Use T2 Instances

This is documentation for AWS T2 instances. This new generation, low-cost EC2 instance type provides a baseline level of CPU performance with the ability to burst above the baseline.

T2 instances must be launched into an Amazon Virtual Private Cloud (VPC); they are not supported on the EC2-Classic platform. Amazon VPC enables you to launch AWS resources into a virtual private network.

Note: You cannot change the instance type of an existing EC2 instance to a T2 instance type.

General Purpose (T2)

The HVM instance types, available in all AWS regions, are:

• Micro
• Small
• Medium
• Large

Get started with T2 instances on Engine Yard

This document describes how to use the T2 instances on Engine Yard.

• Prerequisites
• Configure T2 instances
• Verify T2 instances
• FAQs
• Troubleshooting
• More information

Prerequisites

• This article assumes you already have an Engine Yard account. If not, see Sign up for an Engine Yard Account.
• You must be on at least the September 24th, 2014 Engine Yard Gentoo 12.11 stack release to gain T2 instances support.
• You must add a new instance to use this feature. You cannot modify an existing instance / volume.
• You must have a VPC-enabled account. If you have had an Engine Yard account for a while, you might need to create a custom VPC in order to use T2 instances.
• If a customer does not have a new account, sign up a new account via https://cloud.engineyard.com/accounts/new

Configure T2 instances

You can configure T2 instances when you add new instances to a new or existing environment.

Note: We recommend testing in a staging environment before applying changes in a production environment.

To add a new T2 instance

1. Ensure that you meet all the prerequisites above.

2. Add an instance in the usual way.

   See the database docs for more information about adding a database instance to an environment.

3. Select the appropriate General Purpose T2 instance size.

4. Click Add to Cluster (or Boot This Configuration, if you are re-booting an existing environment).

   See the related documentation for more information on adding instances to your environment.

   Note: If you are adding a T2 database instance, you also need to click Apply to update the database.yml file.

Verify T2 instances

Note: When you are testing in staging, consider the differences between your test and production loads.

To verify T2 instances

1. Ensure that instance provisioning worked and the instance is running.

   In general, that is enough of an indication that the T2 instance is working fine.

2. Review the Troubleshooting tips below for more information.
3. If this is a staging environment and you are finished with testing, be sure and stop any T2 instances to avoid unnecessary charges.
4. Stop any unneeded T2 instances to avoid unnecessary charges.

FAQs

You might have these questions about T2 instances.

How much does it cost?

See the pricing page for details.

Question about size?

The storage type for T2 is EBS only.

Troubleshooting

This table contains troubleshooting tips related to T2 instances.

More information

This table provides other resources related to T2 instances.

If you have feedback or questions about this page, add a comment below. If you need help, submit a ticket with Engine Yard Support.