How to use Serilog in .NET Core Console app

I’m not sure about builder.SetMinimumLevel (it doesn’t use the Serilog enum).

We set the logger level when creating the LoggerConfiguration object.

Log.Logger = new LoggerConfiguration()
    .MinimumLevel.Debug()
    .WriteTo.Console(restrictedToMinimumLevel: LogEventLevel.Debug) // restricted... is Optional
    (...)
    .CreateLogger();

BTW. It’s worth pointing out the following section from Configuration Basics

Logger vs. sink minimums – it is important to realize that the logging level can only be raised for sinks, not lowered. So, if the logger’s MinimumLevel is set to Information then a sink with Debug as its specified level will still only see Information level events. This is because the logger-level configuration controls which logging statements will result in the creation of events, while the sink-level configuration only filters these. To create a single logger with a more verbose level, use a separate LoggerConfiguration.

I’m not sure about builder.AddSerilog.

Here’s what works for me.

using Serilog;

(...)

Log.Logger = new LoggerConfiguration()
    .MinimumLevel.Debug()
    (...)
    .CreateLogger();

(...)

return new HostBuilder()
      .ConfigureHostConfiguration(...)
      .ConfigureServices(...)
      .UseSerilog();