Video 1-1: Terraform Installation On Rocky Linux 10
Terraform is an open-source infrastructure as code (IaC) tool developed by HashiCorp. It allows users to define and provision data center infrastructure using a declarative configuration language, either HashiCorp Configuration Language (HCL) or JSON.
Key aspects of Terraform:
Infrastructure as Code (IaC):
Terraform enables the management and provisioning of infrastructure through code, rather than manual processes. This allows for version control, automation, and consistent deployments.
Declarative Configuration:
Users define the desired end state of their infrastructure (e.g., specific virtual machines, networks, databases). Terraform then determines the necessary steps to achieve that state, rather than requiring users to specify each individual action.
Multi-Cloud and On-Premises Support:
Terraform can manage resources across various cloud providers (e.g., AWS, Azure, Google Cloud) and on-premises environments, providing a unified approach to infrastructure management.
Resource Provisioning:
It interacts with various platform APIs to create, modify, and destroy infrastructure resources based on the defined configurations.
State Management:
Terraform maintains a state file (by default, terraform.tfstate) that tracks the real-world resources managed by Terraform, allowing it to understand the current infrastructure and plan changes accurately.
Workflow:
The core Terraform workflow involves:
Init: Prepares the working directory for Terraform operations.
Plan: Generates an execution plan showing what changes Terraform will make to achieve the desired state.
Apply: Executes the plan, provisioning or modifying the infrastructure.
Destroy: Deletes the infrastructure managed by the configuration.