AWS Compute – EC2

EC2 lifecycle – states

• States
  
• On-demand ec2 instances will be charged only when they are in running state
• Note: EBS volume pricing will continue as long as it exists

EC2 instances – Approach to create

• overview
  
• Lets create the following security groups
  • openssh
  • openicmp
  • openrdp
  • openhttp
• Create an ec2 instance with only openicmp
• when we tried to connect the ssh didn’t work but ping worked
• Lets explore Networking section
  
  
  
  
• Add openssh to security groups for ec2 i.e. attach security groups to elastic network interface
  
  
• Lets go back to network section and record private and public ip
  
• Now lets stop the instance and start the instance back and relook at networking
  
  

Create an ec2 instance with fixed public ip (Elastic Ip Address)

• Create an elastic ip
• Create an ec2 instance without public ip
• After the ec2 instance is created
  • Associate elastic ip with network interface
• Now as long as elastic ip is associated with the network interface the public ip is allocated to it irrespective of state.

Exercise

• Create an ec2 instance in az-a
• create a network interface in az-a
• dont create a public ip for this
• attach network interface to ec2 instance and you should see two private ips
• I want a bill for a non free tier ec2 instance with size t2.micro in mumbai region with 10 GB disk used for 300 hours in a month