Is there any way to recover your AWS insyance, if you lost your key_pair?
Hardly not! because aws provide the key_pair only once.Here is one tip for recovering your AWS instance with a new set of key_pair.
Step1:Create a new AWS instance with the same instance type as the old one and save the new keu_pair(New instance would be in the same availability zone as the old one)
Step2:Stop the old instance and detach the root volume from the old one.
Step3:Attach the old instance root disk to new one