b9e5b0cb53
* [upcloud] add option to use preconfigured cpu/mem plan * [upcloud] add option to use firewall rules for API server/SSH access * [upcloud] add option to use managed load balancer
310 lines
8.5 KiB
HCL
310 lines
8.5 KiB
HCL
locals {
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# Create a list of all disks to create
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disks = flatten([
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for node_name, machine in var.machines : [
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for disk_name, disk in machine.additional_disks : {
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disk = disk
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disk_name = disk_name
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node_name = node_name
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}
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]
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])
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lb_backend_servers = flatten([
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for lb_name, loadbalancer in var.loadbalancers : [
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for backend_server in loadbalancer.backend_servers : {
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port = loadbalancer.port
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lb_name = lb_name
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server_name = backend_server
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}
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]
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])
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# If prefix is set, all resources will be prefixed with "${var.prefix}-"
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# Else don't prefix with anything
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resource-prefix = "%{ if var.prefix != ""}${var.prefix}-%{ endif }"
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}
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resource "upcloud_network" "private" {
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name = "${local.resource-prefix}k8s-network"
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zone = var.zone
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ip_network {
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address = var.private_network_cidr
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dhcp = true
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family = "IPv4"
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}
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}
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resource "upcloud_storage" "additional_disks" {
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for_each = {
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for disk in local.disks: "${disk.node_name}_${disk.disk_name}" => disk.disk
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}
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size = each.value.size
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tier = each.value.tier
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title = "${local.resource-prefix}${each.key}"
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zone = var.zone
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}
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resource "upcloud_server" "master" {
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for_each = {
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for name, machine in var.machines :
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name => machine
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if machine.node_type == "master"
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}
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hostname = "${local.resource-prefix}${each.key}"
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plan = each.value.plan
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cpu = each.value.plan == null ? each.value.cpu : null
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mem = each.value.plan == null ? each.value.mem : null
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zone = var.zone
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template {
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storage = var.template_name
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size = each.value.disk_size
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}
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# Public network interface
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network_interface {
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type = "public"
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}
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# Private network interface
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network_interface {
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type = "private"
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network = upcloud_network.private.id
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}
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# Ignore volumes created by csi-driver
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lifecycle {
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ignore_changes = [storage_devices]
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}
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firewall = var.firewall_enabled
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dynamic "storage_devices" {
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for_each = {
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for disk_key_name, disk in upcloud_storage.additional_disks :
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disk_key_name => disk
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# Only add the disk if it matches the node name in the start of its name
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if length(regexall("^${each.key}_.+", disk_key_name)) > 0
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}
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content {
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storage = storage_devices.value.id
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}
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}
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# Include at least one public SSH key
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login {
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user = var.username
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keys = var.ssh_public_keys
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create_password = false
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}
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}
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resource "upcloud_server" "worker" {
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for_each = {
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for name, machine in var.machines :
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name => machine
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if machine.node_type == "worker"
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}
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hostname = "${local.resource-prefix}${each.key}"
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plan = each.value.plan
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cpu = each.value.plan == null ? each.value.cpu : null
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mem = each.value.plan == null ? each.value.mem : null
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zone = var.zone
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template {
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storage = var.template_name
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size = each.value.disk_size
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}
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# Public network interface
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network_interface {
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type = "public"
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}
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# Private network interface
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network_interface {
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type = "private"
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network = upcloud_network.private.id
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}
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# Ignore volumes created by csi-driver
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lifecycle {
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ignore_changes = [storage_devices]
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}
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firewall = var.firewall_enabled
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dynamic "storage_devices" {
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for_each = {
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for disk_key_name, disk in upcloud_storage.additional_disks :
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disk_key_name => disk
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# Only add the disk if it matches the node name in the start of its name
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if length(regexall("^${each.key}_.+", disk_key_name)) > 0
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}
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content {
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storage = storage_devices.value.id
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}
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}
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# Include at least one public SSH key
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login {
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user = var.username
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keys = var.ssh_public_keys
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create_password = false
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}
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}
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resource "upcloud_firewall_rules" "master" {
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for_each = upcloud_server.master
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server_id = each.value.id
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dynamic firewall_rule {
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for_each = var.master_allowed_remote_ips
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content {
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action = "accept"
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comment = "Allow master API access from this network"
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destination_port_end = "6443"
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destination_port_start = "6443"
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direction = "in"
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family = "IPv4"
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protocol = "tcp"
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source_address_end = firewall_rule.value.end_address
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source_address_start = firewall_rule.value.start_address
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}
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}
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dynamic firewall_rule {
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for_each = length(var.master_allowed_remote_ips) > 0 ? [1] : []
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content {
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action = "drop"
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comment = "Deny master API access from other networks"
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destination_port_end = "6443"
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destination_port_start = "6443"
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direction = "in"
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family = "IPv4"
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protocol = "tcp"
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source_address_end = "255.255.255.255"
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source_address_start = "0.0.0.0"
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}
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}
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dynamic firewall_rule {
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for_each = var.k8s_allowed_remote_ips
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content {
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action = "accept"
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comment = "Allow SSH from this network"
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destination_port_end = "22"
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destination_port_start = "22"
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direction = "in"
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family = "IPv4"
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protocol = "tcp"
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source_address_end = firewall_rule.value.end_address
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source_address_start = firewall_rule.value.start_address
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}
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}
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dynamic firewall_rule {
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for_each = length(var.k8s_allowed_remote_ips) > 0 ? [1] : []
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content {
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action = "drop"
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comment = "Deny SSH from other networks"
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destination_port_end = "22"
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destination_port_start = "22"
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direction = "in"
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family = "IPv4"
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protocol = "tcp"
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source_address_end = "255.255.255.255"
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source_address_start = "0.0.0.0"
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}
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}
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}
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resource "upcloud_firewall_rules" "k8s" {
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for_each = upcloud_server.worker
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server_id = each.value.id
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dynamic firewall_rule {
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for_each = var.k8s_allowed_remote_ips
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content {
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action = "accept"
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comment = "Allow SSH from this network"
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destination_port_end = "22"
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destination_port_start = "22"
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direction = "in"
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family = "IPv4"
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protocol = "tcp"
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source_address_end = firewall_rule.value.end_address
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source_address_start = firewall_rule.value.start_address
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}
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}
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dynamic firewall_rule {
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for_each = length(var.k8s_allowed_remote_ips) > 0 ? [1] : []
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content {
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action = "drop"
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comment = "Deny SSH from other networks"
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destination_port_end = "22"
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destination_port_start = "22"
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direction = "in"
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family = "IPv4"
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protocol = "tcp"
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source_address_end = "255.255.255.255"
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source_address_start = "0.0.0.0"
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}
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}
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}
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resource "upcloud_loadbalancer" "lb" {
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count = var.loadbalancer_enabled ? 1 : 0
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configured_status = "started"
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name = "${local.resource-prefix}lb"
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plan = var.loadbalancer_plan
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zone = var.zone
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network = upcloud_network.private.id
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}
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resource "upcloud_loadbalancer_backend" "lb_backend" {
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for_each = var.loadbalancer_enabled ? var.loadbalancers : {}
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loadbalancer = upcloud_loadbalancer.lb[0].id
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name = "lb-backend-${each.key}"
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}
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resource "upcloud_loadbalancer_frontend" "lb_frontend" {
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for_each = var.loadbalancer_enabled ? var.loadbalancers : {}
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loadbalancer = upcloud_loadbalancer.lb[0].id
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name = "lb-frontend-${each.key}"
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mode = "tcp"
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port = each.value.port
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default_backend_name = upcloud_loadbalancer_backend.lb_backend[each.key].name
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}
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resource "upcloud_loadbalancer_static_backend_member" "lb_backend_member" {
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for_each = {
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for be_server in local.lb_backend_servers:
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"${be_server.server_name}-lb-backend-${be_server.lb_name}" => be_server
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if var.loadbalancer_enabled
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}
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backend = upcloud_loadbalancer_backend.lb_backend[each.value.lb_name].id
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name = "${local.resource-prefix}${each.key}"
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ip = merge(upcloud_server.master, upcloud_server.worker)[each.value.server_name].network_interface[1].ip_address
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port = each.value.port
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weight = 100
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max_sessions = var.loadbalancer_plan == "production-small" ? 50000 : 1000
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enabled = true
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}
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