Files
eks/modules/network/main.tf
2025-07-22 18:29:08 -05:00

75 lines
2.1 KiB
HCL

// Private subnet
resource "aws_subnet" "private" {
for_each = local.az_private_subnets
vpc_id = data.aws_vpc.selected.id
cidr_block = each.value
availability_zone = each.key
tags = {
Name = "EKS (${var.cluster_name}) private subnet (${each.key})",
"kubernetes.io/role/internal-elb" = 1
}
}
resource "aws_route_table" "private" {
for_each = local.az_private_subnets
vpc_id = data.aws_vpc.selected.id
tags = {
Name = "EKS (${var.cluster_name}) private subnet (${each.key})"
}
}
resource "aws_route_table_association" "private" {
for_each = local.az_private_subnets
subnet_id = aws_subnet.private[each.key].id
route_table_id = aws_route_table.private[each.key].id
}
// Public subnet
resource "aws_subnet" "public" {
for_each = local.az_public_subnets
vpc_id = data.aws_vpc.selected.id
cidr_block = each.value
availability_zone = each.key
tags = {
Name = "EKS (${var.cluster_name}) public subnet (${each.key})"
"kubernetes.io/role/elb" = 1
}
map_public_ip_on_launch = true
}
resource "aws_route_table" "public" {
vpc_id = data.aws_vpc.selected.id
tags = {
Name = "EKS (${var.cluster_name}) public subnet"
}
}
resource "aws_route_table_association" "public" {
for_each = local.az_public_subnets
subnet_id = aws_subnet.public[each.key].id
route_table_id = aws_route_table.public.id
}
resource "aws_route" "public_internet_gateway" {
route_table_id = aws_route_table.public.id
destination_cidr_block = "0.0.0.0/0"
gateway_id = data.aws_internet_gateway.default.id
}
// NAT gateway
resource "aws_eip" "nat" {
domain = "vpc"
}
resource "aws_nat_gateway" "nat_gateway" {
allocation_id = aws_eip.nat.id
subnet_id = aws_subnet.public[local.azs[0]].id
}
resource "aws_route" "nat_gateway" {
for_each = local.az_private_subnets
route_table_id = aws_route_table.private[each.key].id
destination_cidr_block = "0.0.0.0/0"
nat_gateway_id = aws_nat_gateway.nat_gateway.id
}