Create logging.md (#205)

* Create logging.md

* Update logging.md

---------

Co-authored-by: Todor Arabadzhiev <[email protected]>

Author: dnikolov-prg

dotnet-docs/logging.md

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+---
+title: Logging in the Report Server for .NET 
+page_title: Enabling logging in the Report Server for .NET
+description: "Learn how to enable SeriLog logging in the Telerik Report Server for .NET application and service."
+slug: logging-rs-net
+tags: SeriLog,Logging,Troubleshooting,Error,RS.NET
+published: True
+position: 302
+---
+
+# Overview
+
+The Report Server for .NET uses [Serilog](https://serilog.net/) to allow  writing diagnostic logging information from the server onto a file for easier troubleshooting.
+
+## Setup
+
+The configuration options for Serilog that would usually be set up through the C# API - [Serilog Configuration Basics](https://github.com/serilog/serilog/wiki/Configuration-Basics), can instead be
+defined in the `appsettings.json` configuration files of the Report Server for .NET.
+
+### Report Server Manager
+
+The `appsettings.json` file of the Report Server Manager for .NET resides in its installation directory, for example, `C:\Program Files (x86)\Progress\Telerik Report Server\Telerik.ReportServer.Web.NET\`.
+The following configuration settings can be added to that file, at the top level:
+
+````JSON
+  "Serilog": {
+   "MinimumLevel": "Verbose",
+    "WriteTo": [
+      {
+        "Name": "Console"
+      },
+	  {
+        "Name": "File",
+        "Args": { "path": "Logs/logServerManagerAll.txt" }
+      }
+    ]
+  }
+````
+
+### Service Agent
+
+The Report Server for .NET ServiceAgent's `appsettings.json` file can be found in its installation directory, by default - `C:\Program Files (x86)\Progress\Telerik Report Server\Services\.NET\`.
+The following configuration settings can be added to that file, at the top level:
+
+````JSON
+  "Serilog": {
+   "MinimumLevel": "Verbose",
+    "WriteTo": [
+      {
+        "Name": "Console"
+      },
+	  {
+        "Name": "File",
+        "Args": { "path": "Logs/logServiceAgentAll.txt" }
+      }
+    ]
+  }
+````
+
+> For more configuration settings, refer to [Serilog Configuration Basics](https://github.com/serilog/serilog/wiki/Configuration-Basics).
+
+## See Also
+
+* [Report Server for .NET Introduction]({%slug coming-soon%})
+* [Report Server for .NET: Installation on Windows]({%slug dotnet-installation-on-windows%})
+* [Report Server for .NET: Installation on Docker Container]({%slug dotnet-installation-on-docker-container%})