Update kernel Amazon EC2 is not the easy way and sometimes leads to worse your instance by not connecting to your system. I have faced and as fast as I can, I have shared the problem with you. I work with gentoo.

DISCLAIMER: DO AT YOUR OWN RISK.

Update Kernel Amazon EC2

This process has been described in EC2 Official Page: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/UserProvidedKernels.html