146 lines
4.0 KiB
HCL
146 lines
4.0 KiB
HCL
# DNS record for the apiserver load balancer
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resource "azurerm_dns_a_record" "apiserver" {
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resource_group_name = var.dns_zone_group
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# DNS Zone name where record should be created
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zone_name = var.dns_zone
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# DNS record
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name = var.cluster_name
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ttl = 300
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# IPv4 address of apiserver load balancer
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records = [azurerm_public_ip.apiserver-ipv4.ip_address]
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}
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# Static IPv4 address for the apiserver frontend
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resource "azurerm_public_ip" "apiserver-ipv4" {
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resource_group_name = azurerm_resource_group.cluster.name
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name = "${var.cluster_name}-apiserver-ipv4"
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location = var.region
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sku = "Standard"
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allocation_method = "Static"
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}
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# Static IPv4 address for the ingress frontend
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resource "azurerm_public_ip" "ingress-ipv4" {
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resource_group_name = azurerm_resource_group.cluster.name
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name = "${var.cluster_name}-ingress-ipv4"
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location = var.region
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sku = "Standard"
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allocation_method = "Static"
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}
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# Network Load Balancer for apiservers and ingress
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resource "azurerm_lb" "cluster" {
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resource_group_name = azurerm_resource_group.cluster.name
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name = var.cluster_name
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location = var.region
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sku = "Standard"
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frontend_ip_configuration {
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name = "apiserver"
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public_ip_address_id = azurerm_public_ip.apiserver-ipv4.id
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}
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frontend_ip_configuration {
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name = "ingress"
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public_ip_address_id = azurerm_public_ip.ingress-ipv4.id
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}
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}
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resource "azurerm_lb_rule" "apiserver" {
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name = "apiserver"
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loadbalancer_id = azurerm_lb.cluster.id
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frontend_ip_configuration_name = "apiserver"
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protocol = "Tcp"
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frontend_port = 6443
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backend_port = 6443
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backend_address_pool_ids = [azurerm_lb_backend_address_pool.controller.id]
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probe_id = azurerm_lb_probe.apiserver.id
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}
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resource "azurerm_lb_rule" "ingress-http" {
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name = "ingress-http"
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loadbalancer_id = azurerm_lb.cluster.id
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frontend_ip_configuration_name = "ingress"
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disable_outbound_snat = true
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protocol = "Tcp"
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frontend_port = 80
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backend_port = 80
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backend_address_pool_ids = [azurerm_lb_backend_address_pool.worker.id]
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probe_id = azurerm_lb_probe.ingress.id
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}
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resource "azurerm_lb_rule" "ingress-https" {
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name = "ingress-https"
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loadbalancer_id = azurerm_lb.cluster.id
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frontend_ip_configuration_name = "ingress"
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disable_outbound_snat = true
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protocol = "Tcp"
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frontend_port = 443
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backend_port = 443
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backend_address_pool_ids = [azurerm_lb_backend_address_pool.worker.id]
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probe_id = azurerm_lb_probe.ingress.id
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}
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# Worker outbound TCP/UDP SNAT
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resource "azurerm_lb_outbound_rule" "worker-outbound" {
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name = "worker"
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loadbalancer_id = azurerm_lb.cluster.id
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frontend_ip_configuration {
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name = "ingress"
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}
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protocol = "All"
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backend_address_pool_id = azurerm_lb_backend_address_pool.worker.id
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}
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# Address pool of controllers
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resource "azurerm_lb_backend_address_pool" "controller" {
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name = "controller"
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loadbalancer_id = azurerm_lb.cluster.id
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}
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# Address pool of workers
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resource "azurerm_lb_backend_address_pool" "worker" {
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name = "worker"
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loadbalancer_id = azurerm_lb.cluster.id
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}
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# Health checks / probes
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# TCP health check for apiserver
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resource "azurerm_lb_probe" "apiserver" {
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name = "apiserver"
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loadbalancer_id = azurerm_lb.cluster.id
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protocol = "Tcp"
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port = 6443
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# unhealthy threshold
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number_of_probes = 3
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interval_in_seconds = 5
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}
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# HTTP health check for ingress
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resource "azurerm_lb_probe" "ingress" {
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name = "ingress"
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loadbalancer_id = azurerm_lb.cluster.id
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protocol = "Http"
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port = 10254
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request_path = "/healthz"
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# unhealthy threshold
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number_of_probes = 3
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interval_in_seconds = 5
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}
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