ASP.NET Core Linux code example

Example 1: asp.net core linux systemd

dotnet add package Microsoft.Extensions.Hosting.Systemd --version 3.1.1

Example 2: asp.net core linux systemd

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;

namespace AspNetSite
{
    public class Program
    {
        public static void Main(string[] args)
        {
            CreateHostBuilder(args).Build().Run();
        }

        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
                .UseSystemd()
                .ConfigureWebHostDefaults(webBuilder =>
                {
                    webBuilder.UseStartup<Startup>();
                });
    }
}

Example 3: asp.net core linux systemd

[Unit]
Description=ASP.NET Core web template

[Service]
# will set the Current Working Directory (CWD)
WorkingDirectory=/srv/AspNetSite
# systemd will run this executable to start the service
ExecStart=/srv/AspNetSite/AspNetSite
# to query logs using journalctl, set a logical name here  
SyslogIdentifier=AspNetSite

# Use your username to keep things simple, for production scenario's I recommend a dedicated user/group.
# If you pick a different user, make sure dotnet and all permissions are set correctly to run the app.
# To update permissions, use 'chown yourusername -R /srv/AspNetSite' to take ownership of the folder and files,
#       Use 'chmod +x /srv/AspNetSite/AspNetSite' to allow execution of the executable file.
User=yourusername

# ensure the service restarts after crashing
Restart=always
# amount of time to wait before restarting the service              
RestartSec=5

# copied from dotnet documentation at
# https://docs.microsoft.com/en-us/aspnet/core/host-and-deploy/linux-nginx?view=aspnetcore-3.1#code-try-7
KillSignal=SIGINT
Environment=ASPNETCORE_ENVIRONMENT=Production
Environment=DOTNET_PRINT_TELEMETRY_MESSAGE=false

# This environment variable is necessary when dotnet isn't loaded for the specified user.
# To figure out this value, run 'env | grep DOTNET_ROOT' when dotnet has been loaded into your shell.
Environment=DOTNET_ROOT=/opt/rh/rh-dotnet31/root/usr/lib64/dotnet

[Install]
WantedBy=multi-user.target

Example 4: asp.net core linux systemd

[Unit]
Description=ASP.NET Core web template

[Service]
Type=notify
# will set the Current Working Directory (CWD)
WorkingDirectory=/srv/AspNetSite
# systemd will run this executable to start the service
ExecStart=/srv/AspNetSite/AspNetSite
# to query logs using journalctl, set a logical name here
SyslogIdentifier=AspNetSite

# Use your username to keep things simple, for production scenario's I recommend a dedicated user/group.
# If you pick a different user, make sure dotnet and all permissions are set correctly to run the app.
# To update permissions, use 'chown yourusername -R /srv/AspNetSite' to take ownership of the folder and files,
#       Use 'chmod +x /srv/AspNetSite/AspNetSite' to allow execution of the executable file.
User=yourusername

# ensure the service restarts after crashing
Restart=always
# amount of time to wait before restarting the service
RestartSec=5

# copied from dotnet documentation at
# https://docs.microsoft.com/en-us/aspnet/core/host-and-deploy/linux-nginx?view=aspnetcore-3.1#code-try-7
KillSignal=SIGINT
Environment=ASPNETCORE_ENVIRONMENT=Production
Environment=DOTNET_PRINT_TELEMETRY_MESSAGE=false

# This environment variable is necessary when dotnet isn't loaded for the specified user.
# To figure out this value, run 'env | grep DOTNET_ROOT' when dotnet has been loaded into your shell.
Environment=DOTNET_ROOT=/opt/rh/rh-dotnet31/root/usr/lib64/dotnet

[Install]
WantedBy=multi-user.target

Example 5: asp.net core linux systemd

sudo cp AspNetSite.service /etc/systemd/system/AspNetSite.service
sudo systemctl daemon-reload

Example 6: asp.net core linux systemd

sudo systemctl enable AspNetSite