Breaking blocks with Terraform | S01 E02 | Build On Weekly

# Setting up the AWS Terraform provider
terraform {
required_providers {
aws = {
source = "hashicorp/aws"
version = "~> 4.22"
}
}
}

provider "aws" {
profile = "default"
region = "us-west-2"
}

# Just a variable with the URL to the Minecraft server JAR (this changes over time)
variable "mojang_server_url" {
type = string
default = "https://launcher.mojang.com/v1/objects/e00c4052dac1d59a1188b2aa9d5a87113aaf1122/server.jar"
}

# Security - we need to allow a specific port to our EC2 instance
resource "aws_security_group" "minecraft" {
ingress {
description = "Minecraft port"
from_port = 25565
to_port = 25565
protocol = "tcp"
cidr_blocks = ["0.0.0.0/0"]
}
egress {
description = "Send Anywhere"
from_port = 0
to_port = 0
protocol = "-1"
cidr_blocks = ["0.0.0.0/0"]
}
tags = {
Name = "Minecraft Security Group"
}
}

# EC2 Instance - THIS is where our Minecraft server runs
resource "aws_instance" "minecraft" {
ami = "ami-098e42ae54c764c35"
instance_type = "t2.xlarge"
vpc_security_group_ids = [aws_security_group.minecraft.id]
associate_public_ip_address = true

## This role is specific to my account, so make sure to attach an IAM role relevant to your setup.
iam_instance_profile = "SSMEC2Role"
root_block_device {
volume_size = 30
}

## This is a bash script that will be executed during the first launch of the Virtual Machine, and it sets up all we need to run Minecraft
user_data = <<-EOF
#!/bin/bash
sudo yum -y update
sudo rpm --import https://yum.corretto.aws/corretto.key
sudo curl -L -o /etc/yum.repos.d/corretto.repo https://yum.corretto.aws/corretto.repo
sudo yum install -y java-17-amazon-corretto-devel.x86_64
wget -O server.jar ${var.mojang_server_url}
java -Xmx1024M -Xms1024M -jar server.jar nogui
sed -i 's/eula=false/eula=true/' eula.txt
screen -d -m java -Xmx1024M -Xms1024M -jar server.jar nogui
EOF
tags = {
Name = "Minecraft Server"
}
}

output "instance_ip_addr" {
value = aws_instance.minecraft.public_ip
}