Terraform + GCP

Terraform offers a simple, easy-to-learn language with cloud providers for infrastructure across platforms, and it runs no agents in VMs; use it for infrastructure, not software configuration (pair with Ansible).

Learn how Terraform enables cross-cloud infrastructure across Azure and GCP with one language, reducing complexity compared to native tools like CloudFormation or Deployment Manager, and providing a simple, holistic approach.

Terraform enables idempotent resource creation on GCP, avoiding duplicates when re-running. Using API or CLI can cause errors or require extra scripting.

Install Terraform on Linux, Windows, or macOS by following the setup link provided in the description for your operating system.

Explore root modules in Terraform, where modules group resources in a folder containing your code. Focus on the main.tf file, which defines configuration variables, with outputs and commands introduced later.

Explore the three core terraform commands—init, plan, and apply—and see how provider configuration and a VPC network resource are defined, dependencies downloaded, and resources created in GCP.

Explore four ways to connect Terraform to GCP: locally with user credentials; on a GCP VM with a service account; using service account keys; or impersonating a service account.

Connect your Terraform workflow to Google Cloud using the Google CLI and application default credentials or a user account, while noting that production should use a service account.

Connect Terraform to GCP by using a service account on a Google VM, install Terraform, and apply configurations to create a VPC without relying on user credentials.

Learn how to connect Google Cloud Platform with Terraform using service account credentials, enabling Terraform runs outside GCP and creating resources via a service account.

Learn how to use impersonating service accounts in Terraform to create short-term credentials, configure a main service account and a delegator, grant permissions, and provision resources like a VPC.

Learn to use terraform destroy to remove resources, such as a VPC network, from your project. Clean up testing environments by always running terraform destroy after you finish configuring resources.

Explore the Heshy configuration language (FCL) by examining arguments and blocks, with identifiers and expressions, and common Terraform blocks like provider, variable, resource, data, and output.

Demonstrates how to use the Terraform fmt command to enforce proper syntax, fix quote usage, and validate Terraform expressions for reliable configurations.

Explore variables, local blocks, and output blocks in Terraform, mapping input variables to function arguments, local values to temporary scope, and outputs to function return values.

Explore the terraform variable block, including defaults, types (string, number, boolean, collection and structural), descriptions, validation, and sensitive flags. Learn defining variables and assigning values via command or tfvars.

Declare and assign string, local, and boolean variables in Terraform, then display their outputs with the output block, demonstrating value initialization from DFS.

Explore Terraform collection types by creating a list of strings and maps, assigning values, and exposing outputs, then compare lists and sets: lists support indexing, while sets do not.

Learn how to define and use maps in Terraform, starting with a string-valued map and exploring the any type to accommodate strings, booleans, and numbers as object-like key-value pairs.

Learn how to create an object in Terraform, define its schema with keys like block and region, and build a map of these objects to manage complex configurations.

Declare and initialize a local variable in the main method with a value of 100. Output the local variable and remember its scope is limited to the main method.

Configure the terraform provider for GCP, set project, region, and zone, then run terraform init to download the provider and deploy resources in the selected cloud environment.

Get more information about your provider through a key link that contains the code to use your provider, plus reference material and full documentation in the resource section.

Explore how resource blocks in Terraform define infrastructure objects like a GCP VPC network and virtual machines. Learn how resource types, arguments, and apply convert configurations into real cloud resources.

Create a basic gcp vpc network with google compute network, explore auto subnet mode and custom subnet options, and retrieve outputs like id, self link, and gateway ip.

Create a custom VPC network in GCP with two subnets in different regions using for_each, configuring region, IP range, and firewall rule for TCP 22 ingress.

The state file records all resources and outputs after a Terraform apply, such as the VPC network; backups preserve previous configurations and deleting them loses track of resources.

Learn how to use Terraform data blocks to fetch existing Google compute network details and its subnets, enabling cross-reference of previously created infrastructure in GCP.

Configure aliased providers, fetch a VPC via a data block, and create a europe-based Google compute instance using a Debian image and a subnet, then destroy when done.