Terraform configuration files are declarative, meaning that they describe the end state of your infrastructure. Terraform uses the state file to determine the changes to make to your infrastructure so that it will match your configuration. It also keeps track of your real infrastructure in a state file, which acts as a source of truth for your environment. Terraform generates a plan and prompts you for your approval before modifying your infrastructure. Terraform takes an immutable approach to infrastructure, reducing the complexity of upgrading or modifying your services and infrastructure. Manage any infrastructureįind providers for many of the platforms and services you already use in the Terraform Registry. HashiCorp co-founder and CTO Armon Dadgar explains how Terraform solves infrastructure challenges. For example, if you update the properties of a VPC and change the number of virtual machines in that VPC, Terraform will recreate the VPC before scaling the virtual machines. Apply: On approval, Terraform performs the proposed operations in the correct order, respecting any resource dependencies.Plan: Terraform creates an execution plan describing the infrastructure it will create, update, or destroy based on the existing infrastructure and your configuration.For example, you might create a configuration to deploy an application on virtual machines in a Virtual Private Cloud (VPC) network with security groups and a load balancer. Write: You define resources, which may be across multiple cloud providers and services.The core Terraform workflow consists of three stages: You can find all publicly available providers on the Terraform Registry, including Amazon Web Services (AWS), Azure, Google Cloud Platform (GCP), Kubernetes, Helm, GitHub, Splunk, DataDog, and many more. HashiCorp and the Terraform community have already written thousands of providers to manage many different types of resources and services. Providers enable Terraform to work with virtually any platform or service with an accessible API. Terraform creates and manages resources on cloud platforms and other services through their application programming interfaces (APIs). Hands On: Try the Get Started tutorials to start managing infrastructure on popular cloud providers: Amazon Web Services, Azure, Google Cloud Platform, Oracle Cloud Infrastructure, and Docker. Terraform can manage low-level components like compute, storage, and networking resources, as well as high-level components like DNS entries and SaaS features. You can then use a consistent workflow to provision and manage all of your infrastructure throughout its lifecycle. HashiCorp Terraform is an infrastructure as code tool that lets you define both cloud and on-prem resources in human-readable configuration files that you can version, reuse, and share.
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