/crypto-exchange-software

Open-Source Cloud-Native Digital Asset & Cryptocurrency Exchange Platform

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OpenDAX

OpenDAX is an open-source cloud-native multi-service platform for building a Blockchain/FinTech exchange of digital assets, cryptocurrency and security tokens.

Getting started with OpenDAX

1. Get a VM

Minimum VM requirements for OpenDAX:

  • 8GB of RAM (12GB recommended)
  • 4 cores vCPU (6 cores recommended)
  • 300GB disk space (SSD recommended)

A VM from any cloud provider like DigitalOcean, Vultr, GCP, AWS as well as any dedicated server with Ubuntu, Debian or Centos would work

2. Prepare the VM

2.1 Create Unix user

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

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

2.2 Install Docker and docker compose

We highly recommend using docker and compose from docker.com install guide instead of the system provided package, which would most likely be deprecated.

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

2.3 Install ruby in user app

2.3.1 Change user using
su - app
2.3.2 Clone OpenDAX
git clone https://github.com/openware/opendax.git
2.3.3 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 .

3. Bundle install dependencies

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

4. Run everything

4.1 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

4.2 Render all config files

Simply run rake render:config

4.3 Set up Vault

Note: Everything is persisted on the local filesystem, thus API keys and 2FA tokens are preserved between restarts. However, Vault needs to be unsealed after every stop/restart.

To set up Vault, go through the following steps:

  • docker-compose up -d vault
  • docker-compose exec vault sh
  • vault operator init
  • Save the output to a file in a secure place
  • Unlock Vault with three different unlock keys - vault operator unseal *unseal_key*
  • vault login *root_token*
  • vault secrets enable totp
  • vault secrets enable transit
  • vault secrets disable secret
  • vault secrets enable -path=secret -version=1 kv

Add the Vault root token to config/app.yml, render the configs and start the app services. Afterwards, Vault should be fully configured and ready to work with Peatio and Barong.

4.4 Bring everything up

rake service:all

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

Seeded users:
Email: admin@barong.io, password: 0lDHd9ufs9t@
Email: john@barong.io, password: Am8icnzEI3d!

[Optional] KYCAID

In order to accelerate customer interaction, reduce risks and simplify business processes you can use KYC Verification Service from KYCaid. KYC goal is to prevent fraud and to decline users that don’t fulfill certain standards of credibility. To learn more about KYCaid and pricing you can visit their website - kycaid.com

How to configure KYCAID on the platform?

KYCAID is already integrated into our stack, to use it you'd need to create an account on kycaid.com, and set up authentification creds there.

After that all you have to do is to change several lines in config/app.yml:

kyc:
  provider: kycaid
  authorization_token: changeme             # your production API token from the 'Settings' section of kycaid.com
  sandbox_mode: true                        # 'true' for test environments - documents will be verified/rejected automatically, without payment for verification
  api_endpoint: https://api.kycaid.com/
Additional settings for KYCAID
  • Be sure to check BARONG_REQUIRED_DOCS_EXPIRE ENV value inside config/barong.env to be false if you want to include address verification in your KYC process. You can set it to true if you need the document check only.
  • Check if you have the correct list of document_types in the config/barong/barong.yml file:
    • Passport
    • Identity card
    • Driver license
    • Address
  • Frontend KYC steps can be configured in templates/config/frontend/env.js.erb via the kycSteps field
  • Tower KYC labels can be configured in templates/config/frontend/tower.js.erb via the labelSwitcher field

Usage

Initial configuration

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

app.yml

The following table lists the configurable parameters of the config/app.yml configuration file and its default values.

Parameter Description Default
app.name global application name "OpenDax"
app.domain base domain name app.local
subdomain subdomain www
render_protect enable read-only mode for rendered files false
csrfEnabled enable CSRF protection on Barong false
ssl.enabled enable SSL certificate generation false
ssl.email email address used for SSL certificate issuing "support@example.com"
images Docker image tags per component
vendor.frontend optional Git URL for a development frontend repo git@github.com:openware/baseapp.git
kyc.provider KYC provider, can be kycaid or local kycaid
kyc.authorization_token optional API token for KYCAID use changeme
kyc.sandbox enable KYCAID test mode true
kyc.api_endpoint API endpoint for KYCAID https://api.kycaid.com/
vault.token Vault authentication token changeme
database.host database host name db
database.port database port 3306
database.user database username root
database.password database root password changeme
storage.provider object storage provider "Google"
storage.bucketname storage bucket name "opendax-barong-docs-bucket"
storage.endpoint S3-compatible storage API endpoint "https://fra1.digitaloceanspaces.com"
storage.region storage region "fra1"
storage.signatureVersion S3-compatible storage API signature version(2 or 4) "fra1"
storage.secretkey, storage.accesskey storage access keys "changeme"
twilio Twilio SMS provider configs
gaTrackerKey Google Analytics tracker key inserted into the frontend app
smtp SMTP configs used for sending platform emails
captcha captcha configuration(Recaptcha or Geetest)
wallets configs for wallets seeded during the initial deployment of Peatio
parity Parity cryptonode configuration
bitcoind Bitcoind cryptonode configuration
litecoind Litecoind cryptonode configuration
terraform.credentials local path to a GCP service account JSON key "~/safe/opendax.json"
terraform.project GCP project name "example-opendax"

utils.yml

The following table lists configurable parameters of the config/utils.yml file:

Parameter Description Default
images Docker image tags per component
superset Superset BI tool configs
arke Arke liquidity bot configs

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 and Ranger daemons [Optional]
  • setup - setup hooks for Peatio and Barong to run before the application starts (DB migration etc.)
  • app - Peatio is the crypto exchange software, Barong and the Ambassador API gateway
  • frontend - the frontend application located at vendor/frontend
  • tower - the Tower admin panel application located at vendor/tower
  • monitoring - cAdvisor and Node Exporter monitoring tools [Optional]

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 own OpenDAX exchange deployment!

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 respective 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 deploy 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

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)"

Happy trading with OpenDAX!

If you have any comments, feedback and suggestions, we are happy to hear from you here at GitHub or here: crypto exchange software