typhoon/aws/flatcar-linux/kubernetes/network.tf

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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
tags = {
"Name" = var.cluster_name
}
}
resource "aws_route" "egress-ipv4" {
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route_table_id = aws_route_table.default.id
destination_cidr_block = "0.0.0.0/0"
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gateway_id = aws_internet_gateway.gateway.id
}
resource "aws_route" "egress-ipv6" {
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route_table_id = aws_route_table.default.id
destination_ipv6_cidr_block = "::/0"
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gateway_id = aws_internet_gateway.gateway.id
}
# 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 = aws_subnet.public.*.id[count.index]
}