Amazon EC2 instance only providing public DNS name, If you reboot existing instance box the public DNS name will change, using Elastic IP we can solve this problem DNS problem it’s static.
STEP – 1
Click on VPC under Compute & Networking menu,
Click on Elastic IP on left menu
Clicking on Allocate New Address, amazon will provide you dedicated IP address.
STEP – 4
Amazon generated an IP address, now map IP address to Instance box (Eg:placmentprofession). While clicking on Associate Address button.