July 9, 2021 . 1 MIN READ
1)Create AMI image of original instance.
2) Launch new EC2 instance using AMI image (from step 1) with new key pair.
3) Login new EC2 instance with new key.
Cheers!
http://blog.celingest.com/en/2013/11/14/replace-lost-keypair-ec2-instance/
