Terraform 100: Introduction & Install

What is Terraform?

Terraform is a tool for building, changing, and versioning infrastructure safely and efficiently. Terraform can manage existing and popular service providers as well as custom in-house solutions.

The key features of Terraform are:

• Infrastructure as Code
• Execution Plans
• Resource Graph
• Change Automation

tfenv

tfenv: Terraform version manager

tfenv github

• install tfenv

  Install via Homebrew
  $ brew install tfenv

• usage

  $ tfenv install 0.7.0
  $ tfenv install latest

# use a specific version
$ tfenv use 0.7.0
$ tfenv use latest

#uninstall
$ tfenv uninstall 0.7.0
$ tfenv uninstall latest

.terraform-version

If you put .terraform-version file on your project root, or in your home directory, tfenv detects it and use the version written in it.

I have installed two different version on my mac.

Ihen I set version to v0.12.4 in .terraform-version file

➜   terraform --version
Terraform v0.12.4
+ provider.aws v2.25.0
+ provider.random v2.2.0
+ provider.template v2.1.2

Then I change the verson to v0.12.5 in .terraform-version file

➜   terraform --version
Terraform v0.12.5
+ provider.aws v2.25.0
+ provider.random v2.2.0
+ provider.template v2.1.2

Your version of Terraform is out of date! The latest version
is 0.12.7. You can update by downloading from www.terraform.io/downloads.html

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