.NET Core Diagnostics Overview

With .NET Full running on Windows we have grown accustomed to a plethora of great diagnostics tools ranging from dump generation and manual analysis to more sophisticated collection engines such as DebugDiag. As .NET core is picking up (cross platform) steam what types of diagnostics capabilities are available to us when we need to do production diagnostics? It turns out that a lot of work has been done in this area and specifically .net core 3 promises to bring a wide range of diagnostics capabilities.