Terraform and EC2 Spot Instances

commands.sh

#!/bin/bash

T=terraform

${T} init
${T} fmt
${T} validate

# to deploy:
${T} plan
${T} apply -auto-approve
${T} show

# to deploy with different values:
${T} apply -var "inst_type=t3a.small" -var "spot_price=0.004"

# to get public ip:
${T} show --json | jq -r ".values.root_module.resources | .[] .values.public_ip"

# alternatively, use 'output' directives within the .tg file
${T} output --json

# terminate instance
${T} apply -auto-approve -destroy

mumbai_spot_instance.tf

terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 3.27"
    }
  }

  required_version = ">= 0.14.9"
}

provider "aws" {
  profile = "ec2-admin"
  region  = "ap-south-1"
  default_tags {
    tags = {
      Name = "AmazonLinux2"
    }
  }
}

resource "aws_spot_instance_request" "amazon_linux" {
  key_name                    = "AP-South-1"
  associate_public_ip_address = true
  wait_for_fulfillment        = true
  ami                         = "ami-011c99152163a87ae"
  spot_price                  = "0.002"
  spot_type                   = "one-time"
  instance_type               = "t3a.micro"
}
  

mumbai_spot_instance_with_outputs.tf

terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 3.27"
    }
  }

  required_version = ">= 0.14.9"
}

variable "aws_region" {
  description = "AWS region"
  type        = string
  default     = "ap-south-1"
}

variable "ssh_key_name" {
  description = "ssh pem key file"
  type = string
  default = "AP-South-1"
}

variable ami {
  description = "Amazon Machine Image identifier, unqiue to each AZ"
  type = string
  default = "ami-011c99152163a87ae"
}

variable inst_type {
  description = "EC2 instance type"
  type = string
  default = "t3a.micro"
}

variable spot_price {
  description = "max spot price"
  type = string
  default = "0.002"
}


provider "aws" {
  profile = "ec2-admin"
  region  = var.aws_region
  default_tags {
    tags = {
      Name = "AmazonLinux2"
    }
  }
}

resource "aws_spot_instance_request" "amazon_linux" {
  key_name                    = var.ssh_key_name
  associate_public_ip_address = true
  wait_for_fulfillment        = true
  ami                         = var.ami
  spot_price                  = var.spot_price
  spot_type                   = "one-time"
  instance_type               = var.inst_type
}

output "instance_public_ip" {
  description = "Public IP address of the EC2 instance"
  value       = aws_spot_instance_request.amazon_linux.public_ip
}

output "instance_id" {
  description = "ID of the EC2 instance"
  value       = aws_spot_instance_request.amazon_linux.id
}

mumbai_spot_instance_with_variables.tf

terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 3.27"
    }
  }

  required_version = ">= 0.14.9"
}

variable "aws_region" {
  description = "AWS region"
  type        = string
  default     = "ap-south-1"
}

variable "ssh_key_name" {
  description = "ssh pem key file"
  type = string
  default = "AP-South-1"
}

variable ami {
  description = "Amazon Machine Image identifier, unqiue to each AZ"
  type = string
  default = "ami-011c99152163a87ae"
}

variable inst_type {
  description = "EC2 instance type"
  type = string
  default = "t3a.micro"
}

variable spot_price {
  description = "max spot price"
  type = string
  default = "0.002"
}


provider "aws" {
  profile = "ec2-admin"
  region  = var.aws_region
  default_tags {
    tags = {
      Name = "AmazonLinux2"
    }
  }
}

resource "aws_spot_instance_request" "amazon_linux" {
  key_name                    = var.ssh_key_name
  associate_public_ip_address = true
  wait_for_fulfillment        = true
  ami                         = var.ami
  spot_price                  = var.spot_price
  spot_type                   = "one-time"
  instance_type               = var.inst_type
}

virginia_with_az.tf

terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 3.27"
    }
  }

  required_version = ">= 0.14.9"
}

provider "aws" {
  profile = "ec2-admin"
  region  = "us-east-1"
  default_tags {
    tags = {
      Name = "AmazonLinux2"
    }
  }
}

resource "aws_spot_instance_request" "amazon_linux" {
  key_name                    = "US-East-1.pem"
  associate_public_ip_address = true
  wait_for_fulfillment        = true
  ami                         = "ami-0dc2d3e4c0f9ebd18"
  spot_price                  = "0.002"
  spot_type                   = "one-time"
  instance_type               = "t3a.nano"
  availability_zone           = "us-east-1b"
}