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1.  Open a command prompt and navigate to /etc/nginx/ssl
2.  issue "openssl req -new -newkey rsa:2048 -nodes -keyout server.key -out server.csr"
  

3. Get your certificate - Go to your certificate authority and give them the CSR

4. copy your new crt to the /etc/nginx/ssl and give it read priveledges

5. reconfigure your nginx.conf, here is mine.  The first part redirects 80 to 443, the second part listens to 443 and is optimized to return Ruby on Rails application requests using gzip and unicorn.  

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<%= f.select :country_id, options_for_select(@countries.map{ |c| [c.name, c.id, {'data-currency_code'=>c.currency_code}] }) %>

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When starting a project that includes refinerycms-blog:

$ rake refinery:override view=refinery/pages/*
$ rake refinery:override view=layouts/*
$ rake refinery:override view=refinery/blog/shared/*
$ rake refinery:override view=refinery/blog/posts/*
$ rake refinery:override view=refinery/*
$ rake refinery:override controller=refinery/blog/*
$ rake refinery:override controller=refinery/*

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$( document ).ready( function() {

    $( "input.date" ).datepicker({
        minDate: moment().subtract( "months", 1 ).toDate(),
        maxDate: moment().add( "months", 1 ).toDate(),
        dateFormat: "d M, y",
        constrainInput: true,
        beforeShowDay: $.datepicker.noWeekends
    });

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/**
 * Sample React Native App
 * https://github.com/facebook/react-native
 */
'use strict';

var React = require('react-native');
var {
  AppRegistry,
  StyleSheet,

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# Download and Install the Latest Updates for the OS
apt-get update && apt-get upgrade -y

# Set the Server Timezone to CST
echo "America/Chicago" > /etc/timezone
dpkg-reconfigure -f noninteractive tzdata

# Enable Ubuntu Firewall and allow SSH & MySQL Ports
ufw enable
ufw allow 22

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Nginx and Puma for Ruby on Rails

When a lot of people are working on the same Rails application, than Vagrant could help to set up environment quick and easy. Even Vagrant is not recommended for production, it is very usefull for testing deployment script. For production we can simply copy deployment script and run manually.

We can deploy Ruby on Rails app using a quick way to deploy ruby on rails on vagrant.

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You can check here for getting the latest version. Change the wget url to download newer versions.

Install instructions
wkhtmltopdf 0.12.4 - Ubuntu 16.04 x64
wkhtmltopdf 0.12.5 - Ubuntu 16.04 x64
wkhtmltopdf 0.12.5 - Ubuntu 18.04 x64
wkhtmltopdf 0.12.5 - MacOS High Sierra 10.13.6 & Mojave 10.14
Install verification

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/etc/supervisor/conf.d/sidekiq.conf

[program:sidekiq]
command=/usr/local/bin/sidekiq.sh
directory=/usr/local/bin/
user=ubuntu
startsecs=10
autostart=true
autorestart=true
stdout_logfile=/var/log/supervisor/sidekiq.log

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Moved to git repository: https://github.com/denji/nginx-tuning

NGINX Tuning For Best Performance

For this configuration you can use web server you like, i decided, because i work mostly with it to use nginx.

Generally, properly configured nginx can handle up to 400K to 500K requests per second (clustered), most what i saw is 50K to 80K (non-clustered) requests per second and 30% CPU load, course, this was 2 x Intel Xeon with HyperThreading enabled, but it can work without problem on slower machines.

You must understand that this config is used in testing environment and not in production so you will need to find a way to implement most of those features best possible for your servers.