Publishing .Net Core Application in Linux

Prerequisites

Before publishing your .NET Core 5 application on a Linux machine, ensure the following requirements:

1. Install .NET Core SDK: Verify that the correct version of the .NET Core 5 SDK is installed.

• Use the following command to check the installed version:
  dotnet –version
• To install the .NET Core 5 SDK, follow the official Microsoft documentation.

2. Verify Dependencies:

• Ensure essential dependencies like libicu, libcurl, and libssl are installed.

-> On Ubuntu-based distributions, install these dependencies with:
sudo apt update

• sudo apt install libicu libcurl4 libssl1.1

Publish the Application

1. Navigate to Project Directory:
   cd /path/to/your/project
2. Restore Dependencies: Ensure the dotnet restore command completes without errors before publishing:
   dotnet restore
   If you encounter issues during restore, check the nuget.config file and verify the package sources are reachable.
3. Publish the Application: Use the following command to publish your application:
   dotnet publish AppName.sln -c Release -o /path/to/output
   -c Release: Specifies the build configuration.
-o /path/to/output: Specifies the output directory.
4. Troubleshooting Stuck Restore Process:
   – Clear NuGet cache:
   – dotnet nuget locals all –clear
   – Check network connectivity and proxy settings.
   – Run the command with –verbosity detailed to get more information:
   dotnet restore –verbosity detailed

Run the Application

Once the application is published, navigate to the output directory and run the application:

cd /path/to/output
./AppName
If the application does not start, check the execution permissions:
chmod +x AppName

Also Read:

Web API in .NET 6

Logs and Diagnostics

Enable detailed logging with the following environment variable:
export
DOTNET_CLI_TELEMETRY_OPTOUT=1

• export DOTNET_SYSTEM_GLOBALIZATION_INVARIANT=1
• Check logs in the system journal (for system services):
  journalctl -xe

Conclusion

Following these steps, you can publish and run your .NET Core 5 application on a Linux machine. If issues persist, verify system dependencies, network connectivity, and environment configurations.