Sample NLog Config for ASP.NET

asp.nlog.config

<?xml version="1.0" encoding="utf-8" ?>

<!--
  REPLACE: "MyApp" with your app name
  Logging Help:
  Base log level is set by, 'internalLogLevel'. ASP.NET can override via, 'appsettings.json'
  Log Levels: Off|Trace|Debug|Info|Warn|Error|Fatal
-->
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      autoReload="true"
      internalLogLevel="Trace">

  <!-- enable asp.net core layout renderers -->
  <extensions>
    <add assembly="NLog.Web.AspNetCore" />
  </extensions>

  <!-- Output Targets -->
  <targets>
    <target name="logFile"
            xsi:type="File"
            fileName="Log/MyApp.log"
            archiveFileName="Log/MyApp.{##}.log"
            archiveAboveSize="10000000"
            archiveNumbering="Rolling"
            maxArchiveFiles="4"
            openFileCacheTimeout="30"
            layout="[${longdate}] [${event-properties:item=EventId_Id:whenEmpty=0}] [${uppercase:${level}}] [${logger}] [${message:exceptionSeparator=\r\n:withException=true}]" />

    <target name="logError"
            xsi:type="File"
            fileName="Log/MyApp-Error.log"
            archiveFileName="Log/MyApp-Error.{##}.log"
            archiveAboveSize="10000000"
            archiveNumbering="Rolling"
            maxArchiveFiles="4"
            layout="[${longdate}] [${event-properties:item=EventId_Id:whenEmpty=0}] [${uppercase:${level}}] [${logger}] [${message} ${exception:format=ToString}]" />

    <target name="logConsole"
            xsi:type="Console" />
  </targets>

  <!-- Target Rules -->
  <rules>
    <logger name="*" minlevel="Trace" writeTo="logFile" />
    <logger name="*" minlevel="Error" writeTo="logError" />

    <logger name="*" minlevel="Info" writeTo="logConsole" />

    <!-- Output hosting lifetime messages to console target for faster startup detection -->
    <logger name="Microsoft.Hosting.Lifetime" minlevel="Info" writeTo="logconsole" final="true" />

    <!-- Skip non-critical Microsoft logs and so log only own logs (BlackHole) -->
    <logger name="Microsoft.*" maxlevel="Debug" final="true" />
    <logger name="System.Net.Http.*" maxlevel="Info" final="true" />
  </rules>
</nlog>