Create systemd service - daemon (Ubuntu 15+)


Setup

Start by creating a file: /etc/systemd/system/CUSTOM_SERVICE_NAME.service with the following content:

[Unit]
Description=CUSTOM_SERVICE_DESCRIPTION

[Service]
ExecStart=/opt/www/EXEC_FILE
WorkingDirectory=/opt/www
Restart=always

[Install]
WantedBy=multi-user.target

Enable the service. It will start automatically on boot, after that.

$ sudo systemctl enable CUSTOM_SERVICE_NAME.service

Check status/start/stop/restart

$ sudo systemctl {status|start|stop|restart} CUSTOM_SERVICE_NAME

A complete list with all available directives that can be used inside the service file can be found here

Legend

  • CUSTOM_SERVICE_DESCRIPTION - a short description for the current service
  • CUSTOM_SERVICE_NAME - the name of service
  • EXEC_FILE - exec file name with the absolute path

Example 1 for a webservice written in Golang

You must have a new folder api in the root /home/ubuntu/. The main file it’s the binary file resulted after go compilation. In my example I use flags to set environment --env=dev, this is not mandatory.

[Unit]
Description= Go API Webservice Example

[Service]
ExecStart=/home/ubuntu/api/main --env=dev
WorkingDirectory=/home/ubuntu/api
Restart=always

[Install]
WantedBy=multi-user.target

Example 2 for a javascript

You must have create a web folder into /home/ubuntu/ root folder. The npm must be installed before and use the absolute path in ExecStart command, as you can see in the below example /usr/bin/npm.

[Unit]
Description=Javascript Web Application Example

[Service]
ExecStart=/usr/bin/npm run start
WorkingDirectory=/home/ubuntu/web/
Restart=always

[Install]
WantedBy=multi-user.target

Usefull command

$ service --status-all - display all services

  • [ + ] for running services
  • [ - ] for stopped services
  • [ ? ] for services without a ‘status’ command

Newsletter


Related Posts

Get your Jenkins Passwords from secrets

How to get your Jenkins passwords from your secrets credentials. Follow this simple tutoriale and find your password or ssh private key.

How to launch a 6 figures startup with 0$ investment

Are you curious how to launch a startup in the fast and effective way? Here's not the answer, but you can understand how to achieve it

How to cold email

How to cold email - a practical guide about how to use cold email in your activity as a CEO of a software agency or startup owner.

Linux disk space alerts on Discord

Linux disk space alerts. Check your space and be responsible with your project. Take care of your space and don't crack the project.

Git clone private repo in docker

A simple how to guide to use git clone of a private repository inside docker container. With vuejs / nodejs app.

How to detect the browser language in javascript

How to detect the browser language in javascript in just a line of code. The method is working on all major browser

You don't need a macbook pro to be a pro

You don't need a macbook pro to be a pro! You need a laptop and internet connection, and a brain, but you already have it

Free templates for startup

Free HTML templates for startup or a new project. A complete list with free resources to build your next startup's website and gain the traction to the sky.

What I learned to never do in a presentation meeting

What I learned to never do in a presentation meeting. I had a very bad meeting experience with a gateway provider.

Startup graveyard is a series of killed projects that made millions in revenue per year

Startup graveyard is a series of killed projects that made millions in revenue per year. Just watch their graveyard and do it your own. What better validation do you expect.