systemd

Overview

systemd is the init system and service manager on mainstream Linux distributions. Services, timers, sockets and mounts are described by declarative unit files; systemd starts them in dependency order, restarts them on failure, applies resource limits and sandboxing, and collects their output in the journal. Unit files for your own services live in /etc/systemd/system/ (system) or ~/.config/systemd/user/ (per-user, managed with systemctl --user). Syntax below was checked with systemd-analyze verify on systemd 255.

Instructions

Step 1: Create a service

# /etc/systemd/system/orders-api.service
[Unit]
Description=Orders API (Node.js)
After=network-online.target postgresql.service
Wants=network-online.target
Requires=postgresql.service