Terraform Input Variables using terraform.tfvars

Step-01: Introduction

• Provide Input Variables using terraform.tfvars files

Step-02: Assign Input Variables from terraform.tfvars

• Create a file named terraform.tfvars and define variables
• If the file name is terraform.tfvars, terraform will auto-load the variables present in this file by overriding the default values in c2-variables.tf

  business_unit = "it"
  environment = "stg"
  resoure_group_name = "rg-tfvars"
  resoure_group_location = "eastus2"
  virtual_network_name = "vnet-tfvars"
  subnet_name = "subnet-tfvars"
  

Step-03: Execute Terraform Commands

# Initialize Terraform
terraform init

# Validate Terraform configuration files
terraform validate

# Format Terraform configuration files
terraform fmt

# Review the terraform plan
terraform plan

# Create Resources
terraform apply

# Verify Resources
1. Resource Group Name
2. Resource Group Location
3. Virtual Network Name
4. Virtual Network Subnet Name 
5. Compare with names present in  c2-variables.tf to reconfirm it has overrided it and took from terraform.tfvars

Step-04: Clean-Up Files

# Destroy Resources
terraform destroy -auto-approve

# Delete Files
rm -rf .terraform*
rm -rf terraform.tfstate*

References

• Terraform Input Variables

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