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Deploying node.js applications to Windows Azure Websites

What are Azure Websites

A website is an application container in Windows Azure for running your code. The way it works is you create a website and then deploy your application to it. Windows Azure then takes care of hosting your app in the cloud, allowing it to scale, etc.

Azure Websites have some really nice benefits for node development

  • Cheap - 10 free sites out of the box
  • Fast - Deploy really quickly using git, github, mercurial, dropbox or FTP!
  • Scalable - Easily scale up number of instances and underlying hardware
  • Great for node
    • Fully supports hosting node apps
    • Downloads npm packages on the fly
    • Streaming of node output logs
    • Debugging support

Deploying your first app - Express

Create an express app

npm install express -g
express

Create a Website to deploy with git

azure site create *site* --git

This automatically provisions a new Website and creates a local git repo

Deploy your website

git add .
git commit -am "first commit"
git push azure master

View the app

azure site browse

Make an edit

Go update one of the files like the index.jade file

git commit -am "another update"
git push azure master
azure site browse

List sites

azure site list

Delete sites

azure site delete [site]

Show site details

azure site show [site]

Github deployment (supports SSH)

Create a site that is connecting to a github repo

azure site create *site* --github

This will create a website that is linked to a github repo. Every time you push to github the site will be updated.

Debugging

Configuring

  • Edit your iisnode.yml and set "koggingEnabled" and "devErrorsEnabled" to true.
  • Make an error in your code like requiring a module that does not exist.

Commit and browse to see debugger errors

git commit -am "setting debug"
git push azure master
azure site browse

Stream the output

azure site log tail

Managing deployments

List out your deployments

azure site deployment list

Redeploy

azure site deployment redeploy *deployment_id*

Configuring environment variables

You can use the CLI to set environment variables which instantly propagate to your app. Very useful for staging / production like settings which you don't want hard coded.

Make a change in your index.jade to display a "foo" environment variable i.e.

#{process.env.foo}

Commit

git commit -am "adding env"
git push azure master

Set the environment var

azure site config add foo=bar

View the site

azure site browse