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How to deploy a Rails 7.1 app with Postgres and Kamal on a single server

I think you have looked at the tutorial from Mr. Heinemeier Hansson at least once or twice and have a similar setup.

rails new kamal_pg --css tailwind --skip-test --database=postgresql

cd kamal_pg

doSomething().then(function () {

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	#!/bin/bash

	# This script takes a clean Ubuntu Server 24.04 LTS AMI and installs and configures
	# everything needed to deploy a Rails 7 app to it. The resulting state is a secure,
	# production-ready instance.

	set -euo pipefail

	# --- AESTHETICS ---

	const minute = 60;
	const hour = minute * 60;
	const day = hour * 24;
	const week = day * 7;
	const month = day * 30;
	const year = day * 365;

	/**
	* Convert a date to a relative time string, such as
	* "a minute ago", "in 2 hours", "yesterday", "3 months ago", etc.