70 lines
1.8 KiB
HCL
70 lines
1.8 KiB
HCL
# Network Load Balancer DNS Record
|
|
resource "aws_route53_record" "apiserver" {
|
|
zone_id = "${var.dns_zone_id}"
|
|
|
|
name = "${format("%s.%s.", var.cluster_name, var.dns_zone)}"
|
|
type = "A"
|
|
|
|
# AWS recommends their special "alias" records for ELBs
|
|
alias {
|
|
name = "${aws_lb.apiserver.dns_name}"
|
|
zone_id = "${aws_lb.apiserver.zone_id}"
|
|
evaluate_target_health = true
|
|
}
|
|
}
|
|
|
|
# Network Load Balancer for apiservers
|
|
resource "aws_lb" "apiserver" {
|
|
name = "${var.cluster_name}-apiserver"
|
|
load_balancer_type = "network"
|
|
internal = false
|
|
|
|
subnets = ["${aws_subnet.public.*.id}"]
|
|
|
|
enable_cross_zone_load_balancing = true
|
|
}
|
|
|
|
# Forward TCP traffic to controllers
|
|
resource "aws_lb_listener" "apiserver-https" {
|
|
load_balancer_arn = "${aws_lb.apiserver.arn}"
|
|
protocol = "TCP"
|
|
port = "443"
|
|
|
|
default_action {
|
|
type = "forward"
|
|
target_group_arn = "${aws_lb_target_group.controllers.arn}"
|
|
}
|
|
}
|
|
|
|
# Target group of controllers
|
|
resource "aws_lb_target_group" "controllers" {
|
|
name = "${var.cluster_name}-controllers"
|
|
vpc_id = "${aws_vpc.network.id}"
|
|
target_type = "instance"
|
|
|
|
protocol = "TCP"
|
|
port = 443
|
|
|
|
# TCP health check for apiserver
|
|
health_check {
|
|
protocol = "TCP"
|
|
port = 443
|
|
|
|
# NLBs required to use same healthy and unhealthy thresholds
|
|
healthy_threshold = 3
|
|
unhealthy_threshold = 3
|
|
|
|
# Interval between health checks required to be 10 or 30
|
|
interval = 10
|
|
}
|
|
}
|
|
|
|
# Attach controller instances to apiserver NLB
|
|
resource "aws_lb_target_group_attachment" "controllers" {
|
|
count = "${var.controller_count}"
|
|
|
|
target_group_arn = "${aws_lb_target_group.controllers.arn}"
|
|
target_id = "${element(aws_instance.controllers.*.id, count.index)}"
|
|
port = 443
|
|
}
|