How to install Terraform on Linux

In this tutorial, How to install Terraform on Centos and Ubuntu. Terraform an Open Source tool. It is safely and predictably create, improve and change Infrastructure.

Feature Key

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

Install Terraform on Centos 7

Link download Terraform here. In this tutorial, The current version of Terraform is 0.12.16

$ sudo yum install wget unzip
$ wget https://releases.hashicorp.com/terraform/0.12.16/terraform_0.12.16_linux_amd64.zip
$ sudo unzip ./terraform_0.12.16_linux_amd64.zip -d /usr/local/bin/

Check Terraform has installed on your system

$ terraform -v

The output terraform version as below

[vagrant@DevopsRoles ~]$ terraform -v
Terraform v0.12.16

Install Terraform on Ubuntu 18.04

$ sudo apt-get install wget unzip
$ wget https://releases.hashicorp.com/terraform/0.12.16/terraform_0.12.16_linux_amd64.zip
$ sudo unzip ./terraform_0.12.16_linux_amd64.zip -d /usr/local/bin/

Check Terraform has installed on your system

$ terraform -v

Build an EC2 instance with Terraform

Terraform supports various providers. Example create main.tf file.

$ vi main.tf

# The content as below:
provider "aws" {
    access_key = "ACCESS_KEY"
    secret_key = "SECRET_KEY"
    region = "us-east-2a"
}

Resource settings

The syntax is the resource “resource type” “resource name”.

Details: https://www.terraform.io/docs/providers/aws/index.html

Example like this

[vagrant@DevopsRoles terraform]$ cat main.tf  
 provider "aws" {
     access_key = "ACCESS_KEY"
     secret_key = "SECRET_KEY"
     region = "us-east-2"
 }
 resource "aws_instance" "testEC2" {
     ami = "ami-0c64dd618a49aeee8"
     instance_type = "t2.micro"
     #key_name = "AWS-HUUPV"
     vpc_security_group_ids = [   
        "sg-00c448cd3e48ba684" 
       ] 
     associate_public_ip_address = "true" 
     root_block_device {   
        volume_type = "gp2"   
        volume_size = "20" 
     }
 # EBS
     ebs_block_device {
       device_name = "/dev/sdf"
       volume_type = "gp2"
       volume_size = "10"
     }
     tags = {
         Name = "testEC2"
     }
 }
 output "public_ip_of_testEC2" {
   value = "${aws_instance.testEC2.public_ip}"
 }

Note

ami

Access_key and Secure_key. You click IAM –> Roles

Build on AWS

[vagrant@DevopsRoles terraform]$ terraform init
[vagrant@DevopsRoles terraform]$ terraform plan
[vagrant@DevopsRoles terraform]$ terraform apply

The log console terraform as below

[vagrant@DevopsRoles terraform]$ terraform plan
 Refreshing Terraform state in-memory prior to plan…
 The refreshed state will be used to calculate this plan, but will not be
 persisted to local or remote state storage.
 
 An execution plan has been generated and is shown below.
 Resource actions are indicated with the following symbols:
 create 
 Terraform will perform the following actions:
 # aws_instance.testEC2 will be created
 resource "aws_instance" "testEC2" {
 ami                          = "ami-0c64dd618a49aeee8"
 arn                          = (known after apply)
 associate_public_ip_address  = true
 availability_zone            = (known after apply)
 cpu_core_count               = (known after apply)
 cpu_threads_per_core         = (known after apply)
 get_password_data            = false
 host_id                      = (known after apply)
 id                           = (known after apply)
 instance_state               = (known after apply)
 instance_type                = "t2.micro"
 ipv6_address_count           = (known after apply)
 ipv6_addresses               = (known after apply)
 key_name                     = (known after apply)
 network_interface_id         = (known after apply)
 password_data                = (known after apply)
 placement_group              = (known after apply)
 primary_network_interface_id = (known after apply)
 private_dns                  = (known after apply)
 private_ip                   = (known after apply)
 public_dns                   = (known after apply)
 public_ip                    = (known after apply)
 security_groups              = (known after apply)
 source_dest_check            = true
 subnet_id                    = (known after apply)
 tags                         = {
 "Name" = "testEC2"
 }
 tenancy                      = (known after apply)
 volume_tags                  = (known after apply)
 vpc_security_group_ids       = [
 "sg-00c448cd3e48ba684",
 ]
 ebs_block_device {
 delete_on_termination = true
 device_name           = "/dev/sdf"
 encrypted             = (known after apply)
 iops                  = (known after apply)
 kms_key_id            = (known after apply)
 snapshot_id           = (known after apply)
 volume_id             = (known after apply)
 volume_size           = 10
 volume_type           = "gp2"
 }
 ephemeral_block_device {
 device_name  = (known after apply)
 no_device    = (known after apply)
 virtual_name = (known after apply)
 }
 network_interface {
 delete_on_termination = (known after apply)
 device_index          = (known after apply)
 network_interface_id  = (known after apply)
 }
 root_block_device {
 delete_on_termination = true
 encrypted             = (known after apply)
 iops                  = (known after apply)
 kms_key_id            = (known after apply)
 volume_id             = (known after apply)
 volume_size           = 20
 volume_type           = "gp2"
 }
 } 
 Plan: 1 to add, 0 to change, 0 to destroy.
 
 Note: You didn't specify an "-out" parameter to save this plan, so Terraform
 can't guarantee that exactly these actions will be performed if
 "terraform apply" is subsequently run.
 [vagrant@DevopsRoles terraform]$ terraform apply
 An execution plan has been generated and is shown below.
 Resource actions are indicated with the following symbols:
 create 
 Terraform will perform the following actions:
 # aws_instance.testEC2 will be created
 resource "aws_instance" "testEC2" {
 ami                          = "ami-0c64dd618a49aeee8"
 arn                          = (known after apply)
 associate_public_ip_address  = true
 availability_zone            = (known after apply)
 cpu_core_count               = (known after apply)
 cpu_threads_per_core         = (known after apply)
 get_password_data            = false
 host_id                      = (known after apply)
 id                           = (known after apply)
 instance_state               = (known after apply)
 instance_type                = "t2.micro"
 ipv6_address_count           = (known after apply)
 ipv6_addresses               = (known after apply)
 key_name                     = (known after apply)
 network_interface_id         = (known after apply)
 password_data                = (known after apply)
 placement_group              = (known after apply)
 primary_network_interface_id = (known after apply)
 private_dns                  = (known after apply)
 private_ip                   = (known after apply)
 public_dns                   = (known after apply)
 public_ip                    = (known after apply)
 security_groups              = (known after apply)
 source_dest_check            = true
 subnet_id                    = (known after apply)
 tags                         = {
 "Name" = "testEC2"
 }
 tenancy                      = (known after apply)
 volume_tags                  = (known after apply)
 vpc_security_group_ids       = [
 "sg-00c448cd3e48ba684",
 ]
 ebs_block_device {
 delete_on_termination = true
 device_name           = "/dev/sdf"
 encrypted             = (known after apply)
 iops                  = (known after apply)
 kms_key_id            = (known after apply)
 snapshot_id           = (known after apply)
 volume_id             = (known after apply)
 volume_size           = 10
 volume_type           = "gp2"
 }
 ephemeral_block_device {
 device_name  = (known after apply)
 no_device    = (known after apply)
 virtual_name = (known after apply)
 }
 network_interface {
 delete_on_termination = (known after apply)
 device_index          = (known after apply)
 network_interface_id  = (known after apply)
 }
 root_block_device {
 delete_on_termination = true
 encrypted             = (known after apply)
 iops                  = (known after apply)
 kms_key_id            = (known after apply)
 volume_id             = (known after apply)
 volume_size           = 20
 volume_type           = "gp2"
 }
 } 
 Plan: 1 to add, 0 to change, 0 to destroy.
 Do you want to perform these actions?
   Terraform will perform the actions described above.
   Only 'yes' will be accepted to approve.
 Enter a value: yes
 aws_instance.testEC2: Creating…
 aws_instance.testEC2: Still creating… [10s elapsed]
 aws_instance.testEC2: Still creating… [20s elapsed]
 aws_instance.testEC2: Still creating… [30s elapsed]
 aws_instance.testEC2: Creation complete after 36s [id=i-0501a62ccf6380761]
 Apply complete! Resources: 1 added, 0 changed, 0 destroyed.
 Outputs:
 public_ip_of_testEC2 = 18.191.123.168

Check on the AWS console!

terraform aws ec2

Have a good nice!

,

About HuuPV

My name is Huu. I love technology and especially Devops Skill such as Docker, vagrant, git so forth. I likes open-sources. so I created DevopsRoles.com site to share the knowledge that I have learned. My Job: IT system administrator. Hobbies: summoners war game, gossip.
View all posts by HuuPV →

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