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lb.tf
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locals {
lb_external_ip = var.assign_public_ip ? 1 : 0
}
# ================= ui lb =========================== #
resource "azurerm_public_ip" "ui_ip" {
count = var.assign_public_ip ? 1 : 0
name = "${var.prefix}-${var.cluster_name}-ui-public-ip"
location = local.location
resource_group_name = local.resource_group_name
allocation_method = "Static"
sku = "Standard"
}
resource "azurerm_lb" "ui_lb" {
count = var.create_lb ? 1 : 0
name = "${var.prefix}-${var.cluster_name}-ui-lb"
resource_group_name = var.rg_name
location = data.azurerm_resource_group.rg.location
sku = "Standard"
dynamic "frontend_ip_configuration" {
for_each = range(0, local.lb_external_ip)
content {
name = "${var.prefix}-${var.cluster_name}-public-ui-frontend"
public_ip_address_id = azurerm_public_ip.ui_ip[0].id
}
}
dynamic "frontend_ip_configuration" {
for_each = range(local.lb_external_ip, 1)
content {
name = "${var.prefix}-${var.cluster_name}-ui-lb-frontend"
subnet_id = data.azurerm_subnet.subnet.id
private_ip_address_allocation = "Dynamic"
private_ip_address_version = "IPv4"
}
}
tags = merge(var.tags_map, { "weka_cluster" : var.cluster_name })
lifecycle {
ignore_changes = [tags]
}
depends_on = [module.network]
}
resource "azurerm_lb_backend_address_pool" "ui_lb_backend_pool" {
count = var.create_lb ? 1 : 0
name = "${var.prefix}-${var.cluster_name}-ui-lb-backend-pool"
loadbalancer_id = azurerm_lb.ui_lb[0].id
depends_on = [azurerm_lb.ui_lb]
}
resource "azurerm_lb_probe" "ui_lb_probe" {
count = var.create_lb ? 1 : 0
loadbalancer_id = azurerm_lb.ui_lb[0].id
name = "${var.prefix}-${var.cluster_name}-ui-lb-probe"
protocol = "Https"
request_path = "/api/v2/ui/healthcheck"
port = 14000
interval_in_seconds = 5
number_of_probes = 2
depends_on = [azurerm_lb.ui_lb]
}
resource "azurerm_lb_rule" "ui_lb_rule" {
count = var.create_lb ? 1 : 0
loadbalancer_id = azurerm_lb.ui_lb[0].id
name = "${var.prefix}-${var.cluster_name}-ui-lb-rule"
protocol = "Tcp"
frontend_port = 14000
backend_port = 14000
frontend_ip_configuration_name = azurerm_lb.ui_lb[0].frontend_ip_configuration[0].name
backend_address_pool_ids = [azurerm_lb_backend_address_pool.ui_lb_backend_pool[0].id]
probe_id = azurerm_lb_probe.ui_lb_probe[0].id
depends_on = [
azurerm_lb.ui_lb, azurerm_lb_backend_address_pool.ui_lb_backend_pool, azurerm_lb_probe.ui_lb_probe
]
}
# ================= backend lb =========================== #
resource "azurerm_public_ip" "backend_ip" {
count = var.assign_public_ip ? 1 : 0
name = "${var.prefix}-${var.cluster_name}-backend-public-ip"
location = local.location
resource_group_name = local.resource_group_name
allocation_method = "Static"
sku = "Standard"
}
resource "azurerm_lb" "backend_lb" {
count = var.create_lb ? 1 : 0
name = "${var.prefix}-${var.cluster_name}-backend-lb"
resource_group_name = var.rg_name
location = data.azurerm_resource_group.rg.location
sku = "Standard"
tags = merge(var.tags_map, { "weka_cluster" : var.cluster_name })
dynamic "frontend_ip_configuration" {
for_each = range(0, local.lb_external_ip)
content {
name = "${var.prefix}-${var.cluster_name}-public-backend-frontend"
public_ip_address_id = azurerm_public_ip.backend_ip[0].id
}
}
dynamic "frontend_ip_configuration" {
for_each = range(local.lb_external_ip, 1)
content {
name = "${var.prefix}-${var.cluster_name}-backend-lb-frontend"
subnet_id = data.azurerm_subnet.subnet.id
private_ip_address_allocation = "Dynamic"
private_ip_address_version = "IPv4"
}
}
lifecycle {
ignore_changes = [tags]
}
depends_on = [module.network]
}
resource "azurerm_lb_backend_address_pool" "lb_backend_pool" {
count = var.create_lb ? 1 : 0
name = "${var.prefix}-${var.cluster_name}-lb-backend-pool"
loadbalancer_id = azurerm_lb.backend_lb[0].id
depends_on = [azurerm_lb.backend_lb]
}
resource "azurerm_lb_probe" "backend_lb_probe" {
count = var.create_lb ? 1 : 0
loadbalancer_id = azurerm_lb.backend_lb[0].id
name = "${var.prefix}-${var.cluster_name}-lb-probe"
protocol = "Http"
request_path = "/api/v2/healthcheck"
port = 14000
interval_in_seconds = 5
number_of_probes = 2
depends_on = [azurerm_lb.backend_lb]
}
resource "azurerm_lb_rule" "backend_lb_rule" {
count = var.create_lb ? 1 : 0
loadbalancer_id = azurerm_lb.backend_lb[0].id
name = "${var.prefix}-${var.cluster_name}-backend-lb-rule"
protocol = "Tcp"
frontend_port = 14000
backend_port = 14000
frontend_ip_configuration_name = azurerm_lb.backend_lb[0].frontend_ip_configuration[0].name
backend_address_pool_ids = [azurerm_lb_backend_address_pool.lb_backend_pool[0].id]
probe_id = azurerm_lb_probe.backend_lb_probe[0].id
depends_on = [
azurerm_lb_probe.backend_lb_probe, azurerm_lb_backend_address_pool.lb_backend_pool, azurerm_lb.backend_lb
]
}
resource "azurerm_private_dns_a_record" "dns_a_record_backend_lb" {
count = var.create_lb && var.private_dns_zone_use ? 1 : 0
name = lower("${var.cluster_name}-backend")
zone_name = local.private_dns_zone_name
resource_group_name = local.private_dns_rg_name
ttl = 300
records = var.assign_public_ip ? [azurerm_public_ip.backend_ip[0].ip_address] : [azurerm_lb.backend_lb[0].frontend_ip_configuration[0].private_ip_address]
tags = merge(var.tags_map, { "weka_cluster" : var.cluster_name })
depends_on = [azurerm_lb.backend_lb, module.network]
lifecycle {
ignore_changes = [tags]
}
}