Ec2Switcher

Welcome to Ec2Switcher. The purpose of this gem is to avoid you to pay for an AWS EC2 instance that you don't need running all the time.

Just use the gem when you want to switch off/on the instance.

Add this line to your application's Gemfile:

gem 'ec2_switcher'

And then execute:

$ bundle

Or install it yourself as:

$ gem install ec2_switcher

First Method

Add as environment variables:

EC2_AMAZON_REGION = 'your-region-1'

EC2_AMAZON_ACCESS_KEY = 'your-access-key'

EC2_AMAZON_SECRET_ACCESS = 'your-secret-access-key'

Second method

If you have your credentials stored here ~/.aws/credentials create a profile called ec2

And prototype it like this ->

[ec2]
aws_access_key_id = youraccesskey
aws_secret_access_key = yoursecretaccesskey

If your ec2 server is located somewhere else than eu-west-1, please fill up EC2_AMAZON_REGION variable

Make sure you have auto-scaling disabled on your ec2 instance.

Initialize a new switcher with your instance-id switcher = Switcher.new('i-yourid')

Then juste use switcher.auto to turn on your instance if it's down / off if it's up

switcher.running? indicates if the instance is running (instance state is reloaded automatically) switcher.on truns on the instance switcher.off turns off the instance switcher.reload reloads state of instance (example: The instance could have changed informations, so don't forget to reload to get fresh infos)

You can also use any ec2-instance command you want by using switcher.ec2 variable. Usable methods are here -> http://docs.aws.amazon.com/sdkforruby/api/Aws/EC2/Instance.html

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/Kokiwi/ec2_switcher.

The gem is available as open source under the terms of the MIT License.