How to restart a daemon service if it crashes?

Question

I created a little daemon service in Ubuntu which works pretty well, I have a question about the crash of my application.

This service execute an app that I developed, but could happen that this app will crash, so I need to restart it automatically.

Inside the service I wrote:

[Unit]
Description = Hello World Daemon

[Service]
ExecStart = /usr/bin/dotnet /home/my username/Desktop/publish/SimpleApp.dll
Restart = on-failure

[Install]
WantedBy = multi-user.target

as you can see I have Restart = on-failure I want to know if this line is enough to restart the service automatically when the app crash. Thanks.

Answer 1

[Unit]
...

[Install]
...

[Service]
...
...
Restart=always
RestartSec=3
...

The value of the Restart parameter is set to always. This means service will restart for clean or unclean exit codes or timeouts. That's where an automatic restart is defined in systemd.

Answer 2

Restart = always 

这应该够了吧。