在启动时在Linux下运行ASP.NET Core应用程序

Question

I would like to run my ASP.NET Core solution under linux with the result it runs on startup.

From Microsoft docs , there are 2 ways: Apache and Nginx .

Both approaches involve proxy pass , eg

Apache:

<VirtualHost *:80>
    ProxyPreserveHost On
    ProxyPass / http://127.0.0.1:5000/
    ProxyPassReverse / http://127.0.0.1:5000/
    ....

Nginx:

server {
    listen        80;
    server_name   example.com *.example.com;
    location / {
        proxy_pass         http://localhost:5000;
        ...

Since Apache or Nginx only acts as proxy - do I get it right that I have to manually start the dotnet app ?

I can't see the bit in the documentation where something could trigger dotnet run command against my WebApi project.

Obviously, Apache or Nginx wouldn't handle triggering dotnet app - unless I've missed something.

Is there a way to automatically start the app on OS startup ?

Answer 1

This section in docs describes, how to create a service file to automatically start your Asp.Net Core app.

Create the service definition file:

 sudo nano /etc/systemd/system/kestrel-hellomvc.service 

The following is an example service file for the app:

 [Unit] Description=Example .NET Web API App running on Ubuntu [Service] WorkingDirectory=/var/aspnetcore/hellomvc ExecStart=/usr/bin/dotnet /var/aspnetcore/hellomvc/hellomvc.dll Restart=always # Restart service after 10 seconds if the dotnet service crashes: RestartSec=10 SyslogIdentifier=dotnet-example User=www-data Environment=ASPNETCORE_ENVIRONMENT=Development [Install] WantedBy=multi-user.target 

Save the file and enable the service.

 systemctl enable kestrel-hellomvc.service 

Start the service and verify that it's running.

 systemctl start kestrel-hellomvc.service systemctl status kestrel-hellomvc.service 

You need to set WorkingDirectory - path to folder with your app and ExecStart - with path to your app dll. By default this is enough.

From now, your app will automatically start on OS startup and will try to restart after crashes .