How can you recover/login to an EC2 instance for which you have lost the key?

Question

Keerthan Simha · Accepted Answer

To recover an EC2 instance with a lost key, detach its root volume, attach it to another instance, and update the authorized_keys file with a new key. Alternatively, use EC2 Instance Connect or SSM Session Manager if configured.

Sakthipriya M S · Answer

You can stop the instance, detach the volume, create a new key-pair. Attach the volume to a temporary instance, replace the keypair in the file-system reattach the root to the original instance and then restart the instance.

How can you recover/login to an EC2 instance for which you have lost the key?

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