLevel": {
      "Default": "Information",
      "Override": {
        "Microsoft": "Information"
      }
    },
    "WriteTo": [
      {
        "Name": "Console",
        "Args": {
          "outputTemplate": "[{Timestamp:HH:mm:ss.fff} {Application} {Level:u3}][{RequestId}] {SourceContext}: {Message:lj}{NewLine}{Exception}"
        }
      },
      {
        "Name": "File",
        "Args": {
          "outputTemplate": "[{Timestamp:HH:mm:ss.fff} {Application} {Level:u3}][{RequestId}] {SourceContext}: {Message:lj}{NewLine}{Exception}",
          "path": "/var/log/aspnetcore5/applog.log",
          "fileSizeLimitBytes": 100485760,
          "rollOnFileSizeLimit": true,
          "rollingInterval": "Day",
          "retainedFileCountLimit": 3
        }
      }

    ]
  }
}

Expected behavior logs to console and file. The same app works in dotnet core 3.1

Relevant package, tooling and runtime versions What Serilog version are you using, on what platform? Serilog.AspNetCore 3.4.0 Docker image Alpine 3.12 x64 from Microsoft https://github.com/dotnet/dotnet-docker/tree/master/src/aspnet/5.0/alpine3.12/amd64

Additional context The same app works when it is not bundled/compiled into a single file or standalone deployment.

[skomis-mm]

Hi, @alberk8, @pedroansilva See issues: #245, #239. I’ve updated the documentation here:

Currently, auto-discovery of configuration assemblies is not supported in bundled mode. Use Using section for workaround.

[mc0re]

I had a similar problem when switching the project to .NET 5. What solved it is moving the configuration from appsettings.json to code - and not reading the JSON file.