testvpc.tf

# Define some variables used in resource creation
variable "keypair" {}
variable "vpcname" {}
variable "cidr" {}
variable "images" {
  type = "map"
  default = {
    web="ami-c79c63bf"
    mngt="ami-7b986703"
    db="ami-189d6260"
    dblb="ami-569b642e"
    app="ami-bf9d62c7"
  }
}

# Create resources for application deployment
resource "aws_vpc" "vpc_tuto" {
  cidr_block = "${var.cidr}/16"
  enable_dns_support = true
  enable_dns_hostnames = true
  tags = {
    Name = "${var.vpcname}"
  }
}

resource "aws_subnet" "public_subnet_us_west_1a" {
  vpc_id                  = "${aws_vpc.vpc_tuto.id}"
  cidr_block              = "${var.cidr}/20"
  map_public_ip_on_launch = true
  tags = {
    Name =  "Subnet main"
  }
}

resource "aws_internet_gateway" "gw" {
  vpc_id = "${aws_vpc.vpc_tuto.id}"
  tags {
        Name = "InternetGateway"
    }
}

resource "aws_route" "internet_access" {
  route_table_id         = "${aws_vpc.vpc_tuto.main_route_table_id}"
  destination_cidr_block = "0.0.0.0/0"
  gateway_id             = "${aws_internet_gateway.gw.id}"
}

resource "aws_route_table_association" "public_subnet_us_west_1a_association" {
    subnet_id = "${aws_subnet.public_subnet_us_west_1a.id}"
    route_table_id = "${aws_vpc.vpc_tuto.main_route_table_id}"
}

resource "aws_security_group" "app_sec_group" {
    name = "app_sec_group"

    ingress {
        from_port   = 22
        to_port     = 22
        protocol    = "tcp"
        cidr_blocks = ["0.0.0.0/0"]
    }
    ingress {
        from_port   = 80
        to_port     = 80
        protocol    = "tcp"
        cidr_blocks = ["0.0.0.0/0"]
    }
    ingress {
        from_port   = 443
        to_port     = 443
        protocol    = "tcp"
        cidr_blocks = ["0.0.0.0/0"]
    }
    ingress {
        from_port   = 8000
        to_port     = 8000
        protocol    = "tcp"
        cidr_blocks = ["0.0.0.0/0"]
    }
    ingress {
        from_port   = 3306
        to_port     = 3306
        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"]
    }
    vpc_id = "${aws_vpc.vpc_tuto.id}"
}

resource "aws_instance" "Db1" {
  ami           = "${var.images["db"]}"
  instance_type = "t2.micro"
  subnet_id = "${aws_subnet.public_subnet_us_west_1a.id}"
  vpc_security_group_ids = ["${aws_security_group.app_sec_group.id}"]
  key_name                    = "${var.keypair}"
  tags {
        App = "${var.vpcname}"
        Name = "Db1"
        Tier = "DB"
  }
}

resource "aws_instance" "DbLb" {
  ami           = "${var.images["dblb"]}"
  instance_type = "t2.micro"
  subnet_id = "${aws_subnet.public_subnet_us_west_1a.id}"
  vpc_security_group_ids = ["${aws_security_group.app_sec_group.id}"]
  key_name                    = "${var.keypair}"
  tags {
        App = "${var.vpcname}"
        Name = "DB Load Balancer"
        Tier = "DBLB"
  }
}

resource "aws_instance" "App1" {
  ami           = "${var.images["app"]}"
  instance_type = "t2.micro"
  subnet_id = "${aws_subnet.public_subnet_us_west_1a.id}"
  vpc_security_group_ids = ["${aws_security_group.app_sec_group.id}"]
  key_name                    = "${var.keypair}"
  tags {
        App = "${var.vpcname}"
        Name = "App1"
        Tier = "App"
  }
}

resource "aws_instance" "App2" {
  ami           = "${var.images["app"]}"
  instance_type = "t2.micro"
  subnet_id = "${aws_subnet.public_subnet_us_west_1a.id}"
  vpc_security_group_ids = ["${aws_security_group.app_sec_group.id}"]
  key_name                    = "${var.keypair}"
  tags {
        App = "${var.vpcname}"
        Name = "App2"
        Tier = "App"
  }
}

resource "aws_instance" "App3" {
  ami           = "${var.images["app"]}"
  instance_type = "t2.micro"
  subnet_id = "${aws_subnet.public_subnet_us_west_1a.id}"
  vpc_security_group_ids = ["${aws_security_group.app_sec_group.id}"]
  key_name                    = "${var.keypair}"
  tags {
        App = "${var.vpcname}"
        Name = "App3"
        Tier = "App"
  }
}

resource "aws_instance" "Web1" {
  ami           = "${var.images["web"]}"
  instance_type = "t2.micro"
  subnet_id = "${aws_subnet.public_subnet_us_west_1a.id}"
  vpc_security_group_ids = ["${aws_security_group.app_sec_group.id}"]
  key_name                    = "${var.keypair}"
  tags {
        App = "${var.vpcname}"
        Name = "Web1"
        Tier = "Web"
  }
}

resource "aws_instance" "Web2" {
  ami           = "${var.images["web"]}"
  instance_type = "t2.micro"
  subnet_id = "${aws_subnet.public_subnet_us_west_1a.id}"
  vpc_security_group_ids = ["${aws_security_group.app_sec_group.id}"]
  key_name                    = "${var.keypair}"
  tags {
        App = "${var.vpcname}"
        Name = "Web2"
        Tier = "Web"
  }
}

resource "aws_instance" "Db2" {
  ami           = "${var.images["db"]}"
  instance_type = "t2.micro"
  subnet_id = "${aws_subnet.public_subnet_us_west_1a.id}"
  vpc_security_group_ids = ["${aws_security_group.app_sec_group.id}"]
  key_name                    = "${var.keypair}"
  tags {
        App = "${var.vpcname}"
        Name = "Db2"
        Tier = "DB"
  }
}

resource "aws_instance" "Mngt" {
  ami           = "${var.images["mngt"]}"
  instance_type = "t2.micro"
  subnet_id = "${aws_subnet.public_subnet_us_west_1a.id}"
  vpc_security_group_ids = ["${aws_security_group.app_sec_group.id}"]
  key_name                    = "${var.keypair}"
  tags {
        App = "${var.vpcname}"
        Name = "Management"
        Tier = "Mngt"
  }
}