Before MassTransit 6, separate NuGet packages existed that allowed you to integrate the logging framework of your choice with MassTransit. In our case we were using Serilog and a MassTransit.SerilogIntegration NuGet package to bring the 2 together.
In MassTransit 6 the previous abstraction has been removed and is replaced by Microsoft.Extensions.Logging.Abstractions
.
To enable integration you need to call
MassTransit.Context.LogContext.ConfigureCurrentLogContext(loggerFactory);
before configuring the bus or directly pass on the ILogger instance
MassTransit.Context.LogContext.ConfigureCurrentLogContext(logger);
Integration with Serilog can now be done through the serilog-extensions-logging NuGet package.
More information here; https://www.nuget.org/packages/MassTransit.SerilogIntegration/