Let's quickly go through some important concepts related to Amazon EC2:
- We can attach an Elastic IP address to our EC2 instance so that the IP address does not change when we stop and start our EC2 instances. An alternative is to register a DNS name to our public IP and change it when our IP changes. Elastic IP is free as long as it is associated with a running instance. There is also a limit of five Elastic IPs for an account, which can be increased by requesting AWS.
- We can use the EC2 placement groups cluster to have all EC2 instances provisioned within the same rack and availability zone (AZ). The instances within the placement group get up to 10 Gbps bandwidth between them. However, a failure to the rack or AZ will ...