Launching an AWS instance from an EBS snapshot
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Launching the instance from the snapshot is an easy process. You can create a snapshots everyday as the part of your backup process. It is possible that one day you might want to restore your instance from the snapshot incase of a corrupted Operating System or you want to revert back from an unwanted change.
The process involves following steps:
- Create a snapshot of the root volume
- Create AMI from the snapshot
- Launch an instance from the AMI
Let us see how to lunch an instance from the snapshot.
- From the EC2 console select the root volume of the instance and create a snapshot of it.
2. Create an AMI, from the snapshot created from the previous step.
3. Make sure that the virtualization type is “Hardware-assisted Virtualization”.
4. Now select the AMI you created from the above step and click launch. I have not included the steps to launch the instance here.
5. Now you can test if an instance is successfully launched.
Conclusion
Snapshot is an important part of your backup process. You would want to have the instance back in the event of the operating system crash or misconfigurations. Administrators do daily backup in the form of a snapshot. Now we know how an AMI can be launched from the snapshot in the case of operating system failure.
