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
