การจัดเตรียมอินสแตนซ์ EC2

อินสแตนซ์ EC2 ด้วยเทอร์ราฟอร์ม

กำหนดอินสแตนซ์ EC2

resource "aws_instance" "web_server" {
  ami           = "ami-053b04dcd42d5397e" # Example: Amazon Linux 2 in us-east-1
  instance_type = "t2.micro"

  tags = {
    Name = "MyWebServer"
  }
}

เปิดใช้ EC2 รายการแรกของคุณ

provider "aws" {
  region = "us-east-1"
}

resource "aws_instance" "web_server" {
  ami           = "ami-053b04dcd42d5397e" # Amazon Linux 2 AMI for us-east-1
  instance_type = "t2.micro"

  tags = {
    Name = "MyBasicWebServer"
  }
}

รักษาความปลอดภัยให้ EC2: กลุ่มความปลอดภัย

สร้างกลุ่มความปลอดภัย

resource "aws_security_group" "allow_ssh" {
  name        = "allow_ssh_traffic"
  description = "Allow SSH inbound traffic"
  vpc_id      = "vpc-0123456789abcdef0" # IMPORTANT: Replace with YOUR VPC ID!

  ingress {
    description = "SSH from anywhere"
    from_port   = 22
    to_port     = 22
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
  }

  egress {
    from_port   = 0
    to_port     = 0
    protocol    = "-1" # All protocols
    cidr_blocks = ["0.0.0.0/0"]
  }

  tags = {
    Name = "allow_ssh_sg"
  }
}

เชื่อมต่อกลุ่มความปลอดภัยกับ EC2

provider "aws" {
  region = "us-east-1"
}

resource "aws_security_group" "allow_ssh" {
  name        = "allow_ssh_traffic_example"
  description = "Allow SSH inbound traffic"
  vpc_id      = "vpc-0123456789abcdef0" # IMPORTANT: Replace with YOUR VPC ID!

  ingress {
    from_port   = 22
    to_port     = 22
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
  }
  egress {
    from_port   = 0
    to_port     = 0
    protocol    = "-1"
    cidr_blocks = ["0.0.0.0/0"]
  }
}

resource "aws_instance" "web_server" {
  ami             = "ami-053b04dcd42d5397e"
  instance_type   = "t2.micro"
  vpc_security_group_ids = [
    aws_security_group.allow_ssh.id
  ]

  tags = {
    Name = "WebServerWithSSH"
  }
}

เครือข่าย EC2: VPC และซับเน็ต

สร้างเครือข่ายพื้นฐาน

resource "aws_vpc" "main" {
  cidr_block = "10.0.0.0/16"
  tags = {
    Name = "main-vpc-lesson"
  }
}

resource "aws_subnet" "public" {
  vpc_id            = aws_vpc.main.id
  cidr_block        = "10.0.1.0/24"
  availability_zone = "us-east-1a"
  map_public_ip_on_launch = true # Instances in this subnet get a public IP
  tags = {
    Name = "public-subnet-lesson"
  }
}

resource "aws_internet_gateway" "gw" {
  vpc_id = aws_vpc.main.id
  tags = {
    Name = "main-gw-lesson"
  }
}

resource "aws_route_table" "public_rt" {
  vpc_id = aws_vpc.main.id

  route {
    cidr_block = "0.0.0.0/0" # Traffic to the internet
    gateway_id = aws_internet_gateway.gw.id
  }
  tags = {
    Name = "public-rt-lesson"
  }
}

resource "aws_route_table_association" "public_rt_assoc" {
  subnet_id      = aws_subnet.public.id
  route_table_id = aws_route_table.public_rt.id
}

EC2 ในเครือข่ายแบบกำหนดเองของคุณ

provider "aws" {
  region = "us-east-1"
}

resource "aws_vpc" "main" {
  cidr_block = "10.0.0.0/16"
  tags = { Name = "main-vpc-lesson" }
}

resource "aws_subnet" "public" {
  vpc_id            = aws_vpc.main.id
  cidr_block        = "10.0.1.0/24"
  availability_zone = "us-east-1a"
  map_public_ip_on_launch = true
  tags = { Name = "public-subnet-lesson" }
}

resource "aws_internet_gateway" "gw" {
  vpc_id = aws_vpc.main.id
  tags = { Name = "main-gw-lesson" }
}

resource "aws_route_table" "public_rt" {
  vpc_id = aws_vpc.main.id
  route {
    cidr_block = "0.0.0.0/0"
    gateway_id = aws_internet_gateway.gw.id
  }
  tags = { Name = "public-rt-lesson" }
}

resource "aws_route_table_association" "public_rt_assoc" {
  subnet_id      = aws_subnet.public.id
  route_table_id = aws_route_table.public_rt.id
}

resource "aws_security_group" "allow_ssh" {
  name        = "allow_ssh_lesson"
  description = "Allow SSH inbound traffic"
  vpc_id      = aws_vpc.main.id
  ingress {
    from_port   = 22
    to_port     = 22
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
  }
  egress {
    from_port   = 0
    to_port     = 0
    protocol    = "-1"
    cidr_blocks = ["0.0.0.0/0"]
  }
}

resource "aws_instance" "web_server" {
  ami             = "ami-053b04dcd42d5397e"
  instance_type   = "t2.micro"
  subnet_id       = aws_subnet.public.id
  vpc_security_group_ids = [
    aws_security_group.allow_ssh.id
  ]
  associate_public_ip_address = true
  tags = {
    Name = "FullWebServerLesson"
  }
}

การตรวจสอบการกำหนดค่า EC2

ทบทวน: EC2 ด้วย Terraform