CODEWITHSUNDEEP
dockerasp.net-core
user11081980
user11081980

Reputation: 3289

Log file not created in a .NET Core application running in a Docker container

I run a ASP.NET Core application in a Docker container and I am using Serilog.Extensions.Logging.File to write logs to a file.

I am able to see the logs when running the app locally (not in a container), but I am not able to see the logs when I bash into the container.

I am new to containerization and I was wondering if I am missing any steps.

Upvotes: 1

Views: 3658

Answers (2)

Imamul Karim Tonmoy
Imamul Karim Tonmoy

Reputation: 584

For Linux Host :

Change folder permission to 777 where you want to store logs.

chmod 777 .

docker run -d -t -i -p 80:80 -v /usr/Logs:/app/Logs --name testContainer testImage

Upvotes: 0

Edward
Edward

Reputation: 30056

Follow steps below to check the difference.

  1. Configure Serilog like 

        public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
        WebHost.CreateDefaultBuilder(args)
            .ConfigureLogging((hostingContext, builder) =>
            {
                builder.AddFile("Logs/myapp-{Date}.txt");
            })
            .UseStartup<Startup>();

  2. Build the image 

    docker build -t dockersql .

  3. Run the image 

    docker run -it -p 9999:80 dockersql

  4. Find the running container and exec the container

enter image description here

As the suggestion from @Chris, it is recommended to mount the volume, you could try like 

    docker run -it -p 9999:80 -v D:\xx\TestDockerSQL\Test:/app/Logs dockersql

Upvotes: 3

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