Terraform

Variables

• Variables are the inputs that can be passed
• official docs
• basic syntax for creating a variable

variable "<name>" {
    type = <datatypes of terrarform>
    default = ""
    description = "purpose of variable"
}

• To use the variable use syntax var.<name>

Using variables in activity 1

• Refer Here for the changes
• Variable values can be passed during apply

terraform apply -var "<name>=<value>"
terraform apply -var vpc_cidr=10.0.0.0/16

• Variables values can be stored in a file with extension .tfvars and passed during apply. Refer Here for docs

terraform apply -var-file='default.tfvars'

Outputs

• Terraform template outputs show the output after every apply Refer Here for official docs
• Sample output
  

Adding a sample output to activity 1

• Refer Here for changes.
• outputs.tf file contains outputs

How to create multiple resources in terraform

• count
• Refer Here for changes to include count

Terraform functions

• Refer Here for official docs of terraform
• Refer Here for changes.
• Refer Here for the changes done

Activity 2: Create a Network in Azure

• Overview
  
• Manual steps: (Watch classroom recording)
• Terraform azure providers
  • azurerm (Hashicorp) this is most widely used
  • azapi (Microsoft) few customers use this as well
• Refer Here for changes done to create the network as mentioned in the above image