data "aws_availability_zones" "all" { } # Network VPC, gateway, and routes resource "aws_vpc" "network" { cidr_block = var.host_cidr assign_generated_ipv6_cidr_block = true enable_dns_support = true enable_dns_hostnames = true tags = { "Name" = var.cluster_name } } resource "aws_internet_gateway" "gateway" { vpc_id = aws_vpc.network.id tags = { "Name" = var.cluster_name } } resource "aws_route_table" "default" { vpc_id = aws_vpc.network.id route { cidr_block = "0.0.0.0/0" gateway_id = aws_internet_gateway.gateway.id } route { ipv6_cidr_block = "::/0" gateway_id = aws_internet_gateway.gateway.id } tags = { "Name" = var.cluster_name } } # Subnets (one per availability zone) resource "aws_subnet" "public" { count = length(data.aws_availability_zones.all.names) vpc_id = aws_vpc.network.id availability_zone = data.aws_availability_zones.all.names[count.index] cidr_block = cidrsubnet(var.host_cidr, 4, count.index) ipv6_cidr_block = cidrsubnet(aws_vpc.network.ipv6_cidr_block, 8, count.index) map_public_ip_on_launch = true assign_ipv6_address_on_creation = true tags = { "Name" = "${var.cluster_name}-public-${count.index}" } } resource "aws_route_table_association" "public" { count = length(data.aws_availability_zones.all.names) route_table_id = aws_route_table.default.id subnet_id = element(aws_subnet.public.*.id, count.index) }