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EC2 Price Tracker

This application collects and displays prices for EC2 spot instances over time. It's written in Python using the Tornado web framework. A periodic task ec2price collector grabs spot price data from the EC2 API using botocore and stores it in a Postgres database. The web interface ec2price web displays graphs of the data using NVD3.js.

Instructions for running on Heroku

$ git clone https://github.com/grosskur/ec2price.git
$ cd ec2price
$ heroku create your-ec2price
$ heroku addons:add heroku-postgresql:dev
$ heroku pg:promote $(heroku config -s | awk -F= '$1 ~ /^HEROKU_POSTGRESQL_[A-Z]+_URL$/ {print $1}')
$ heroku config:set COOKIE_SECRET=$(python -c "import base64, uuid; print base64.b64encode(uuid.uuid4().bytes + uuid.uuid4().bytes)")
$ heroku config:set AWS_ACCESS_KEY_ID=...
$ heroku config:set AWS_SECRET_ACCESS_KEY=...
$ heroku pg:psql < ec2price/sql/schema.sql
$ heroku pg:psql < ec2price/sql/initial.sql
$ git push heroku master
$ heroku run env HOURS=24 scripts/ec2price collector
$ heroku addons:add scheduler:standard

Then go to the Heroku dashboard and add a scheduled job to run scripts/ec2price collector every 10 minutes.

To do

  • Experiment with Rickshaw for graph drawing
  • Use D3 option interpolation: 'step-after' for staircase lines

See also