I've applied ASP.NET core 3.1 in my web application and I've used NLog for logging.
In local host I set the internalLogFile and fileName like this
internalLogFile="E:\Archives\Projects\Alpha\Alpha.Web.App\internal_logs\internallog.txt"
fileName="E:/Archives/Projects/Alpha/Alpha.Web.App/logs/${shortdate}_logfile.txt"
in nlog.config file. How can I set the paths for using in Azure?
<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
autoReload="true"
internalLogLevel="Trace"
internalLogFile="E:\Archives\Projects\Alpha\Alpha.Web.App\internal_logs\internallog.txt">
<targets>
<target name="logfile" xsi:type="File"
fileName="E:/Archives/Projects/Alpha/Alpha.Web.App/logs/${shortdate}_logfile.txt"
layout="${longdate} ${level:uppercase=true} ${message}"/>
</targets>
<rules>
<logger name="*" minlevel="Debug" writeTo="logfile" />
</rules>
</nlog>
nlog.config file is in this path:
https://{appname}.scm.azurewebsites.net/dev/wwwroot/nlog.config
I have used ${basedir} and changed values of internalLogFile and fileName to
internalLogFile="${basedir}/internal_logs/internallog.txt">
and
fileName="${basedir}/logs/${shortdate}_logfile.txt"
Now I access to these files in bin folder in my project.
Related
It is working fine on the local windows system. When I deploy it on a Linux server it is neither logging logs nor creating log files.
nlog.config
<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
autoReload="true"
throwConfigExceptions="true">
<!-- enable asp.net core layout renderers -->
<extensions>
<add assembly="NLog.Web.AspNetCore"/>
</extensions>
<!-- the targets to write to -->
<targets>
<target
name="errorLogFile"
xsi:type="File"
fileName="${currentdir}/logs/error/${date:format=yyyyMMdd}.txt"
layout="${longdate}|${event-properties:item=EventId_Id}|${uppercase:${level}}|${callsite}|${message} ${exception:format=tostring} ${newline} "
/>
<target
name="infoLogFile"
xsi:type="File"
fileName="${currentdir}/logs/info/${date:format=yyyyMMdd}.txt"
layout="${longdate}|${event-properties:item=EventId_Id}|${uppercase:${level}}|${callsite}|${message} ${exception:format=tostring} ${newline} "
/>
</targets>
<rules>
<logger name="Microsoft.*" minlevel="Info" maxlevel="Warn" writeTo="" final="true" />
<logger name="*" minlevel="ERROR" writeTo="errorLogFile" />
<logger name="*" minlevel="Info" maxlevel="Warn" writeTo="infoLogFile" />
</rules>
</nlog>
Program.cs > CreateHostBuilder
.ConfigureLogging((hostingContext, logging) =>
{
logging.AddConfiguration(hostingContext.Configuration.GetSection("Logging"));
logging.AddConsole();
logging.AddDebug();
logging.AddEventSourceLogger();
// Enable NLog as one of the Logging Provider
logging.AddNLog();
})
I've a .net core application on linux server.also in application i used nlog for logging. my application path on linux is /var/www-ninja/html/finance.api.gurukul.ninja. but with use of nlog i want to store logs in other linux directory. which is like /var/log/api/ninja/finance. so can I store logs in that directory. how can i do that ? for more details
nlog.production.config
<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
autoReload="true"
internalLogLevel="Info"
internalLogFile="c:\temp\internal-nlog.txt">
<extensions>
<add assembly="NLog.Web.AspNetCore"/>
<add assembly="NLog.Extensions.Logging"/>
<add assembly="NLog"/>
</extensions>
<variable name="ExceptionLayout" value="${longdate} [${processid}] ${uppercase:${level}} ${logger:shortName=true} ${environment-user} ${local-ip} ${aspnet-request-url} ${aspnet-request-method} ${message}${exception:format=tostring,Stacktrace}"/>
<variable name="CommonLayout" value="${longdate} [${processid}] ${uppercase:${level}} ${logger:shortName=true} ${environment-user} ${local-ip} ${message} "/>
<variable name ="logDir" value="/var/log/api/ninja/finance" />
<targets async="true">
<target xsi:type="File" name="file" layout="${CommonLayout}" fileName="${logDir}\log-${shortdate}.log" />
<target name="fileAsException"
xsi:type="FilteringWrapper"
condition="length('${exception}')>0">
<target xsi:type="File"
fileName="${logDir}\log-${shortdate}.log"
layout="${ExceptionLayout}" />
</target>
</targets>
<rules>
<logger name="*" writeTo="file,fileAsException"/>
<logger name="Microsoft.*" maxlevel="Info" final="true" />
</rules>
</nlog>
Make sure to use Unix-path, so stop using backslash \
Ex. instead of ${logDir}\log-${shortdate}.log then it should be ${logDir}/log-${shortdate}.log.
If still having issues then try to activate the NLog InternalLogger and check the output https://github.com/NLog/NLog/wiki/Internal-Logging
Can layout render(s) (processname to be exact) be used for FileName(s)?
Note,
the internalLogFile (and INTERNAL.log value)
and
fileName="${processname}.NLog.${shortdate}.PeanutButter.log"
values below.
<?xml version="1.0" encoding="utf-8" ?>
<!-- XSD manual extracted from package NLog.Schema: https://www.nuget.org/packages/NLog.Schema-->
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xsi:schemaLocation="NLog NLog.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
autoReload="true"
internalLogFile="${processname}.NLog.INTERNAL.log"
internalLogLevel="Trace" >
<!-- the targets to write to -->
<targets>
<!-- write logs to file -->
<target xsi:type="File" name="target1" fileName="${processname}.NLog.${shortdate}.PeanutButter.log"
layout="${date}|${level:uppercase=true}|${logger}|${environment-user:userName=true:domain=true}|****|${message} ${exception:format=toString,Data}|${all-event-properties}" />
<target xsi:type="Console" name="target2"
layout="${date}|${level:uppercase=true}|${logger}|${message} ${exception:format=toString,Data}|${all-event-properties}" />
</targets>
<!-- rules to map from logger name to target -->
<rules>
<logger name="*" minlevel="Trace" writeTo="target1,target2" />
</rules>
</nlog>
With the above, I'm getting a file created:
${processname}.NLog.INTERNAL.log
(literally, that is the filename)
and no files at all named:
*PeanutButter.log
where * is a wild card search.
Imported packages below.
<ItemGroup>
<PackageReference Include="NLog" Version="4.6.8" />
<PackageReference Include="NLog.Extensions.Logging" Version="1.6.1" />
</ItemGroup>
Can layout render(s) (processname to be exact) be used for FileName(s)?
Filetarget
Yes, it's fully supported for the file target.
See this simple example from the Filetarget docs:
Per-level log files
Single File target can be used to write to multiple files at once.
The following configuration will cause log entries for each log level
to be written to a separate file, so you will get:
Trace.log
Debug.log
Info.log
Warn.log
Error.log
Fatal.log
<target name="file" xsi:type="File"
layout="${longdate} ${logger} ${message}${exception:format=ToString}"
fileName="${basedir}/${level}.log" />
Internal logger
${processname}.NLog.INTERNAL.log
(literally, that is the filename)
It's not supported for the internal logger filename!
From the Internalloger docs
internalLogFile
Note: only a few layouts are supported, as the internal log needs to be as stable as possible.
NLog 4.6+: Supported renderers (without options): ${currentdir}, ${basedir}, ${tempdir}
NLog 4.6+: Environment Variables are also supported: e.g. %appdata%
If the internal logger would fail because of (complicated) layout renderers, where should it log that then? ;)
According to the documentation, NLog offers a FormControl target that will write log messages into the Text property of a control on a Windows Form. However, when I add a FormControl target to my configuration, I get an exception telling me that no target exists named "FormControl". I did download the NLog.Windows.Forms package and include a reference to the DLL in my project.
Here's the configuration:
<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
throwExceptions="true">
<!--
See https://github.com/nlog/nlog/wiki/Configuration-file
for information on customizing logging rules and outputs.
-->
<targets>
<!--
<target xsi:type="File" name="FileTarget" fileName="${basedir}/NLogger_4_1_2.log"
layout="${date} ${uppercase:${level}} ${message}" />
-->
<target name="AsyncTarget" xsi:type="AsyncWrapper" queueLimit="5000" overflowAction="Discard">
<target xsi:type="File" name="FileTarget1" fileName="${basedir}/NLogger_4_1_2.log"
layout="${date} ${uppercase:${level}} ${message}" />
</target>
<target xsi:type="File" name="ReportTarget" fileName="${basedir}/NLogger_4_1_2_report.log"
layout="${date} ${uppercase:${level}} ${message}" />
<target xsi:type="FormControl"
name="FormControlTarget"
layout="${message}"
append="true"
controlName="TextBox1"
formName="Form1" />
</targets>
<rules>
<logger name="FileLogger" minlevel="Trace"
writeTo="AsyncTarget" />
<logger name="ReportLogger" minlevel="Trace"
writeTo="ReportTarget" />
<logger name="FormLogger" minlevel="Trace"
writeTo="FormControlTarget" />
</rules>
</nlog>
I found this question in 2022 trying to get this working in VS2022. The answer is you need the NLog.Windows.Forms NuGet package installed.
And it is recommended to update NLog.config to include NLog.Windows.Forms-assembly in <extensions>:
<?xml version="1.0" encoding="utf-8" ?>
<nlog>
<extensions>
<add assembly="NLog.Windows.Forms"/>
</extensions>
...
</nlog>
I have added NLog to my project and in the development environment, it works fine.
I created a Setup file to deploy my application. The NLog.config file did not show up as a dependency in the Setup project. So, I added it as a file and it is present in the same directory as the exe file and App.config when deployed.
It does not do any logging. I don't know why. Here is the config file:
<?xml version="1.0" encoding="utf-8" ?>
<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<variable name="day" value="${date:format=dd}" />
<variable name="month" value="${date:format=MM}" />
<variable name="year" value="${date:format=yyyy}" />
<variable name="verbose" value="${longdate} | ${level} | ${message} | ${exception:format=tostring,message,method:maxInnerExceptionLevel=5:innerFormat=shortType,message,method}}" />
<targets>
<target name="logfile" xsi:type="File" fileName="${basedir}/Logs/${year}${month}${day}.log" layout="${verbose}" />
</targets>
<rules>
<logger name="*" minlevel="Error" writeTo="logfile" />
</rules>
</nlog>
Any help would be great. Cheers!
Does NLog.config have the property "Copy to Output Directory" set as "Copy always"? https://stackoverflow.com/a/8881521/438760
Put your NLog configuration within the yourapp.exe.config file. Like so:
<configuration>
<configSections>
<section name="nlog" type="NLog.Config.ConfigSectionHandler, NLog"/>
</configSections>
<nlog>
<variable name="day" value="${date:format=dd}" />
...
<targets>
<target name="logfile" xsi:type="File" .../>
</targets>
<rules>
<logger name="*" minlevel="Error" writeTo="logfile" />
</rules>
</nlog>
</configuration>
I'm guessing the double xml version statements (line 1 and 2) was a copy / paste issue....
Probably a dumb question, but you have the minLevel set to Error. Are you actually encountering errors that would be logged, or have you tried lowering this to info or debug?
For me, the reason my NLog stopped logging was different to the above suggestions.
During updating the packages, something must have automatically added an nlog section to the bottom of my Web.config. It may have been ApplicationInsights. Obviously this took preference and, this caused it to stop checking my Nlog.config file.
Once I removed the section from my web.config it started magically reading from my nlog.config file again. I took care to take the extentions, targets and rules from web.config and ensure they were placed neatly in my nlog.config file instead.