AWS Classroomnotes 28/Apr/2022

Status Checks on EC2 instances

• Types of Status Checks
  • System Status Checks
  • Instance Status Checks
    
• System Status checks:
  • This monitors AWS systems on which instance runs
  • These checks detect underlying problesm with your instance that requires AWS involvement to repair.
  • When this check fails
    • You can report to AWS
    • You can stop and start the ec2 instance (which resolves the issue in many cases)
      
• Instance status Checks:
  • These checks monitor the software and network configuration on your instance.
  • EC2 checks the health of instance by sending ARP request to the Network Interface.

Troubleshooting when ec2 has issues

• Following are starting areas
  
  
  
• For boot or network issues we can connect using serial console
  

Creating your own key pair

• Importing key pair
  
• Create a new keypair by executing ssh-keygen on your terminal
• Now import the id_rsa.pub into aws
  
  

Next Steps

• What are AMIs?
• How to create them.