AWS Classroomnotes 09/Aug/2023

Cloudformation contd

• Architecture to be realized
  
• Create a vpc
  • Manual steps: refer classroom video
• Add subnets to existing vpc

Cloudformation

• Setup Visual studio code
  • Create an empty folder called ntier and open this in visual studio
  • Ensure the cloudformation extension is installed
    
• Refer Here for cloudformation anatomy
• since we need to create vpc
  
• Refer Here for the template created.
• Now lets deploy the template from AWS Console in Cloudformation service
  
  
  
• Note: By default cloudformation will create all the resources and if any error occurs it doesn’t create anything
• Refer Here for the changes added to create subnets and now update the cloudformation stack
  
• Reference function in aws cloudformation allows us to dynamically get information from other resources created in template Refer Here
• Refer Here for the usage of reference function
• Exercise:
  • Create a vpc with name tag primary and 6 subnets
    • web1:
      • az: ap-south-1a
      • cidr: 10.10.0.0/24
    • web2
      • az: ap-south-1b
      • cidr: 10.10.1.0/24
    • app1
      • az: ap-south-1a
      • cidr: 10.10.2.0/24
    • app2
      • az: ap-south-1b
      • cidr: 10.10.3.0/24
    • db1
      • az: ap-south-1a
      • cidr: 10.10.4.0/24
    • db2
      • az: ap-south-1b
      • cidr: 10.10.5.0/24