DevOps Classroomnotes 31/Jul/2023

Terraform contd

ntier network in Azure

• Manual steps:
  • Create a resource group
  • Create a vnet Refer Here for screenshots
  • network: 10.10.0.0/16
    • subnets:
      • web: 10.10.0.0/24
      • app: 10.10.1.0/24
      • db: 10.10.2.0/24
        
• Terraform implementation:
  • Refer Here for basic strucuture and terraform constraints added
  • Refer Here for resource definitions done
    
  • Refer Here for the variables added
  • To pass input variables we have two options
  • option 1: from cli directly using -var terraform apply -var 'resource_group_name=ntier-dev' -var 'location=eastus'
  • option 2: create a file with variable values Refer Here. Refer Here for the changes to accomodate ntier with tfvars

Terraform concepts

• Terraform block: Refer Here.
  • Terraform block can help in setting provider requirements Refer Here as well as terraform requirements Refer Here.
  • There are other areas as well, which we will be discussing in later parts fo course
• Version constraints: Refer Here
• Data types: Refer Here
• Terraform input variables Refer Here