network.tf

/*
* Sets up global resources such as VPC, route table and subnets.
*/

provider "aws" {
	access_key = "${var.access_key}"
	secret_key = "${var.secret_key}"
	region = "${var.region}"
}

// DHCP Options Set
resource "aws_vpc_dhcp_options" "staging_dos" {
	domain_name = "service.consul"
	domain_name_servers = "127.0.0.1, AmazonProvidedDNS"
	ntp_servers = "127.0.0.1"
	netbios_name_servers = "127.0.0.1"
	netbios_node_type = 2

	tags {
		Name = "consul-dns-resolver-stg"
	}
}

resource "aws_vpc_dhcp_options_association" "dos_association" {
	vpc_id = "${aws_vpc.main.id}"
	dhcp_options_id = "${aws_vpc_dhcp_options.staging_dos.id}"
}

// VPC
resource "aws_vpc" "main" {
	cidr_block = "10.0.0.0/16"
	tags {
		Name = "main"
	}
	enable_dns_support = true
	enable_dns_hostnames = true
}

resource "aws_internet_gateway" "network" {
	vpc_id = "${aws_vpc.main.id}"
}

resource "aws_route_table" "network" {
	vpc_id = "${aws_vpc.main.id}"
	route {
		cidr_block = "0.0.0.0/0"
		gateway_id = "${aws_internet_gateway.network.id}"
	}
}

resource "aws_main_route_table_association" "vpc-main-route-table" {
	vpc_id = "${aws_vpc.main.id}"
	route_table_id = "${aws_route_table.network.id}"
}

// Subnet A
resource "aws_subnet" "subnet_a" {
	vpc_id = "${aws_vpc.main.id}"
	availability_zone = "${var.zone_a}"
	cidr_block = "10.0.0.0/24"
	map_public_ip_on_launch = true
	tags {
		Name = "${var.env}-a"
	}
}

resource "aws_route_table_association" "network_a" {
	subnet_id = "${aws_subnet.subnet_a.id}"
	route_table_id = "${aws_route_table.network.id}"
}

// Subnet B
resource "aws_subnet" "subnet_b" {
	vpc_id = "${aws_vpc.main.id}"
	availability_zone = "${var.zone_b}"
	cidr_block = "10.0.1.0/24"
	map_public_ip_on_launch = true
	tags {
		Name = "${var.env}-b"
	}
}

resource "aws_route_table_association" "network_b" {
	subnet_id = "${aws_subnet.subnet_b.id}"
	route_table_id = "${aws_route_table.network.id}"
}

output "vpc-id" {
    value = "${aws_vpc.main.id}"
}

output "subnet-a-id" {
    value = "${aws_subnet.subnet_a.id}"
}

output "subnet-b-id" {
    value = "${aws_subnet.subnet_b.id}"
}