AWS Classroom Series – 26/Jul/2021

CloudFormation continued

• Adding ec2 instance to the template

• Refer Here for the changeset containing ec2 instance in web1 and app1 subnets

• Todo:

  • The VPC Which we have created doesnot have internet access, we need to create it
  • EC2 instance in the app subnet doesn’t require public ip address and ec2 instance in the web subnet should have a public ip address
  • We need to handle the ami id so that depending on the region where the template is executed ami id is automatically picked.

• Solution for todo’s

  • Internet access to the VPC
    • For this we need to create an internet gateway and attach it to vpc
    • We need to create a public route table and private route table
  • For public ip address we need to fill the extrasections i.e. Network Interfaces in the ec2 resource
  • For handling automatic picking up of ami id based on region we need to explore the mappings section in cloud formation

• Sample Templates

  • By Service Refer Here
  • Template Snippets Refer Here
  • By region Refer Here
  • By Application frameworks Refer Here