file logging with serilog in IIS

Question

I need to log some funcionality in my web API published in IIS so I have this in startup.cs

fileLog = @"c:\inetpub\wwwroot\planificadorwebapi\planificadorLog.json";

  Log.Logger = new LoggerConfiguration()
    .ReadFrom.Configuration(Configuration)
    .WriteTo.File(new JsonFormatter(), fileLog, shared: true)
    .CreateLogger();

I try to creat the file in the folder of the application but this file is never created. I make requests that log information but the file does not exist

When I start the application in Visual Studio the file is created and this works perfectly

Any idea please?

Regards

Check your IIS application pool Indentity user if has access permission on your designated folder — Voice Of The Rain
– Voice Of The Rain, Commented Dec 4, 2019 at 13:16
also search "Serilog SelfLog" to ease diagnosing this (also Sysinternals Filemon can be useful in this space) — Ruben Bartelink
– Ruben Bartelink, Commented Dec 4, 2019 at 17:22
In my Application the identity is asigned to "ApplicationPoolIdentity" I don't know to which user this corresponds. IIS_IUSRS maybe? — kintela
– kintela, Commented Dec 5, 2019 at 15:36

kintela · Accepted Answer · 2019-12-05 17:47:25Z

1

I did permission to write int the folder of the application to the account IIS_IUSRS and now the file is created well

Thanks

answered Dec 5, 2019 at 17:47

kintela

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