My standard #nlog configs

nlog.appdata.config

<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" autoReload="true">

  <variable name="company_name" value="MyCompany" />
  <variable name="outdir" value="${specialfolder:folder=LocalApplicationData}/${var:company_name}/Logs/${var:program_name:default=Undefined}" />
  <variable name="layout" value="${longdate} | ${pad:padding=-15:${threadname:whenEmpty=${threadid}}} | ${pad:padding=-5:${level:uppercase=true}} | ${logger} | ${message}${onexception:inner= | ${exception:format=tostring}}"/>
  <targets>
    <target name="file_full" xsi:type="File"
        layout="${var:layout}"
        fileName="${var:outdir}/full.log"
        archiveFileName="${var:outdir}/full.{#}.log"
        archiveEvery="Day"
        archiveNumbering="Date"
        maxArchiveFiles="7"
        concurrentWrites="true"
        />
    <target name="file_info" xsi:type="File"
        layout="${var:layout}"
        fileName="${var:outdir}/info.log"
        archiveFileName="${var:outdir}/info.{#}.log"
        archiveEvery="Day"
        archiveNumbering="Date"
        maxArchiveFiles="7"
        concurrentWrites="true"
        />
    <target name="file_error" xsi:type="File"
       layout="${var:layout}"
       fileName="${var:outdir}/error.log"
       archiveFileName="${var:outdir}/error.{#}.log"
       archiveEvery="Day"
       archiveNumbering="Date"
       maxArchiveFiles="7"
       concurrentWrites="true"
        />
  </targets>
  <rules>
    <logger name="*" writeTo="file_full" />
    <logger name="*" minlevel="Info" writeTo="file_info" />
    <logger name="*" minlevel="Error" writeTo="file_error" />
  </rules>
</nlog>

nlog.console.config

<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" autoReload="true">
  <variable name="layout" value="${longdate} | ${pad:padding=-15:${threadname:whenEmpty=${threadid}}} | ${pad:padding=-5:${level:uppercase=true}} | ${logger} | ${message}${onexception:inner= | ${exception:format=tostring}}"/>
  <targets async="true">
    <target name="console" xsi:type="ColoredConsole"
            layout="${var:layout}">
    </target>
  </targets>
  <rules>
    <logger name="*" minlevel="Trace" writeTo="console" />
  </rules>
</nlog>

nlog.file.config

<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" autoReload="true">
  <variable name="outdir" value="${basedir}/logs" />
  <variable name="layout" value="${longdate} | ${pad:padding=-15:${threadname:whenEmpty=${threadid}}} | ${pad:padding=-5:${level:uppercase=true}} | ${logger} | ${message}${onexception:inner= | ${exception:format=tostring}}"/>
  <targets async="true">
    <target name="full" xsi:type="File"
            layout="${var:layout}"
            fileName="${var:outdir}/full.log"
            archiveFileName="${var:outdir}/full.{#}.log"
            archiveEvery="Day"
            archiveNumbering="Date"
            maxArchiveFiles="7"
            concurrentWrites="true"
            />
  </targets>
  <rules>
    <logger name="*" minlevel="Trace" writeTo="full" />
  </rules>
</nlog>

nlog.splunk.config

<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" autoReload="true">
  <variable name="outdir" value="C:\logs\OTHER" />
  <variable name="layout" value="${longdate} | ${pad:padding=-15:${threadname:whenEmpty=${threadid}}} | ${pad:padding=-5:${level:uppercase=true}} | ${logger} | ${message}${onexception:inner= | ${exception:format=tostring}}"/>
  <targets async="true">
    <target name="file" xsi:type="File"
            layout="${var:layout}"
            fileName="${var:outdir}/full.log"
            archiveFileName="${var:outdir}/full.{#}.log"
            archiveEvery="Day"
            archiveNumbering="Date"
            maxArchiveFiles="7"
            concurrentWrites="true"
            />
    <target type="Network" name="splunk" address="udp://172.16.19.254:10000" layout="${longdate}|${level:uppercase=true}|${logger}|${message}|${exception:format=tostring}"/>
  </targets>
  <rules>
    <logger name="*" minlevel="Trace" writeTo="file" />
    <logger name="*" minlevel="Trace" writeTo="splunk" />
  </rules>
</nlog>