How to change AWS Linux AMI2 hostname

As a best practice, it is recommended to change the system hostname according to project infrastructure inventory. User-friendly hostname provides us ability to quickly identify the system components of the project easily.

Login to the system with ec2-user

sudo hostnamectl set-hostname aws-mgmt

Successfully updated hostname

[ec2-user@aws-mgmt ~]$

Reference: 

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/set-hostname.html