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A reverse proxy powered by Traefik for deploying the Reaction Platform on Digital Ocean

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Deploy the Reaction Platform on Digital Ocean

Overview

This deployment guide's purpose is to provide a simple and easy guide on how to deploy the Reaction platform for evaluation purposes or small deployments. This guide is not meant to generate an enterprise production grade deployment. This deployment guide does not use Kubernetes, instead, Docker Compose is used to manage containers.

Table of Contents

Requirements

  • A Linux host with at least 2GB of RAM, this guide uses a DigitalOcean droplet
  • A registered domain
  • A DNS manager that supports Certification Authority Authorization (CCA) records, such as Digital Ocean
  • Docker
  • Docker Compose
  • Git
  • Node
  • Yarn
  • Some familiarity with Traefik

Reaction Platform Services Overview

Reaction GraphQL API

The Reaction GraphQL API service provides the interface to the Reaction core functionality.

Storefront

The example storefront service provides the public facing storefront interface that customers will interact with.

Reaction Admin

The Reaction Admin service is a Meteor(currently being migrated off Meteor) application that provides the admin UI to manage products, orders etc.

Getting Started

Reaction services will be exposed to the public using Traefik, which is a cloud native router. Traefik will act as a reverse proxy that will route traffic to Docker containers. As stated above, you will need a registered domain to complete this step, as it will be necessary to manage DNS records for it.

This guide will use the following sub-domains, where example.com will need to be substitute it with your domain:

subdomain description
api.example.com The Reaction GraphQL API
storefront.example.com The example storefront
admin.example.com The Reaction admin interface
traefik.example.com Traefik's admin UI

Each of your domains will need an A DNS record that resolves to your host's IP. It's recommend to use DigitalOcean's free DNS manager. Further, in order to obtain SSL certificates for your sub-domains, you will need a DNS manager that supports CAA records.

Further, you will need a DigitalOcean Auth token to generate CAA records for your sub-domains.

Automated Server Configuration

In order to expedite the installation of server dependencies, Ansible will be used to automate most of the server configuration.

Prepare the Remote Host

In this guide a DigitalOcean node will be used to host the Reaction Platform. If you don't yet have an account, create one at digitalocean.com. Once you are signed into your account, create a new droplet using the Ubuntu 18.4 image with at least 2GB of RAM. Enable DigitalOcean's free firewall and add inbound rules for SSH, HTTP, HTTPS and add your droplet to the firewall.

After the droplet is created either select an existing SSH key to login or click on the "New SSH Key" under the authentication section and copy your public SSH key from your local computer.

Copy the newly created IP address and verify that you can login into the new server by executing:

ssh root@XXX.XXX.XXX.XXX
Prepare the Control Node

Ansible requires a control node, which is a computer that manages a remote host. This guide will assumes a Mac laptop/desktop as the control node.

Install Ansible using homebrew, this guide assumes some familiarity with Ansible, if you need an introduction to basic concepts click here.

brew install ansible

Also install python3 to avoid deprecation warnings,

brew install python3

Configure the remote host to be managed with Ansible

On the control node(i.e. a developer's machine) create an inventory file in which python3 is specified as the interpreter. On your machine, create a new file at named hosts at /etc/ansible.

Create inventory file

touch /etc/ansible/hosts

Add the following content to the inventory file:

[servers]
reaction.server

[servers:vars]
ansible_python_interpreter=/usr/bin/python3
[web]

Edit your hosts file

sudo vim /etc/hosts

and add an entry for the DigitalOcean droplet,

XXX.XXX.XXX.XXX reaction.server

Verify that Ansible can communicate with your remote host by executing:

ansible all -m ping -u root

Your should see output similar to:

reaction.dev | SUCCESS => {
    "changed": false,
    "ping": "pong"
}
Set Ansible Environment Variables

Before executing the Ansible playbook, it's necessary to set variables that are specific to your deployment. Find the vars section in the reaction.yml playbook and update as necessary, below is a list of the variable that need to be updated and a description of each.

Variable Description
do_auth_token The Authentication token for the Digital Ocean API
email An email address to receive SSl certificate notifications
domain Your registered domain

For the rest of the variables, the default values should be used, DO NOT change otherwise, the playbook might fail.

Execute the playbook

Now it's time to execute the reaction.yml playbook, which automates most of the tedious server configuration tasks, execute the following command:

ansible-playbook playbooks/reaction.yml -l reaction.server

NOTE: the -l reaction.server limits the execution of the playbook to the reaction.server host.

Create the Primary Shop

At this point the Reaction GraphQL API, Example Storefront, Reaction Admin, Reaction Identity and Hydra should be accessible over the internet.

To create the primary shop login into the Reaction Admin at the following URL, first substitute the example.com with your actual domain:

https://admin.example.com

Upon navigating to the Reaction Admin interface, you will be presented with a login form, it will be necessary to create a user first, so click on the "Register" link and fill out the form. Once logged in, proceed to create a shop in the admin interface.

Further, the GraphQL API explorer will be available at https://api.example.com/graphql.

Video Tutorial

Deploy the Reaction Platform on DigitalOcean

Command Cheatsheet

The following bash aliases are automatically added to the remote server for convenience.

# Docker Compose
alias dc='docker-compose'

# Bring all services down
alias dcd='docker-compose down'

# Attach to all logs of all services
alias dcl='docker-compose logs -f'

# Run a comand inside a running container
alias dcr='docker-compose run --rm'

# "Restart" all services
alias dcre='docker-compose down && docker-compose up -d && docker-compose logs -f'

# Bring all services up in daemon mode
alias dcu='docker-compose up -d'

# Bring all containers up and attach to their logs
alias dcul='docker-compose up -d && docker-compose logs -f'

# Remove exited containers
alias dprune='docker ps -aq --no-trunc -f status=exited | xargs docker rm'

# Show all running containers, with horizontal paging
alias dps='docker ps -a | less -S'

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