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Computing

Create an EC2 Instance from a Snapshot

A Use Case for this is when you have a dedicated instance that you’d like to reuse for another purpose.

There is a quicker way to clone an instance when using on-demand instances. That is by creating and using an AMI.

  • Prior to Setup
    • Determine the Availability Zone you want to use.
    • Note the Security Group of the existing EC2 instance.
  • Create a Snapshot from the instance you wish to clone.
    • On the EC2 Dashboard, navigate to Elastic Block Store >> Volumes.
    • Identify the Instance you wish to clone in the Attachment Information column.
    • Actions >> Create Snapshot
  • Create a Volume from the Snapshot.
    • On the EC2 Dashboard, navigate to Elastic Block Store >> Snapshots.
    • Identify the Snapshot from which you wish to create a Volume.
    • Actions >> Create Volume
    • IMPORTANT!: Choose the desired Availability Zone.
    • Note the Volume Id.
  • Create an EC2 Instance in the desired Availability Zone.
    • Choose the same Security Group as the modeled instance.
    • Follow the steps in the Wizard.
    • Once the Instance has started, stop the instance.
  • Force Detach the existing Volume from the Instance.
    • On the EC2 Dashboard, navigate to Elastic Block Store >> Volumes.
    • Actions >> Force Detach
    • Optional but recommended. Actions >> Delete
  • Attach the cloned Volume.
    • On the EC2 Dashboard, navigate to Elastic Block Store >> Volumes.
    • Actions >> Attach
    • Choose the desired instance and specify the Device.
  • Start the EC2 Instance.
    • On the EC2 Dashboard, navigate to Instances >>Instances.
    • Actions >> Instance State >> Start

Screen Shot 2018-09-15 at 7.03.20 AM

Feature Photo by Robin Spielmann on Unsplash

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