How to connect to Amazon EC2 instance #

1. Using Session Manager via AWS console
2. Using SSH command, key SSH is needed to secure authentication
3. Using IAM policies that control SSH access to instances

How to Increase Specs of Amazon EC2 #

1. Stop the instance first (after instance stopped, both IP and and DNS gone)
2. Select instance > Actions > Instance Settings
   • Change auto recovery behavior: changing how instance auto-recovery
   • Change instance type: change or upgrade instance type
   • Change CPU options: change the current CPU spec
   • Edit user data: modify current user data
3. Start again the instance