azureasp.net-coreazure-web-app-servicenodeservices

ASP.NET Core NodeServices on Azure Linux WebApp


I am used to publish Azure WebApps on Windows but now I am trying to deploy an ASP.NET Core 3 (with NodeServices) to a Linux WebApp and I am receiving the following error message:

InvalidOperationException: Failed to start Node process. To resolve this:.

[1] Ensure that Node.js is installed and can be found in one of the PATH directories. Current PATH enviroment variable is: /opt/dotnetcore-tools:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/home/site/wwwroot Make sure the Node executable is in one of those directories, or update your PATH.

On Windows WebApps I have a lot of other apps and all are fine.

On Kudu I typed node -v and the output was v12.13.0.

Can anybody please help me?

Thank you very much.


Solution

  • After a long research and the assistance of Microsoft's Engineer https://github.com/caroe2014 this is the three steps final answer:

    1) Startup.cs

        services.AddNodeServices(options =>
            {
              if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
              {
                options.ProjectPath = Path.GetFullPath("/home/site/wwwroot");
              }
            }
          );
    

    2) And what I found is Node is not present in the container so it is necessary to have a script to install and start it before starting the app itself. So I have this start1.cs file:

    #!/bin/bash
    
    apt-get install curl
    curl -sL https://deb.nodesource.com/setup_12.x | bash
    apt-get install -y nodejs
    
    set -e
    export PORT=8080
    export ASPNETCORE_URLS=http://*:$PORT
    dotnet "Web.Identity.dll"
    

    Where Web.Identity.dll is the dll of my app.

    3) Set startup command to /home/site/wwwroot/start1.sh (On Azure Portal - App service Configuration - or Azure DevOps).

    That's all.