Download Amazon Elastic Compute Cloud User Guide for Linux

Amazon Elastic Compute Cloud User Guide for Linux
Migrating from EC2-Classic to a VPC
Note
If you've defined a rule in your EC2-Classic security group that references another security
group, you will not be able to use the same rule in your VPC security group. Modify the rule
to reference a security group in the same VPC.
6.
Choose Create.
Step 3: Create an AMI from Your EC2-Classic Instance
An AMI is a template for launching your instance. You can create your own AMI based on an existing
EC2-Classic instance, then use that AMI to launch instances into your VPC.
The method you use to create your AMI depends on the root device type of your instance, and the
operating system platform on which your instance runs. To find out the root device type of your instance,
go to the Instances page, select your instance, and look at the information in the Root device type field
in the Description tab. If the value is ebs, then your instance is EBS-backed. If the value is
instance-store, then your instance is instance store-backed.You can also use the describe-instances
AWS CLI command to find out the root device type.
The following table provides options for you to create your AMI based on the root device type of your
instance, and the software platform.
Important
Some instance types support both PV and HVM virtualization, while others support only one or
the other. If you plan to use your AMI to launch a different instance type than your current instance
type, check that the instance type supports the type of virtualization that your AMI offers. If your
AMI supports PV virtualization, and you want to use an instance type that supports HVM
virtualization, you may have to reinstall your software on a base HVM AMI. For more information
about PV and HVM virtualization, see Linux AMI Virtualization Types (p. 59).
Instance Root Device
Type
Action
EBS
Create an EBS-backed AMI from your instance. For more information, see
Creating an Amazon EBS-Backed Linux AMI (p. 76).
Instance store
Create an instance store-backed AMI from your instance using the AMI tools.
For more information, see Creating an Instance Store-Backed Linux
AMI (p. 79).
Instance store
Transfer your instance data to an EBS volume, then take a snapshot of the
volume, and create an AMI from the snapshot. For more information, see
Converting your Instance Store-Backed AMI to an Amazon EBS-Backed
AMI (p. 85).
Note
This method converts an instance store-backed instance to an EBSbacked instance.
(Optional) Store Your Data on Amazon EBS Volumes
You can create an Amazon EBS volume and use it to back up and store the data on your instance—like
you would use a physical hard drive. Amazon EBS volumes can be attached and detached from any
instance in the same Availability Zone. You can detach a volume from your instance in EC2-Classic, and
attach it to a new instance that you launch into your VPC in the same Availability Zone.
For more information about Amazon EBS volumes, see the following topics:
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