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Amazon to retire iconic EC2-Classic network

Customers will have until 2022 to migrate from the 15-year-old network to VPC

AWS has announced that it’s retiring its Elastic Compute Cloud (EC2) Classic network after 15 years in operation, with customers given until 2022 to migrate their services to its successor.

EC2-Classic, widely considered a foundational cloud computing technology, was launched in 2006 as a virtual computing environment that organisations could use to host scalable applications. These ‘instances’ provided layers of security, different hardware configurations, as well as pre-configured templates.

This technology was eclipsed with the launch of AWS' Virtual Private Cloud (VPC) platform in 2009, which serve as virtual networks of isolated EC2 instances. It was again followed by the launch of Virtual Private Clouds for Everyone in 2013.

AWS has now decided to retire EC2-Classic, giving customers two years to complete all migrations away from the older technology and towards VPC.

“EC2-Classic has served us well, but we’re going to give it a gold watch and a well-deserved sendoff,” said chief evangelist for AWS, Jeff Barr, in an in-depth blog post.

“We are not planning to disrupt any workloads and we are giving you plenty of lead time so that you can plan, test, and perform your migration. In addition to this blog post, we have tools, documentation, and people that are all designed to help.”

When is AWS retiring EC2-Classic?

AWS has begun notifying all current EC2-Classic customers through their account teams, and will soon begin issuing notices in the Personal Health Dashboard.

From 30 October 2021, AWS will disable EC2-Classic in Regions for AWS accounts that have no active EC2-Classic resources in the Region. The firm will also stop selling one-year and three-year Reserved Instances for EC2-Classic.

Then, from 15 August 2022, AWS expects all migrations to be complete, with no remaining EC2-Classic resources present in any AWS account.

All AWS accounts created after 4 December 2013 were already VPC-only, unless EC2-Classic was enabled as a result of a support request, meaning the change is likely only to affect longstanding AWS customers.

How to migrate from EC2-Classic to VPC

Although AWS will notify customers they will need to migrate, there are several steps that businesses running EC2-Classic instances will need to take. To prepare, ahead of any migration, the firm has put together guidance available on the AWS site.

To fully migrate, customers need to find, examine, and migrate several resources. These comprise running or stopped EC2 instances, running or stopped RDS database instances, Elastic IP addresses, Classic Load Balances, Redshift clusters, Elastic Beanstalk environments, EMR clusters, AWS Data Pipelines, ElastiCache clusters, Reserved Instances, Spot Requests, and Capacity Reservations.

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Customers may also need to create, or recreate if deleted, the default VPC for their account. In some cases, they’ll need to be able to modify the existing resources, but in other cases, customers will need to create new and equivalent resources in VPC.

The task may seem daunting, but AWS has launched the EC2 Classic Resource Finder script so customers can find all EC2-Classic resources in their accounts. This can either be run directly in a single AWS account or can be used against all accounts within an organisation.

Customers, at this stage, can use a variety of migration tools that AWS has developed including AWS Application Migration Service, Support Automation Workflow, IP Address Migration, and Class Load Balancers.

Comprehensive support is available through Barr’s post hosted on the AWS site, including a more in-depth overview of each of these migration tools, as well as guidance for updating instance types as businesses move from EC2-Classic to VPC.

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