AWS Classroom notes 17/Nov/2023

AWS EC2

Activity for userdata understanding

• Create an ubuntu instance with ssh (22) and http (80) open
• ssh into instance

sudo apt update
sudo apt install nginx -y

• Navigate http://<public-ip>
• To execute certain commands immedietly after ec2 instance creation we have user data/custom data
• Navigate to advanced details
  
  
  
  
  

AWS EC2 instance status checks

• overview: Refer Here
  
• System Status Checks
• Instance Status Checks

AWS EC2 instances – Default Monitoring

• AWS offers basic monitoring capabilities on all ec2 instances without any extra cost
  
  
  
• With these basic metrics we can view information
  • cpu
  • disk
  • network
• Possible usecases
  • We need to restart the machine if the cpu utilization is > 90% for last 10 minutes
  • Every day at 10:00 AM start the ec2 instance and 7 pm stop the ec2 instance
• To acheive these we need to understand
  • Cloudwatch
    • Alarm
    • Simple Notification Service