This class is the starting point for working with Auto Scaling.

To use Auto Scaling you must first sign up here.

For more information about Auto Scaling:

• Auto Scaling
• Auto Scaling Documentation

Credentials

You can setup default credentials for all AWS services via AWS.config:

  AWS.config(
    :access_key_id => 'YOUR_ACCESS_KEY_ID',
    :secret_access_key => 'YOUR_SECRET_ACCESS_KEY')

Or you can set them directly on the AWS::AutoSclaing interface:

  auto_scaling = AWS::AutoScaling.new(
    :access_key_id => 'YOUR_ACCESS_KEY_ID',
    :secret_access_key => 'YOUR_SECRET_ACCESS_KEY')

Launch Configurations

You need to create a launch configuration before you can create an Auto Scaling Group.

  # needs a name, image id, and instance type
  launch_config = auto_scaling.launch_configurations.create(
    'launch-config-name', 'ami-12345', 'm1-small')

If you have previously created a launch configuration you can reference using the {LaunchConfigurationCollection}.

  launch_config = auto_scaling.launch_configurations['launch-config-name']

Auto Scaling Groups

Given a launch configuration, you can now create an Auto Scaling {Group}.

  group = auto_scaling.groups.create('group-name',
    :launch_configuration => launch_config,
    :availability_zones => %(us-east-1a us-east-1b),
    :min_size => 1,
    :max_size => 4)