# OpenDAX

OpenDAX is a multi-service container system for building your crypto-currency exchange

#Getting started

# VM requirements

Minimum:

• 8GB to 12GB of RAM
• 4 to 6 cores vCPU
• 300GB SSD disk

DigitalOcean, Vultr, GCP, AWS or any dedicated servers Ubuntu, Debian, Centos would work

# Preparing the VM

#Create Unix user

SSH using root user, then create new user for the application

useradd -g users -s `which bash` -m app

#Install Docker and docker compose

We highly recommend using docker and compose from docker.com install guide, do not use the system provided package which would be deprecated.

Docker follow instruction here: docker Docker compose follow steps: docker compose

#Install ruby in user app

#Change user using

su - app

#Clone OpenDAX

git clone https://github.com/openware/opendax.git

#Install RVM

gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
curl -sSL https://get.rvm.io | bash -s stable
cd opendax
rvm install .

# Bundle install depedencies

bundle install
rake -T # To see if ruby and lib works

Using rake -T you can see all available commands, and can create new ones in lib/tasks

# Paste you domain and license key

Edit the file config/app.yml Replace the license key in this block:

license:
  url: "https://www.openware.com/api/v2/tenko"
  license_key: "PASTE-KEY-HERE"

# Run everything

#Configure your Domain

If using a VM you can point your domain name to the VM ip address before this stage. Recommended if you enabled SSL, for local development edit the /etc/hosts

Insert in file /etc/hosts

0.0.0.0 www.app.local

#Bring up everything

rake service:all

You can login on www.app.local with the following default users from seeds.yaml

Seeded users:
Email: [email protected], password: 0lDHd9ufs9t@
Email: [email protected], password: Am8icnzEI3d!

#Usage

# Initial configuration

All the OpenDax deployment files have their confguration stored in config/app.yml.

Feel free to fill it out with correct values:

Once you're done with the configuration, render the files using rake render:config. You can easily apply your changes at any time by running this command.

Note: be sure to append all the subdomains based on app.domain to your
/etc/hosts file if you're running OpenDax locally

# Bringing up the stack

The OpenDax stack can be brought up using two ways:

1. Bootstrap all the components at once using rake service:all[start]
2. Start every component one by one using rake service:*component*[start]

The components included in the stack are:

• proxy - Traefik, a robust cloud native edge router/reverse proxy written in Go
• backend - Vault, MySQL, Redis and RabbitMQ grouped together
• cryptonodes - cryptocurrency nodes such as parity [Optional]
• daemons - Peatio daemons and Ranger [Optional]
• setup - setup hooks for Peatio and Barong to run before the application starts(DB migration etc.)
• app - Peatio, Barong and the Ambassador API gateway
• frontend - the frontend application located at vendor/frontend
• tower - the Tower admin panel application located at vendor/tower

For example, to start the backend services, you'll simply need to run rake service:backend[start]

Note: all the components marked as [Optional] need to be installed using
rake service:*component*[start] explicitly

Go ahead and try your deployment on www.your.domain!

# Stopping and restarting components

Any component from the stack can be easily stopped or restarted using rake service:*component*[stop] and rake service:*component*[restart].

For example, rake service:frontend[stop] would stop the frontend application container and rake service:proxy[restart] would completely restart the reverse proxy container.

# Managing component deployments

Each component has a config file (ex. config/frontend/tower.js) and a compose file (ex. compose/frontend.yaml).

All config files are mounted into respective component container, except from config/app.yml - this file contains all the neccessary configuration of opendax deployment

Compose files contain component images, environment configuration etc.

These files get rendered from their templates that are located under templates directory.

#How to update component image?

Modify config/app.yml with correct image and run rake:service[all] This will rerender all the files from templates directory and restart all the running services.

Alternitavely you can update the following files:

• config/app.yml
• templates/compose/*component*.yml
• compose/*component*.yml And run rake service:component[start]

#How to update component config?

Modify config/*component*/*config* and run rake service:component[start], if you want the changes to be persistent, you also need to update templates/config/*components*/*config*

#Render compose file

# Delete all generated files
git clean -fdx

# Re-generate config from config/app.yml values
rake render:config

# Restart the container you need to reload config
docker-compose up frontend -Vd

#Clone the vendors and start

source ./bin/set-env.sh
rake vendor:clone
docker-compose -f compose/vendor.yaml up -d

#Terraform Infrastructure as Code Provisioning

You can easily bring up Opendax from scratch on Google Cloud Platform using Terraform!

To do this, just follow these simple steps:

• Fill app.yml with correct values
• Run rake terraform:apply
• Access your VM from the GCP Cloud Console
• Have fun using it!

To destroy the provisioned infrastructure, just run rake terraform:destroy

#Installer tool

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/openware/opendax/master/bin/install)"