terraform-in20hours

Learning Terraform in 20 Hours

Outcome: Create windows & linux vm, sql instance, and app gateway

Install Terraform in a Docker container

docker build -t terraform .

 docker run -it -v ${PWD}:/work terraform

Authentication to Azure

Option 1: Azure CLI #FACT: Use az account show to see which sub terraform will use.

Option 2: Authenticating using a Service Principal
Initialize Terraform

terraform init

Commands

terrafrom init

terraform plan

terraform apply

terraform destroy

#use for developing without having to create new dir and copy stuff +100
terraform workspace new $(workspaceName) 

#test terraform commands!
terraform console

Variables

.terraform.tfvars

variable "admin_password" {
    type = string
    description = "admin password"
}

manual prompts

terraform apply

terraform -var option

terraform apply -var 'password=<Password>'

terraform variables file

.terraform.tfvars

username = "tfadmin2"

Terraform apply -var

terraform apply -var="admin_password=Password1234!"

Environment Variables

You can populate variables by exporting environment variables TF_VAR_$(variableName)

export TF_VAR_admin_password=Password1234!

resources

https://docs.microsoft.com/en-us/azure/developer/terraform/create-linux-virtual-machine-with-infrastructure

https://phoenixnap.com/kb/how-to-install-terraform-centos-ubuntu

https://stackoverflow.com/questions/41485217/mount-current-directory-as-a-volume-in-docker-on-windows-10

https://stackoverflow.com/questions/40542297/need-to-create-multile-vms-in-azure-through-terraform

influences & books

https://www.terraformupandrunning.com/

https://learn.hashicorp.com/terraform