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main.tf
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main.tf
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data "aws_partition" "current" {}
data "aws_caller_identity" "current" {}
################################################################################
# AMI SSM Parameter
################################################################################
locals {
# Just to ensure templating doesn't fail when values are not provided
ssm_cluster_version = var.cluster_version != null ? var.cluster_version : ""
# TODO - Temporary stopgap for backwards compatibility until v21.0
ami_type_to_user_data_type = {
AL2_x86_64 = "linux"
AL2_x86_64_GPU = "linux"
AL2_ARM_64 = "linux"
BOTTLEROCKET_ARM_64 = "bottlerocket"
BOTTLEROCKET_x86_64 = "bottlerocket"
BOTTLEROCKET_ARM_64_NVIDIA = "bottlerocket"
BOTTLEROCKET_x86_64_NVIDIA = "bottlerocket"
WINDOWS_CORE_2019_x86_64 = "windows"
WINDOWS_FULL_2019_x86_64 = "windows"
WINDOWS_CORE_2022_x86_64 = "windows"
WINDOWS_FULL_2022_x86_64 = "windows"
AL2023_x86_64_STANDARD = "al2023"
AL2023_ARM_64_STANDARD = "al2023"
AL2023_x86_64_NEURON = "al2023"
AL2023_x86_64_NVIDIA = "al2023"
}
user_data_type = local.ami_type_to_user_data_type[var.ami_type]
# Map the AMI type to the respective SSM param path
ami_type_to_ssm_param = {
AL2_x86_64 = "/aws/service/eks/optimized-ami/${local.ssm_cluster_version}/amazon-linux-2/recommended/image_id"
AL2_x86_64_GPU = "/aws/service/eks/optimized-ami/${local.ssm_cluster_version}/amazon-linux-2-gpu/recommended/image_id"
AL2_ARM_64 = "/aws/service/eks/optimized-ami/${local.ssm_cluster_version}/amazon-linux-2-arm64/recommended/image_id"
BOTTLEROCKET_ARM_64 = "/aws/service/bottlerocket/aws-k8s-${local.ssm_cluster_version}/arm64/latest/image_id"
BOTTLEROCKET_x86_64 = "/aws/service/bottlerocket/aws-k8s-${local.ssm_cluster_version}/x86_64/latest/image_id"
BOTTLEROCKET_ARM_64_NVIDIA = "/aws/service/bottlerocket/aws-k8s-${local.ssm_cluster_version}-nvidia/arm64/latest/image_id"
BOTTLEROCKET_x86_64_NVIDIA = "/aws/service/bottlerocket/aws-k8s-${local.ssm_cluster_version}-nvidia/x86_64/latest/image_id"
WINDOWS_CORE_2019_x86_64 = "/aws/service/ami-windows-latest/Windows_Server-2019-English-Full-EKS_Optimized-${local.ssm_cluster_version}/image_id"
WINDOWS_FULL_2019_x86_64 = "/aws/service/ami-windows-latest/Windows_Server-2019-English-Core-EKS_Optimized-${local.ssm_cluster_version}/image_id"
WINDOWS_CORE_2022_x86_64 = "/aws/service/ami-windows-latest/Windows_Server-2022-English-Full-EKS_Optimized-${local.ssm_cluster_version}/image_id"
WINDOWS_FULL_2022_x86_64 = "/aws/service/ami-windows-latest/Windows_Server-2022-English-Core-EKS_Optimized-${local.ssm_cluster_version}/image_id"
AL2023_x86_64_STANDARD = "/aws/service/eks/optimized-ami/${local.ssm_cluster_version}/amazon-linux-2023/x86_64/standard/recommended/image_id"
AL2023_ARM_64_STANDARD = "/aws/service/eks/optimized-ami/${local.ssm_cluster_version}/amazon-linux-2023/arm64/standard/recommended/image_id"
AL2023_x86_64_NEURON = "/aws/service/eks/optimized-ami/${local.ssm_cluster_version}/amazon-linux-2023/x86_64/neuron/recommended/image_id"
AL2023_x86_64_NVIDIA = "/aws/service/eks/optimized-ami/${local.ssm_cluster_version}/amazon-linux-2023/x86_64/nvidia/recommended/image_id"
}
}
data "aws_ssm_parameter" "ami" {
count = var.create ? 1 : 0
name = local.ami_type_to_ssm_param[var.ami_type]
}
################################################################################
# User Data
################################################################################
module "user_data" {
source = "../_user_data"
create = var.create
platform = local.user_data_type
ami_type = var.ami_type
is_eks_managed_node_group = false
cluster_name = var.cluster_name
cluster_endpoint = var.cluster_endpoint
cluster_auth_base64 = var.cluster_auth_base64
cluster_ip_family = var.cluster_ip_family
cluster_service_cidr = var.cluster_service_cidr
additional_cluster_dns_ips = var.additional_cluster_dns_ips
enable_bootstrap_user_data = true
pre_bootstrap_user_data = var.pre_bootstrap_user_data
post_bootstrap_user_data = var.post_bootstrap_user_data
bootstrap_extra_args = var.bootstrap_extra_args
user_data_template_path = var.user_data_template_path
cloudinit_pre_nodeadm = var.cloudinit_pre_nodeadm
cloudinit_post_nodeadm = var.cloudinit_post_nodeadm
}
################################################################################
# EFA Support
################################################################################
data "aws_ec2_instance_type" "this" {
count = local.enable_efa_support ? 1 : 0
instance_type = var.instance_type
}
locals {
enable_efa_support = var.create && var.enable_efa_support && local.instance_type_provided
instance_type_provided = var.instance_type != ""
num_network_cards = try(data.aws_ec2_instance_type.this[0].maximum_network_cards, 0)
efa_network_interfaces = [
for i in range(local.num_network_cards) : {
associate_public_ip_address = false
delete_on_termination = true
device_index = i == 0 ? 0 : 1
network_card_index = i
interface_type = "efa"
}
]
network_interfaces = local.enable_efa_support ? local.efa_network_interfaces : var.network_interfaces
}
################################################################################
# Launch template
################################################################################
locals {
launch_template_name = coalesce(var.launch_template_name, "${var.name}-node-group")
security_group_ids = compact(concat([var.cluster_primary_security_group_id], var.vpc_security_group_ids))
placement = local.enable_efa_support ? { group_name = aws_placement_group.this[0].name } : var.placement
}
resource "aws_launch_template" "this" {
count = var.create && var.create_launch_template ? 1 : 0
dynamic "block_device_mappings" {
for_each = var.block_device_mappings
content {
device_name = try(block_device_mappings.value.device_name, null)
dynamic "ebs" {
for_each = try([block_device_mappings.value.ebs], [])
content {
delete_on_termination = try(ebs.value.delete_on_termination, null)
encrypted = try(ebs.value.encrypted, null)
iops = try(ebs.value.iops, null)
kms_key_id = try(ebs.value.kms_key_id, null)
snapshot_id = try(ebs.value.snapshot_id, null)
throughput = try(ebs.value.throughput, null)
volume_size = try(ebs.value.volume_size, null)
volume_type = try(ebs.value.volume_type, null)
}
}
no_device = try(block_device_mappings.value.no_device, null)
virtual_name = try(block_device_mappings.value.virtual_name, null)
}
}
dynamic "capacity_reservation_specification" {
for_each = length(var.capacity_reservation_specification) > 0 ? [var.capacity_reservation_specification] : []
content {
capacity_reservation_preference = try(capacity_reservation_specification.value.capacity_reservation_preference, null)
dynamic "capacity_reservation_target" {
for_each = try([capacity_reservation_specification.value.capacity_reservation_target], [])
content {
capacity_reservation_id = try(capacity_reservation_target.value.capacity_reservation_id, null)
capacity_reservation_resource_group_arn = try(capacity_reservation_target.value.capacity_reservation_resource_group_arn, null)
}
}
}
}
dynamic "cpu_options" {
for_each = length(var.cpu_options) > 0 ? [var.cpu_options] : []
content {
core_count = try(cpu_options.value.core_count, null)
threads_per_core = try(cpu_options.value.threads_per_core, null)
}
}
dynamic "credit_specification" {
for_each = length(var.credit_specification) > 0 ? [var.credit_specification] : []
content {
cpu_credits = try(credit_specification.value.cpu_credits, null)
}
}
default_version = var.launch_template_default_version
description = var.launch_template_description
disable_api_termination = var.disable_api_termination
ebs_optimized = var.ebs_optimized
dynamic "elastic_gpu_specifications" {
for_each = var.elastic_gpu_specifications
content {
type = elastic_gpu_specifications.value.type
}
}
dynamic "elastic_inference_accelerator" {
for_each = length(var.elastic_inference_accelerator) > 0 ? [var.elastic_inference_accelerator] : []
content {
type = elastic_inference_accelerator.value.type
}
}
dynamic "enclave_options" {
for_each = length(var.enclave_options) > 0 ? [var.enclave_options] : []
content {
enabled = enclave_options.value.enabled
}
}
dynamic "hibernation_options" {
for_each = length(var.hibernation_options) > 0 ? [var.hibernation_options] : []
content {
configured = hibernation_options.value.configured
}
}
iam_instance_profile {
arn = var.create_iam_instance_profile ? aws_iam_instance_profile.this[0].arn : var.iam_instance_profile_arn
}
image_id = coalesce(var.ami_id, nonsensitive(data.aws_ssm_parameter.ami[0].value))
instance_initiated_shutdown_behavior = var.instance_initiated_shutdown_behavior
dynamic "instance_market_options" {
for_each = length(var.instance_market_options) > 0 ? [var.instance_market_options] : []
content {
market_type = try(instance_market_options.value.market_type, null)
dynamic "spot_options" {
for_each = try([instance_market_options.value.spot_options], [])
content {
block_duration_minutes = try(spot_options.value.block_duration_minutes, null)
instance_interruption_behavior = try(spot_options.value.instance_interruption_behavior, null)
max_price = try(spot_options.value.max_price, null)
spot_instance_type = try(spot_options.value.spot_instance_type, null)
valid_until = try(spot_options.value.valid_until, null)
}
}
}
}
dynamic "instance_requirements" {
for_each = length(var.instance_requirements) > 0 ? [var.instance_requirements] : []
content {
dynamic "accelerator_count" {
for_each = try([instance_requirements.value.accelerator_count], [])
content {
max = try(accelerator_count.value.max, null)
min = try(accelerator_count.value.min, null)
}
}
accelerator_manufacturers = try(instance_requirements.value.accelerator_manufacturers, [])
accelerator_names = try(instance_requirements.value.accelerator_names, [])
dynamic "accelerator_total_memory_mib" {
for_each = try([instance_requirements.value.accelerator_total_memory_mib], [])
content {
max = try(accelerator_total_memory_mib.value.max, null)
min = try(accelerator_total_memory_mib.value.min, null)
}
}
accelerator_types = try(instance_requirements.value.accelerator_types, [])
allowed_instance_types = try(instance_requirements.value.allowed_instance_types, null)
bare_metal = try(instance_requirements.value.bare_metal, null)
dynamic "baseline_ebs_bandwidth_mbps" {
for_each = try([instance_requirements.value.baseline_ebs_bandwidth_mbps], [])
content {
max = try(baseline_ebs_bandwidth_mbps.value.max, null)
min = try(baseline_ebs_bandwidth_mbps.value.min, null)
}
}
burstable_performance = try(instance_requirements.value.burstable_performance, null)
cpu_manufacturers = try(instance_requirements.value.cpu_manufacturers, [])
excluded_instance_types = try(instance_requirements.value.excluded_instance_types, null)
instance_generations = try(instance_requirements.value.instance_generations, [])
local_storage = try(instance_requirements.value.local_storage, null)
local_storage_types = try(instance_requirements.value.local_storage_types, [])
dynamic "memory_gib_per_vcpu" {
for_each = try([instance_requirements.value.memory_gib_per_vcpu], [])
content {
max = try(memory_gib_per_vcpu.value.max, null)
min = try(memory_gib_per_vcpu.value.min, null)
}
}
dynamic "memory_mib" {
for_each = [instance_requirements.value.memory_mib]
content {
max = try(memory_mib.value.max, null)
min = memory_mib.value.min
}
}
dynamic "network_bandwidth_gbps" {
for_each = try([instance_requirements.value.network_bandwidth_gbps], [])
content {
max = try(network_bandwidth_gbps.value.max, null)
min = try(network_bandwidth_gbps.value.min, null)
}
}
dynamic "network_interface_count" {
for_each = try([instance_requirements.value.network_interface_count], [])
content {
max = try(network_interface_count.value.max, null)
min = try(network_interface_count.value.min, null)
}
}
on_demand_max_price_percentage_over_lowest_price = try(instance_requirements.value.on_demand_max_price_percentage_over_lowest_price, null)
require_hibernate_support = try(instance_requirements.value.require_hibernate_support, null)
spot_max_price_percentage_over_lowest_price = try(instance_requirements.value.spot_max_price_percentage_over_lowest_price, null)
dynamic "total_local_storage_gb" {
for_each = try([instance_requirements.value.total_local_storage_gb], [])
content {
max = try(total_local_storage_gb.value.max, null)
min = try(total_local_storage_gb.value.min, null)
}
}
dynamic "vcpu_count" {
for_each = [instance_requirements.value.vcpu_count]
content {
max = try(vcpu_count.value.max, null)
min = vcpu_count.value.min
}
}
}
}
instance_type = var.instance_type
kernel_id = var.kernel_id
key_name = var.key_name
dynamic "license_specification" {
for_each = length(var.license_specifications) > 0 ? var.license_specifications : {}
content {
license_configuration_arn = license_specification.value.license_configuration_arn
}
}
dynamic "maintenance_options" {
for_each = length(var.maintenance_options) > 0 ? [var.maintenance_options] : []
content {
auto_recovery = try(maintenance_options.value.auto_recovery, null)
}
}
dynamic "metadata_options" {
for_each = length(var.metadata_options) > 0 ? [var.metadata_options] : []
content {
http_endpoint = try(metadata_options.value.http_endpoint, null)
http_protocol_ipv6 = try(metadata_options.value.http_protocol_ipv6, null)
http_put_response_hop_limit = try(metadata_options.value.http_put_response_hop_limit, null)
http_tokens = try(metadata_options.value.http_tokens, null)
instance_metadata_tags = try(metadata_options.value.instance_metadata_tags, null)
}
}
dynamic "monitoring" {
for_each = var.enable_monitoring ? [1] : []
content {
enabled = var.enable_monitoring
}
}
name = var.launch_template_use_name_prefix ? null : local.launch_template_name
name_prefix = var.launch_template_use_name_prefix ? "${local.launch_template_name}-" : null
dynamic "network_interfaces" {
for_each = local.network_interfaces
content {
associate_carrier_ip_address = try(network_interfaces.value.associate_carrier_ip_address, null)
associate_public_ip_address = try(network_interfaces.value.associate_public_ip_address, null)
delete_on_termination = try(network_interfaces.value.delete_on_termination, null)
description = try(network_interfaces.value.description, null)
device_index = try(network_interfaces.value.device_index, null)
interface_type = try(network_interfaces.value.interface_type, null)
ipv4_address_count = try(network_interfaces.value.ipv4_address_count, null)
ipv4_addresses = try(network_interfaces.value.ipv4_addresses, [])
ipv4_prefix_count = try(network_interfaces.value.ipv4_prefix_count, null)
ipv4_prefixes = try(network_interfaces.value.ipv4_prefixes, null)
ipv6_address_count = try(network_interfaces.value.ipv6_address_count, null)
ipv6_addresses = try(network_interfaces.value.ipv6_addresses, [])
ipv6_prefix_count = try(network_interfaces.value.ipv6_prefix_count, null)
ipv6_prefixes = try(network_interfaces.value.ipv6_prefixes, [])
network_card_index = try(network_interfaces.value.network_card_index, null)
network_interface_id = try(network_interfaces.value.network_interface_id, null)
primary_ipv6 = try(network_interfaces.value.primary_ipv6, null)
private_ip_address = try(network_interfaces.value.private_ip_address, null)
# Ref: https://github.com/hashicorp/terraform-provider-aws/issues/4570
security_groups = compact(concat(try(network_interfaces.value.security_groups, []), local.security_group_ids))
subnet_id = try(network_interfaces.value.subnet_id, null)
}
}
dynamic "placement" {
for_each = length(local.placement) > 0 ? [local.placement] : []
content {
affinity = try(placement.value.affinity, null)
availability_zone = lookup(placement.value, "availability_zone", null)
group_name = lookup(placement.value, "group_name", null)
host_id = lookup(placement.value, "host_id", null)
host_resource_group_arn = lookup(placement.value, "host_resource_group_arn", null)
partition_number = try(placement.value.partition_number, null)
spread_domain = try(placement.value.spread_domain, null)
tenancy = try(placement.value.tenancy, null)
}
}
dynamic "private_dns_name_options" {
for_each = length(var.private_dns_name_options) > 0 ? [var.private_dns_name_options] : []
content {
enable_resource_name_dns_aaaa_record = try(private_dns_name_options.value.enable_resource_name_dns_aaaa_record, null)
enable_resource_name_dns_a_record = try(private_dns_name_options.value.enable_resource_name_dns_a_record, null)
hostname_type = try(private_dns_name_options.value.hostname_type, null)
}
}
ram_disk_id = var.ram_disk_id
dynamic "tag_specifications" {
for_each = toset(var.tag_specifications)
content {
resource_type = tag_specifications.key
tags = merge(var.tags, { Name = var.name }, var.launch_template_tags)
}
}
update_default_version = var.update_launch_template_default_version
user_data = module.user_data.user_data
vpc_security_group_ids = length(local.network_interfaces) > 0 ? [] : local.security_group_ids
tags = var.tags
# Prevent premature access of policies by pods that
# require permissions on create/destroy that depend on nodes
depends_on = [
aws_iam_role_policy_attachment.this,
aws_iam_role_policy_attachment.additional,
]
lifecycle {
create_before_destroy = true
}
}
################################################################################
# Node Group
################################################################################
locals {
launch_template_id = var.create && var.create_launch_template ? aws_launch_template.this[0].id : var.launch_template_id
# Change order to allow users to set version priority before using defaults
launch_template_version = coalesce(var.launch_template_version, try(aws_launch_template.this[0].default_version, "$Default"))
}
resource "aws_autoscaling_group" "this" {
count = var.create && var.create_autoscaling_group ? 1 : 0
availability_zones = var.availability_zones
capacity_rebalance = var.capacity_rebalance
context = var.context
default_cooldown = var.default_cooldown
default_instance_warmup = var.default_instance_warmup
desired_capacity = var.desired_size
desired_capacity_type = var.desired_size_type
enabled_metrics = var.enabled_metrics
force_delete = var.force_delete
force_delete_warm_pool = var.force_delete_warm_pool
health_check_grace_period = var.health_check_grace_period
health_check_type = var.health_check_type
dynamic "initial_lifecycle_hook" {
for_each = var.initial_lifecycle_hooks
content {
default_result = try(initial_lifecycle_hook.value.default_result, null)
heartbeat_timeout = try(initial_lifecycle_hook.value.heartbeat_timeout, null)
lifecycle_transition = initial_lifecycle_hook.value.lifecycle_transition
name = initial_lifecycle_hook.value.name
notification_metadata = try(initial_lifecycle_hook.value.notification_metadata, null)
notification_target_arn = try(initial_lifecycle_hook.value.notification_target_arn, null)
role_arn = try(initial_lifecycle_hook.value.role_arn, null)
}
}
dynamic "instance_maintenance_policy" {
for_each = length(var.instance_maintenance_policy) > 0 ? [var.instance_maintenance_policy] : []
content {
min_healthy_percentage = instance_maintenance_policy.value.min_healthy_percentage
max_healthy_percentage = instance_maintenance_policy.value.max_healthy_percentage
}
}
dynamic "instance_refresh" {
for_each = length(var.instance_refresh) > 0 ? [var.instance_refresh] : []
content {
dynamic "preferences" {
for_each = try([instance_refresh.value.preferences], [])
content {
checkpoint_delay = try(preferences.value.checkpoint_delay, null)
checkpoint_percentages = try(preferences.value.checkpoint_percentages, null)
instance_warmup = try(preferences.value.instance_warmup, null)
max_healthy_percentage = try(preferences.value.max_healthy_percentage, null)
min_healthy_percentage = try(preferences.value.min_healthy_percentage, null)
scale_in_protected_instances = try(preferences.value.scale_in_protected_instances, null)
skip_matching = try(preferences.value.skip_matching, null)
standby_instances = try(preferences.value.standby_instances, null)
}
}
strategy = instance_refresh.value.strategy
triggers = try(instance_refresh.value.triggers, null)
}
}
dynamic "launch_template" {
for_each = var.use_mixed_instances_policy ? [] : [1]
content {
id = local.launch_template_id
version = local.launch_template_version
}
}
max_instance_lifetime = var.max_instance_lifetime
max_size = var.max_size
metrics_granularity = var.metrics_granularity
min_elb_capacity = var.min_elb_capacity
min_size = var.min_size
ignore_failed_scaling_activities = var.ignore_failed_scaling_activities
dynamic "mixed_instances_policy" {
for_each = var.use_mixed_instances_policy ? [var.mixed_instances_policy] : []
content {
dynamic "instances_distribution" {
for_each = try([mixed_instances_policy.value.instances_distribution], [])
content {
on_demand_allocation_strategy = try(instances_distribution.value.on_demand_allocation_strategy, null)
on_demand_base_capacity = try(instances_distribution.value.on_demand_base_capacity, null)
on_demand_percentage_above_base_capacity = try(instances_distribution.value.on_demand_percentage_above_base_capacity, null)
spot_allocation_strategy = try(instances_distribution.value.spot_allocation_strategy, null)
spot_instance_pools = try(instances_distribution.value.spot_instance_pools, null)
spot_max_price = try(instances_distribution.value.spot_max_price, null)
}
}
launch_template {
launch_template_specification {
launch_template_id = local.launch_template_id
version = local.launch_template_version
}
dynamic "override" {
for_each = try(mixed_instances_policy.value.override, [])
content {
dynamic "instance_requirements" {
for_each = try([override.value.instance_requirements], [])
content {
dynamic "accelerator_count" {
for_each = try([instance_requirements.value.accelerator_count], [])
content {
max = try(accelerator_count.value.max, null)
min = try(accelerator_count.value.min, null)
}
}
accelerator_manufacturers = try(instance_requirements.value.accelerator_manufacturers, [])
accelerator_names = try(instance_requirements.value.accelerator_names, [])
dynamic "accelerator_total_memory_mib" {
for_each = try([instance_requirements.value.accelerator_total_memory_mib], [])
content {
max = try(accelerator_total_memory_mib.value.max, null)
min = try(accelerator_total_memory_mib.value.min, null)
}
}
accelerator_types = try(instance_requirements.value.accelerator_types, [])
allowed_instance_types = try(instance_requirements.value.allowed_instance_types, null)
bare_metal = try(instance_requirements.value.bare_metal, null)
dynamic "baseline_ebs_bandwidth_mbps" {
for_each = try([instance_requirements.value.baseline_ebs_bandwidth_mbps], [])
content {
max = try(baseline_ebs_bandwidth_mbps.value.max, null)
min = try(baseline_ebs_bandwidth_mbps.value.min, null)
}
}
burstable_performance = try(instance_requirements.value.burstable_performance, null)
cpu_manufacturers = try(instance_requirements.value.cpu_manufacturers, [])
excluded_instance_types = try(instance_requirements.value.excluded_instance_types, [])
instance_generations = try(instance_requirements.value.instance_generations, [])
local_storage = try(instance_requirements.value.local_storage, null)
local_storage_types = try(instance_requirements.value.local_storage_types, [])
dynamic "memory_gib_per_vcpu" {
for_each = try([instance_requirements.value.memory_gib_per_vcpu], [])
content {
max = try(memory_gib_per_vcpu.value.max, null)
min = try(memory_gib_per_vcpu.value.min, null)
}
}
dynamic "memory_mib" {
for_each = [instance_requirements.value.memory_mib]
content {
max = try(memory_mib.value.max, null)
min = memory_mib.value.min
}
}
dynamic "network_interface_count" {
for_each = try([instance_requirements.value.network_interface_count], [])
content {
max = try(network_interface_count.value.max, null)
min = try(network_interface_count.value.min, null)
}
}
on_demand_max_price_percentage_over_lowest_price = try(instance_requirements.value.on_demand_max_price_percentage_over_lowest_price, null)
require_hibernate_support = try(instance_requirements.value.require_hibernate_support, null)
spot_max_price_percentage_over_lowest_price = try(instance_requirements.value.spot_max_price_percentage_over_lowest_price, null)
dynamic "total_local_storage_gb" {
for_each = try([instance_requirements.value.total_local_storage_gb], [])
content {
max = try(total_local_storage_gb.value.max, null)
min = try(total_local_storage_gb.value.min, null)
}
}
dynamic "vcpu_count" {
for_each = [instance_requirements.value.vcpu_count]
content {
max = try(vcpu_count.value.max, null)
min = vcpu_count.value.min
}
}
}
}
instance_type = try(override.value.instance_type, null)
dynamic "launch_template_specification" {
for_each = try([override.value.launch_template_specification], [])
content {
launch_template_id = try(launch_template_specification.value.launch_template_id, null)
version = try(launch_template_specification.value.version, null)
}
}
weighted_capacity = try(override.value.weighted_capacity, null)
}
}
}
}
}
name = var.use_name_prefix ? null : var.name
name_prefix = var.use_name_prefix ? "${var.name}-" : null
placement_group = var.placement_group
protect_from_scale_in = var.protect_from_scale_in
service_linked_role_arn = var.service_linked_role_arn
suspended_processes = var.suspended_processes
dynamic "tag" {
for_each = merge(
{
"Name" = var.name
"kubernetes.io/cluster/${var.cluster_name}" = "owned"
"k8s.io/cluster/${var.cluster_name}" = "owned"
},
var.tags
)
content {
key = tag.key
value = tag.value
propagate_at_launch = true
}
}
dynamic "tag" {
for_each = var.autoscaling_group_tags
content {
key = tag.key
value = tag.value
propagate_at_launch = false
}
}
target_group_arns = var.target_group_arns
termination_policies = var.termination_policies
vpc_zone_identifier = local.enable_efa_support ? data.aws_subnets.placement_group[0].ids : var.subnet_ids
wait_for_capacity_timeout = var.wait_for_capacity_timeout
wait_for_elb_capacity = var.wait_for_elb_capacity
dynamic "warm_pool" {
for_each = length(var.warm_pool) > 0 ? [var.warm_pool] : []
content {
dynamic "instance_reuse_policy" {
for_each = try([warm_pool.value.instance_reuse_policy], [])
content {
reuse_on_scale_in = try(instance_reuse_policy.value.reuse_on_scale_in, null)
}
}
max_group_prepared_capacity = try(warm_pool.value.max_group_prepared_capacity, null)
min_size = try(warm_pool.value.min_size, null)
pool_state = try(warm_pool.value.pool_state, null)
}
}
timeouts {
delete = var.delete_timeout
}
lifecycle {
create_before_destroy = true
ignore_changes = [
desired_capacity
]
}
}
################################################################################
# IAM Role
################################################################################
locals {
create_iam_instance_profile = var.create && var.create_iam_instance_profile
iam_role_name = coalesce(var.iam_role_name, "${var.name}-node-group")
iam_role_policy_prefix = "arn:${data.aws_partition.current.partition}:iam::aws:policy"
ipv4_cni_policy = { for k, v in {
AmazonEKS_CNI_Policy = "${local.iam_role_policy_prefix}/AmazonEKS_CNI_Policy"
} : k => v if var.iam_role_attach_cni_policy && var.cluster_ip_family == "ipv4" }
ipv6_cni_policy = { for k, v in {
AmazonEKS_CNI_IPv6_Policy = "arn:${data.aws_partition.current.partition}:iam::${data.aws_caller_identity.current.account_id}:policy/AmazonEKS_CNI_IPv6_Policy"
} : k => v if var.iam_role_attach_cni_policy && var.cluster_ip_family == "ipv6" }
}
data "aws_iam_policy_document" "assume_role_policy" {
count = local.create_iam_instance_profile ? 1 : 0
statement {
sid = "EKSNodeAssumeRole"
actions = ["sts:AssumeRole"]
principals {
type = "Service"
identifiers = ["ec2.amazonaws.com"]
}
}
}
resource "aws_iam_role" "this" {
count = local.create_iam_instance_profile ? 1 : 0
name = var.iam_role_use_name_prefix ? null : local.iam_role_name
name_prefix = var.iam_role_use_name_prefix ? "${local.iam_role_name}-" : null
path = var.iam_role_path
description = var.iam_role_description
assume_role_policy = data.aws_iam_policy_document.assume_role_policy[0].json
permissions_boundary = var.iam_role_permissions_boundary
force_detach_policies = true
tags = merge(var.tags, var.iam_role_tags)
}
# Policies attached ref https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/eks_node_group
resource "aws_iam_role_policy_attachment" "this" {
for_each = { for k, v in merge(
{
AmazonEKSWorkerNodePolicy = "${local.iam_role_policy_prefix}/AmazonEKSWorkerNodePolicy"
AmazonEC2ContainerRegistryReadOnly = "${local.iam_role_policy_prefix}/AmazonEC2ContainerRegistryReadOnly"
},
local.ipv4_cni_policy,
local.ipv6_cni_policy
) : k => v if local.create_iam_instance_profile }
policy_arn = each.value
role = aws_iam_role.this[0].name
}
resource "aws_iam_role_policy_attachment" "additional" {
for_each = { for k, v in var.iam_role_additional_policies : k => v if local.create_iam_instance_profile }
policy_arn = each.value
role = aws_iam_role.this[0].name
}
resource "aws_iam_instance_profile" "this" {
count = local.create_iam_instance_profile ? 1 : 0
role = aws_iam_role.this[0].name
name = var.iam_role_use_name_prefix ? null : local.iam_role_name
name_prefix = var.iam_role_use_name_prefix ? "${local.iam_role_name}-" : null
path = var.iam_role_path
tags = merge(var.tags, var.iam_role_tags)
lifecycle {
create_before_destroy = true
}
}
################################################################################
# IAM Role Policy
################################################################################
locals {
create_iam_role_policy = local.create_iam_instance_profile && var.create_iam_role_policy && length(var.iam_role_policy_statements) > 0
}
data "aws_iam_policy_document" "role" {
count = local.create_iam_role_policy ? 1 : 0
dynamic "statement" {
for_each = var.iam_role_policy_statements
content {
sid = try(statement.value.sid, null)
actions = try(statement.value.actions, null)
not_actions = try(statement.value.not_actions, null)
effect = try(statement.value.effect, null)
resources = try(statement.value.resources, null)
not_resources = try(statement.value.not_resources, null)
dynamic "principals" {
for_each = try(statement.value.principals, [])
content {
type = principals.value.type
identifiers = principals.value.identifiers
}
}
dynamic "not_principals" {
for_each = try(statement.value.not_principals, [])
content {
type = not_principals.value.type
identifiers = not_principals.value.identifiers
}
}
dynamic "condition" {
for_each = try(statement.value.conditions, [])
content {
test = condition.value.test
values = condition.value.values
variable = condition.value.variable
}
}
}
}
}
resource "aws_iam_role_policy" "this" {
count = local.create_iam_role_policy ? 1 : 0
name = var.iam_role_use_name_prefix ? null : local.iam_role_name
name_prefix = var.iam_role_use_name_prefix ? "${local.iam_role_name}-" : null
policy = data.aws_iam_policy_document.role[0].json
role = aws_iam_role.this[0].id
}
################################################################################
# Placement Group
################################################################################
locals {
create_placement_group = var.create && (local.enable_efa_support || var.create_placement_group)
}
resource "aws_placement_group" "this" {
count = local.create_placement_group ? 1 : 0
name = "${var.cluster_name}-${var.name}"
strategy = "cluster"
tags = var.tags
}
################################################################################
# Instance AZ Lookup
# Instances usually used in placement groups w/ EFA are only available in
# select availability zones. These data sources will cross reference the availability
# zones supported by the instance type with the subnets provided to ensure only
# AZs/subnets that are supported are used.
################################################################################
# Find the availability zones supported by the instance type
# TODO - remove at next breaking change
# Force users to be explicit about which AZ to use when using placement groups,
# with or without EFA support
data "aws_ec2_instance_type_offerings" "this" {
count = local.enable_efa_support ? 1 : 0
filter {
name = "instance-type"
values = [var.instance_type]
}
location_type = "availability-zone-id"
}
# Reverse the lookup to find one of the subnets provided based on the availability
# availability zone ID of the queried instance type (supported)
data "aws_subnets" "placement_group" {
count = local.create_placement_group ? 1 : 0
filter {
name = "subnet-id"
values = var.subnet_ids
}
# The data source can lookup the first available AZ or you can specify an AZ (next filter)
dynamic "filter" {
for_each = local.create_placement_group && var.placement_group_az == null ? [1] : []
content {
name = "availability-zone-id"
values = data.aws_ec2_instance_type_offerings.this[0].locations
}
}
dynamic "filter" {
for_each = var.placement_group_az != null ? [var.placement_group_az] : []
content {
name = "availability-zone"