Terraform Azurerm provider Project.

Introduction

This repo contains my Terraform infrastucture as code that you can use to build multiple VM's, a load balancer with a custom Linux / Ubuntu image

Getting Started

To get started you will need the following.

• An Azure subscription Azure free sub
• A computer with Linux, Windows or Mac.
• A text editor such as Vscode Vscode
• Lots of coffee.

Dependencies

In order to use this code you will need the following

• Terraform Terraform latest version.
• The Azurerm provider (Instructions how to install on right corner)
• Azure CLI Azurecli latest version
• Packer, to creat images Packer latest version
• A git client (to clone the repo) git client

Instructions

1. Clone this repo by typing "git clone https://github.com/Danxx26hub/iacCourseassign.git"

2. You will have a folder called iacCourseassign, cd into the this folder.

3. find the Packer json file and enter your credentials for Azure.

4. You will need to create a "Service Principal" account

5. You can find those using the Azure portal or the Azure CLI.

   1. to create SPN account do the following in the az cli.
   2. Create an Azure Resource Group : az group create -n resourceGroup --tags Environment = Production -l region
   3. you will need the following:
      1. the clientd ID
      2. client secret
      3. subscription ID
   4. run this az cli command: az ad sp create-for-rbac --query "{ client_id: appId, client_secret: password, tenant_id: tenant }"
   5. Then get subscription ID by running the following command: az account show --query "{ subscription_id: id }"
   6. Be sure to safeguard these id's and not share them with anyone.
   7. edit your "server.json" file and enter the three required id's

6. Initialize Packer by typing "Packer init .", rename the .json file to "server.json".

7. Run "Packer build -var 'resources=yourResource' server.json" this will build the image (Note you will need to use the -var switch, this allows you to set what resource group to put the image )

8. Once the image is built and stored in Azure you will see the following:

9. Type "Terraform init" to initialize your environment.

10. Type "Terraform plan -out soution.plan".

    1. You can modify any of the variables in the variables.tf file to add or modify use the terraform "variable" block.

       1. Notice that variables that are defined in the variables.tf file can be called in the main.tf file by using "var.machines" for example.
       2. You can create your own variables and then call them in the main file.
       3. Notice that I used a conditional in the variable file to restrict from 2 to 5 machines. you can change that.

    2. The default variables will ask you to pick between 2 and 5 VM's, I used Terraform validation to ensure this stays between that range and will fail if not.

    3. you will be asked to enter a password for the machines (not great security), but this is just an example. You can also do ssh public key encryption.

    4. You will be asked to enter a resource group prefix BE SURE TO use the same as you used in the Packer .json file.

11. This will do a "dry run" of the build process.

    1. you will be presented with any changes that terraform will be making.
    2. any addtions will have "+" symbols and changes or deletions will have "-" symbols

    

12. Once you are satisfied with the output type "Terraform apply project.out", this will build the number of VM's of your choice, the Load Balancer and the Network Security group.

13. Login to your Azure account and get your static IP, Enjoy.

Output

You will have something like the image below in the Topology section of the Azure Portal, in my example I picked 3 VM's.

Tag Policy Screenshot

• Policy prevents resources from buing deployed wihtout tags.