c12s-kubespray/contrib/terraform/aws/modules/vpc/main.tf
Vincent Schwarzer 3c6b1480b8 Rewrote AWS Terraform for Kargo
Rewrote AWS Terraform deployment for AWS Kargo. It supports now
multiple Availability Zones, AWS Loadbalancer for Kubernetes API,
Bastion Host, ...

For more information see README
2017-03-06 12:52:02 +01:00

138 lines
3.9 KiB
HCL

resource "aws_vpc" "cluster-vpc" {
cidr_block = "${var.aws_vpc_cidr_block}"
#DNS Related Entries
enable_dns_support = true
enable_dns_hostnames = true
tags {
Name = "kubernetes-${var.aws_cluster_name}-vpc"
}
}
resource "aws_eip" "cluster-nat-eip" {
count = "${length(var.aws_cidr_subnets_public)}"
vpc = true
}
resource "aws_internet_gateway" "cluster-vpc-internetgw" {
vpc_id = "${aws_vpc.cluster-vpc.id}"
tags {
Name = "kubernetes-${var.aws_cluster_name}-internetgw"
}
}
resource "aws_subnet" "cluster-vpc-subnets-public" {
vpc_id = "${aws_vpc.cluster-vpc.id}"
count="${length(var.aws_avail_zones)}"
availability_zone = "${element(var.aws_avail_zones, count.index)}"
cidr_block = "${element(var.aws_cidr_subnets_public, count.index)}"
tags {
Name = "kubernetes-${var.aws_cluster_name}-${element(var.aws_avail_zones, count.index)}-public"
}
}
resource "aws_nat_gateway" "cluster-nat-gateway" {
count = "${length(var.aws_cidr_subnets_public)}"
allocation_id = "${element(aws_eip.cluster-nat-eip.*.id, count.index)}"
subnet_id = "${element(aws_subnet.cluster-vpc-subnets-public.*.id, count.index)}"
}
resource "aws_subnet" "cluster-vpc-subnets-private" {
vpc_id = "${aws_vpc.cluster-vpc.id}"
count="${length(var.aws_avail_zones)}"
availability_zone = "${element(var.aws_avail_zones, count.index)}"
cidr_block = "${element(var.aws_cidr_subnets_private, count.index)}"
tags {
Name = "kubernetes-${var.aws_cluster_name}-${element(var.aws_avail_zones, count.index)}-private"
}
}
#Routing in VPC
#TODO: Do we need two routing tables for each subnet for redundancy or is one enough?
resource "aws_route_table" "kubernetes-public" {
vpc_id = "${aws_vpc.cluster-vpc.id}"
route {
cidr_block = "0.0.0.0/0"
gateway_id = "${aws_internet_gateway.cluster-vpc-internetgw.id}"
}
tags {
Name = "kubernetes-${var.aws_cluster_name}-routetable-public"
}
}
resource "aws_route_table" "kubernetes-private" {
count = "${length(var.aws_cidr_subnets_private)}"
vpc_id = "${aws_vpc.cluster-vpc.id}"
route {
cidr_block = "0.0.0.0/0"
gateway_id = "${element(aws_nat_gateway.cluster-nat-gateway.*.id, count.index)}"
}
tags {
Name = "kubernetes-${var.aws_cluster_name}-routetable-private-${count.index}"
}
}
resource "aws_route_table_association" "kubernetes-public" {
count = "${length(var.aws_cidr_subnets_public)}"
subnet_id = "${element(aws_subnet.cluster-vpc-subnets-public.*.id,count.index)}"
route_table_id = "${aws_route_table.kubernetes-public.id}"
}
resource "aws_route_table_association" "kubernetes-private" {
count = "${length(var.aws_cidr_subnets_private)}"
subnet_id = "${element(aws_subnet.cluster-vpc-subnets-private.*.id,count.index)}"
route_table_id = "${element(aws_route_table.kubernetes-private.*.id,count.index)}"
}
#Kubernetes Security Groups
resource "aws_security_group" "kubernetes" {
name = "kubernetes-${var.aws_cluster_name}-securitygroup"
vpc_id = "${aws_vpc.cluster-vpc.id}"
tags {
Name = "kubernetes-${var.aws_cluster_name}-securitygroup"
}
}
resource "aws_security_group_rule" "allow-all-ingress" {
type = "ingress"
from_port = 0
to_port = 65535
protocol = "-1"
cidr_blocks= ["${var.aws_vpc_cidr_block}"]
security_group_id = "${aws_security_group.kubernetes.id}"
}
resource "aws_security_group_rule" "allow-all-egress" {
type = "egress"
from_port = 0
to_port = 65535
protocol = "-1"
cidr_blocks = ["0.0.0.0/0"]
security_group_id = "${aws_security_group.kubernetes.id}"
}
resource "aws_security_group_rule" "allow-ssh-connections" {
type = "ingress"
from_port = 22
to_port = 22
protocol = "TCP"
cidr_blocks = ["0.0.0.0/0"]
security_group_id = "${aws_security_group.kubernetes.id}"
}