Serilog ignoring LogLevel from Microsoft.Extension.Logging

Question

I am using NET5 ASP.NET MVC application. Application is using Serilog.AspNetCore 3.4.0 for logging

appsettings.json

{
  "Logging": {
    "LogLevel": {
      "Default": "Error"
    }
  },
  "Serilog": {
    "Using": [ "Serilog.Sinks.Console"],
    "WriteTo": [
      {
        "Name": "Console"
      }
    ]
  }
}

Program.cs

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

I have also tried

 public static IHostBuilder CreateHostBuilder(string[] args) =>
        Host.CreateDefaultBuilder(args)
            .ConfigureWebHostDefaults(webBuilder =>
            {
                webBuilder
                   .UseStartup<Startup>()
                   .ConfigureLogging((hostingContext, logging) =>
                   {
                       logging.ClearProviders();
                       Log.Logger = new LoggerConfiguration()
                       .ReadFrom.Configuration(hostingContext.Configuration)                           
                       .CreateLogger();
                       logging.AddSerilog();
                   });                       
               
            });

Issue
My expectation is no Information log will be shown in Console since default LogLevel is Error. However, that is not working. In console I see every request is getting logged including Information

Throughout my application I am using Microsoft.Extensions.Logging.ILogger<MyClassName> to log information. All those statements are actually logging Info even if the LogLevel is Error.

Looks like Serilog ignoring LogLevel from Microsoft.Extensions.Logging.

Note that, I can set serilog's restrictedToMinimumLevel property to Error and that stops logging information. However I think serilog should obey the LogLevel from Microsoft.Extension.Logging

Answer 1

If you check the project's Github page it advises to actually remove the standard "Logging" section in appsettings.json :-(

I think this is bad since it actually breaks the compatibility with Microsoft.Extensions.Logging framework (you can't anymore change the actual log provider (Log4Net, NLog, Serilog) without changing the appsettings.json).

Answer 2

Use MinimumLevel property:

  "Logging": {
    "MinimumLevel": {
      "Default": "Error"
    }
  }

Also it supports overrides for categories:

  "Logging": {
    "MinimumLevel": {
      "Default": "Error",
      "Override": {
        "System": "Information",
        "Microsoft": "Information",
        "Microsoft.Hosting.Lifetime": "Information",
        "Microsoft.EntityFrameworkCore": "Debug"
      }
    }
  }