AWS Classroomnotes 18/Mar/2023

Compute – Workshop

• Areas of Focus
  • Automation
  • Administration

Activity 1: Shutdown all instances which have tag Env=QA

• Setup: Create 3 ec2 instances of free tier and provide tags
  • Machine 1: Env: QA
  • Machine 2: Env: Dev
  • Machine 3: Env: UAT
• Refer Here for the cli with script
• Improvement 1: This script was failing if there are no instances matching critiera, so we add a flag or condition Refer Here for changes.
• Improvement 2: Make this script work for tag Env=Dev Refer Here for the imporvement where user can now call activity1.sh <tag-name> <tag-value>

Activity 2: Resize the EC2 instance from t2.micro to t2.nano based on tags

• Refer Here for the changes.

Activity 3: EC2 Systems Manager

• Systems Manager can be used to control linux or window workloads in
  • AWS
  • Other Cloud Providers
  • On-premises
  • IOT
    
• General Setup of Systems Manager Refer Here and Refer Here for setup on ec2 instances

Setting up Systems Manager

• Refer Here for pre-requisites
• Navigate to Systems Manager
  
  
  
  
  
  
  
• Now Create an Instance Profile Refer Here
• Refer Here to attach IAM role to existing ec2 instance
• AWS Recommends using Configure Default Host Management
  • Navigate to systems Manager -> Fleet Manager ->
    
    
• Now we can recover from key lost scenarios Refer Here