This tutorial shows how to install Terraform on the Linux machine (CentOS 8). CentOS 8 uses DNF (Dandified yum) as a package manager.
Check OS
cat /etc/redhat-release
Switch User to super user
sudo su
Update the System
dnf check-update
dnf upgrade -y
Add Hashicorp Repository
dnf config-manager --add-repo=https://rpm.releases.hashicorp.com/RHEL/hashicorp.repo
dnf repolist
Install Terraform
dnf install terraform -y
exit
Verify the Installation
terraform -help
Enable Tab Completion
touch ~/.bashrc
terraform -install-autocomplete
Tutorial
Launch the nginx docker image using Terraform. You need to install Docker.
Write the Terraform script
mkdir terraform-test
cd terraform-test
vi main.tf
terraform {
required_providers {
docker = {
source = "kreuzwerker/docker"
version = "~> 2.23.1"
}
}
}
provider "docker" {}
resource "docker_image" "nginx" {
name = "nginx:latest"
keep_locally = false
}
resource "docker_container" "nginx" {
image = docker_image.nginx.image_id
name = "test"
ports {
internal = 80
external = 8080
}
}
Initialize and Provision
terraform init
terraform apply
docker container ls
Open the web browser and access http://{host-ip}:8080. You can see the nginx home page.
Scriptorium 