Quan Nguyen 211211

How to setup Let's Encrypt for Nginx on Ubuntu 18.04 (including IPv6, HTTP/2 and A+ SLL rating)

Virtual hosts

Let's say you want to host domains first.com and second.com.

Create folders for their files:

Code is clean if it can be understood easily – by everyone on the team. Clean code can be read and enhanced by a developer other than its original author. With understandability comes readability, changeability, extensibility and maintainability.

General rules

Follow standard conventions.
Keep it simple stupid. Simpler is always better. Reduce complexity as much as possible.
Boy scout rule. Leave the campground cleaner than you found it.
Always find root cause. Always look for the root cause of a problem.

Design rules

S3 Static Sites

What this will cover

Host a static website at S3
Redirect www.website.com to website.com
Website can be an SPA (requiring all requests to return index.html)
Free AWS SSL certs
Deployment with CDN invalidation

Resources

How to setup next.js app on nginx with letsencrypt

next.js, nginx, reverse-proxy, ssl

1. Install nginx and letsencrypt

$ sudo apt-get update
$ sudo apt-get install nginx letsencrypt

Also enable nginx in ufw

Based on this blogpost.

Install with Homebrew:

$ brew install postgresql@14

(The version number 14 needs to be explicitly stated. The @ mark designates a version number is specified. If you need an older version of postgres, use postgresql@13, for example.)

	//Usage
	import React from 'react';
	import { BrowserRouter as Router } from 'react-router-dom';
	import Route from './AuthRoute';

	import Login from './Login';
	import Private from './Private';

	export default () =>
	<Router>

	const admin = require('firebase-admin');
	const elasticsearch = require('elasticsearch');

	// Config before running
	const CONFIG = {
	limit: 1000, // reduce if got Deadline exceeded error
	index: 'stock',
	type: 'doc',
	dev: {
	serviceAccountJson: './devServiceAccount.json',

	const elasticsearch = require('elasticsearch');

	const esClient = new elasticsearch.Client({
	host: 'YOUR ELASTICSEARCH SERVER'
	});

	/**
	* Get all documents of an Elasticsearch index by scroll method
	* @param {string} index Index to get documents
	* @param {Object} query Querying object