How to Deploy DoneJS Applications to Linode with Nanobox
DoneJS is an open source JavaScript framework, build with Node.js, that makes it easy to build high performance, real-time web and mobile applications. Linode offers "lighting-quick" SSD servers, 24/7 support, and is an all-around simple, powerful, and reliable cloud provider.
In this article, I'm going to walk through deploying a DoneJS application to Linode using Nanobox. Nanobox uses Docker to build local development and staging environments, as well as scalable, highly-available production environments on Linode.
Before You Begin
If you haven't already, create a free Nanobox account and download Nanobox Desktop.
Setup A Done Project
Prerequisite: This guide assumes you already have Node and NPM installed. If not, you can quickly install Node (which includes NPM) and return.
Where to start:
- I'm starting from scratch - Walks you through the process of installing Done and creating a new app.
- I'm configuring an existing app - Assumes you already have Done installed with an existing app.
Starting From Scratch
Install donejs
and create a new app:
# install donejs
npm i -g donejs
# create a new app
donejs add app nanobox-done
# go through the setup guide changing any options you'd like,
# otherwise defaults are fine.
# change into your new app and test it (optional)
cd nanobox-done && donejs develop
NOTE: If you want to use donejs start
with Nanobox (rather than npm start
) you'll either need to ensure that donejs
is included in your package.json
or install it as an extra_step
in your boxfile.yml
Configure Your App
Nanobox uses a simple yaml config file called the boxfile.yml
to build and configure your app's environment.
Add a boxfile.yml
Create a boxfile.yml
in the root of your project with the following:
run.config:
engine: nodejs
extra_packages:
- nginx
web.main:
start:
nginx: nginx -c /app/etc/nginx.conf
done: npm start
data.db:
image: nanobox/postgresql:9.5
NOTE: You may need to modify some boxfile configurations specific to your project (such as the database). You'll find more info on this in the docs and guides.
Test Your App Locally (optional)
Nanobox comes with a local development environment that allows you to run your app locally before you deploy it.
# (optional) add a DNS alias to access your app from the browser
nanobox dns add local done.local
# start your app
nanobox run npm start
If you added a DNS alias, access your app at done.local:3000. If not, you can access it via the IP provided in the console after you've started your server.
Whenever you exit out of the Nanobox console, it'll shut down your VM and drop you back into your host OS.
Configure Done
IMPORTANT: Whether you created the application yourself or with the generator, there are three important pieces of configuration that every application must have:
- Your app must bind to all IP's (0.0.0.0). Why?
- Your app must listen on port 8080. Why?
- Your app must use environment variables (evars) to connect to Nanobox services. Why?
Done binds to 0.0.0.0 by default, so no additional config is needed.
Update the Database Connection
When Nanobox spins up a database, it generates environment variables (evars) for the necessary connection credentials.
Done is pretty free-form when it comes to configuring a database connection. However you choose to configure yours, you can access the following evars:
process.env.DATA_DB_HOST
process.env.DATA_DB_USER
process.env.DATA_DB_PASS
The following is an example database configuration using Postgres:
Install a Database Adapter
# install your database adapter (in this case postgres) and save it as a dependency
npm i pg-promise --save
NOTE: If you're using a different database (such as MongoDB) you'll need to install the corresponding adapter.
Create a Database Connection
Create a config/database.js
and add the following:
const host = process.env.DATA_DB_HOST
const user = process.env.DATA_DB_USER
const pass = process.env.DATA_DB_PASS
const pgp = require('pg-promise')(/*options*/)
const db = pgp(`postgres://${user}:${pass}@${host}:5432/database`)
This is a very simple example of a database connection. The actual details will be up to you, based on the requirements of your application.
NOTE: Nanobox provides a default database named gonano
, but you're welcome to create your own. Also, Nanobox will always use a service's default port when trying to connect. So in this example use 5432
, Postgres' default.
Configure Nginx (optional)
It's recommended to use an Nginx reverse proxy to serve static assets. Most Node frameworks are compiled and served static.
Create an etc/nginx.conf
in your project with the following contents:
worker_processes 1;
daemon off;
events {
worker_connections 1024;
}
http {
include /data/etc/nginx/mime.types;
sendfile on;
gzip on;
gzip_http_version 1.0;
gzip_proxied any;
gzip_min_length 500;
gzip_disable "MSIE [1-6]\.";
gzip_types text/plain text/xml text/css
text/comma-separated-values
text/javascript
application/x-javascript
application/atom+xml;
# Proxy upstream to done
upstream done {
server 127.0.0.1:3000;
}
# Configuration for Nginx
server {
# Listen on port 8080
listen 8080;
# Settings to serve static files
location ^~ /static/ {
root /app/;
}
# Serve a static file (ex. favico)
# outside /static directory
location = /favico.ico {
root /app/favico.ico;
}
# Proxy connections to done
location / {
proxy_pass http://done;
proxy_redirect off;
proxy_set_header Host $host;
}
}
}
That's it! On to the main event, deploying your application!
Setup Your Linode Account
If you haven't already, create a Linode account. In your Linode user profile, go to the "API Keys" section and generate a new API key.
Keep this key handy. You're going to need it in just a bit.
Add a New Provider to Your Nanobox Account
Select Linode and click "Proceed."
Nanobox needs your Linode API key to authenticate with your Linode account. Paste in API key and click "Verify & Proceed."
Name your provider and choose a default region. The name is arbitrary and only meant to help you identify it in your list of provider accounts.
Launch a New App
Go to the home page of your Nanobox dashboard and click the "Launch New App" button. Select your Linode provider from the dropdown and choose the region in which you'd like to deploy your app.
Confirm and click "Let's Go!" Nanobox will order a server on Linode under your account. When the server is up, Nanobox will provision platform components necessary for your app to run:
- Load-Balancer: The public endpoint for your application. Routes and load-balances requests to web nodes.
- Monitor: Monitors the health of your server(s) and application components.
- Logger: Streams and stores your app's aggregated log stream.
- Message Bus: Sends app information to the Nanobox dashboard.
- Warehouse: Storage used for deploy packages, backups, etc.
Once all the platform components are provisioned and running, you're ready to deploy your app.
Stage Your App Locally
Nanobox provides "dry-run" functionality that simulates a full production deploy on your local machine. This step is optional, but recommended. If the app deploys successfully in a dry-run environment, it will work when deployed to your live environment.
nanobox deploy dry-run
More information about dry-run environments is available in the Dry-Run documentation.
Deploy
Add Your New App as a Remote
From the root of your project directory, add your newly created app as a remote.
nanobox remote add app-name
This connects your local codebase to your live app. More information about the remote
command is available in the Nanobox Documentation.
Deploy to Your Live App
With your app added as a remote, you're ready to deploy.
nanobox deploy
Nanobox will compile and package your application code, send it up to your live app, provision all your app's components inside your live server, network everything together, and voila! Your app will be live on Linode.
Manage & Scale
Once your app is deployed, Nanobox makes it easy to manage and scale your production infrastructure. In your Nanobox dashboard you'll find health metrics for all your app's servers/containers. Your application logs are streamed in your dashboard and can be streamed using the Nanobox CLI.
Although every app starts out on a single server with containerized components, you can break components out into individual droplets and/or scalable clusters through the Nanobox dashboard. Nanobox handles the deep DevOps stuff so you don't have to. Enjoy!
Get in Touch
Additional Links
- boxfile.yml Documentation
- Scaling Documentation
- Live App Management
- General Documentation
- Language & Framework Guides
FAQ
Why 0.0.0.0
Nanobox uses Docker to containerize your application within its own private network. Using 127.0.0.1
or localhost
(the "loopback" IP) inside of a container will loopback to the container, not the host machine. In order for requests to reach your application, your application needs to listen on all available IP's.
Why Port 8080
Nanobox provides your application with a router that directs traffic through a private network created for your app. The router listens on ports 80 and 443, terminates SSL, and forwards all requests to port 8080.
Note: Your app/framework can listen on a port other than 8080, but you will need to implement a proxy that listens on 8080 and forwards to your custom port.
Why Use Environment Variables
Environment variables serve two purposes:
-
They obscure sensitive information in your codebase. Environment variables referenced in your code are populated at runtime, keeping potentially sensitive values out of your codebase.
-
Due to the dynamic nature of containerized applications, it's hard to predict the host IP of running services. These IP's are subject to change as your infrastructure changes. When creating your infrastructure, Nanobox knows what these values are and creates evars for necessary connection details.
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