Amazon start and stop

This is a sample "script" to schedule start and stop Amazon EC2 instances based on a date time range, i.e. start at 6AM and stop at 12AM.

Have a look at AWS Calculator to see how much you can save by stopping unsed instances from 12AM to 6AM (save 25%) or other date time ranges.

Usage

Checkout amazon_start_stop.

$ git clone git@github.com:austra/amazon_start_stop.git
$ cd amazon_start_stop

Heroku

Create a Heroku account if don't have one and install the Heroku Toolbelt.
Create a new app.

$ heroku apps:create

Deploy

$ git push heroku master

Configure Environment Variables

Configure your app settings using Heroku config vars.

Get your AWS credentials here: AWS Credentials.

Rename .env.sample to .env or Create a file named .env and add the following, customized to your needs:

# .env
AWS_ACCESS_KEY_ID=""
AWS_SECRET_ACCESS_KEY=""

# Leave blank if you don't need to associate an Elastic IP
# (everytime you stop an instance Amazon dissociates Elastic IPs)
AWS_ELASTIC_IP=""

# The instance id to start and stop i.e. i-1a1aa111
AWS_INSTANCE_ID=""
AWS_REGION="us-west-2"

LANG="en_US.UTF-8"
START_TIME="9:45pm"
STOP_TIME="10:45pm"
TIMEZONE="America/Denver"

Run the following to create the Herkou Environment Variables from your .env file.

$ heroku plugins:install git://github.com/ddollar/heroku-config.git
$ heroku config:push

Heroku Scheduler

Add and configure Heroku Scheduler add-on standard (free add-on).

$ heroku addons:add scheduler:standard
$ heroku addons:open scheduler

In the Scheduler Dashboard add a new Scheduler.

TASK	DYNO SIZE	FREQUENCY
bin/amazon_start_stop	1x	Every 10 minutes

Manual execution

In production.

$ heroku run bundle exec ruby bin/amazon_start_stop
# to check the script output
$ heroku logs

In development.

$ foreman start

austra / amazon_start_stop