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terraform-aws-eks/main.tf

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data "aws_partition" "current" {
count = local.create ? 1 : 0
}
data "aws_caller_identity" "current" {
count = local.create ? 1 : 0
}
data "aws_iam_session_context" "current" {
count = local.create ? 1 : 0
# This data source provides information on the IAM source role of an STS assumed role
# For non-role ARNs, this data source simply passes the ARN through issuer ARN
# Ref https://github.com/terraform-aws-modules/terraform-aws-eks/issues/2327#issuecomment-1355581682
# Ref https://github.com/hashicorp/terraform-provider-aws/issues/28381
arn = try(data.aws_caller_identity.current[0].arn, "")
}
locals {
create = var.create && var.putin_khuylo
partition = try(data.aws_partition.current[0].partition, "")
cluster_role = try(aws_iam_role.this[0].arn, var.iam_role_arn)
create_outposts_local_cluster = length(var.outpost_config) > 0
enable_cluster_encryption_config = length(var.cluster_encryption_config) > 0 && !local.create_outposts_local_cluster
auto_mode_enabled = try(var.cluster_compute_config.enabled, false)
}
################################################################################
# Cluster
################################################################################
resource "aws_eks_cluster" "this" {
count = local.create ? 1 : 0
name = var.cluster_name
role_arn = local.cluster_role
version = var.cluster_version
enabled_cluster_log_types = var.cluster_enabled_log_types
bootstrap_self_managed_addons = local.auto_mode_enabled ? coalesce(var.bootstrap_self_managed_addons, false) : var.bootstrap_self_managed_addons
force_update_version = var.cluster_force_update_version
access_config {
authentication_mode = var.authentication_mode
# See access entries below - this is a one time operation from the EKS API.
# Instead, we are hardcoding this to false and if users wish to achieve this
# same functionality, we will do that through an access entry which can be
# enabled or disabled at any time of their choosing using the variable
# var.enable_cluster_creator_admin_permissions
bootstrap_cluster_creator_admin_permissions = false
}
dynamic "compute_config" {
for_each = length(var.cluster_compute_config) > 0 ? [var.cluster_compute_config] : []
content {
enabled = local.auto_mode_enabled
node_pools = local.auto_mode_enabled ? try(compute_config.value.node_pools, []) : null
node_role_arn = local.auto_mode_enabled && length(try(compute_config.value.node_pools, [])) > 0 ? try(compute_config.value.node_role_arn, aws_iam_role.eks_auto[0].arn, null) : null
}
}
vpc_config {
security_group_ids = compact(distinct(concat(var.cluster_additional_security_group_ids, [local.cluster_security_group_id])))
subnet_ids = coalescelist(var.control_plane_subnet_ids, var.subnet_ids)
endpoint_private_access = var.cluster_endpoint_private_access
endpoint_public_access = var.cluster_endpoint_public_access
public_access_cidrs = var.cluster_endpoint_public_access_cidrs
}
dynamic "kubernetes_network_config" {
# Not valid on Outposts
for_each = local.create_outposts_local_cluster ? [] : [1]
content {
dynamic "elastic_load_balancing" {
for_each = local.auto_mode_enabled ? [1] : []
content {
enabled = local.auto_mode_enabled
}
}
ip_family = var.cluster_ip_family
service_ipv4_cidr = var.cluster_service_ipv4_cidr
service_ipv6_cidr = var.cluster_service_ipv6_cidr
}
}
dynamic "outpost_config" {
for_each = local.create_outposts_local_cluster ? [var.outpost_config] : []
content {
control_plane_instance_type = outpost_config.value.control_plane_instance_type
outpost_arns = outpost_config.value.outpost_arns
}
}
dynamic "encryption_config" {
# Not available on Outposts
for_each = local.enable_cluster_encryption_config ? [var.cluster_encryption_config] : []
content {
provider {
key_arn = var.create_kms_key ? module.kms.key_arn : encryption_config.value.provider_key_arn
}
resources = encryption_config.value.resources
}
}
dynamic "remote_network_config" {
# Not valid on Outposts
for_each = length(var.cluster_remote_network_config) > 0 && !local.create_outposts_local_cluster ? [var.cluster_remote_network_config] : []
content {
dynamic "remote_node_networks" {
for_each = [remote_network_config.value.remote_node_networks]
content {
cidrs = remote_node_networks.value.cidrs
}
}
dynamic "remote_pod_networks" {
for_each = try([remote_network_config.value.remote_pod_networks], [])
content {
cidrs = remote_pod_networks.value.cidrs
}
}
}
}
dynamic "storage_config" {
for_each = local.auto_mode_enabled ? [1] : []
content {
block_storage {
enabled = local.auto_mode_enabled
}
}
}
dynamic "upgrade_policy" {
for_each = length(var.cluster_upgrade_policy) > 0 ? [var.cluster_upgrade_policy] : []
content {
support_type = try(upgrade_policy.value.support_type, null)
}
}
dynamic "zonal_shift_config" {
for_each = length(var.cluster_zonal_shift_config) > 0 ? [var.cluster_zonal_shift_config] : []
content {
enabled = try(zonal_shift_config.value.enabled, null)
}
}
tags = merge(
{ terraform-aws-modules = "eks" },
var.tags,
var.cluster_tags,
)
timeouts {
create = try(var.cluster_timeouts.create, null)
update = try(var.cluster_timeouts.update, null)
delete = try(var.cluster_timeouts.delete, null)
}
depends_on = [
aws_iam_role_policy_attachment.this,
aws_security_group_rule.cluster,
aws_security_group_rule.node,
aws_cloudwatch_log_group.this,
aws_iam_policy.cni_ipv6_policy,
]
lifecycle {
ignore_changes = [
access_config[0].bootstrap_cluster_creator_admin_permissions
]
}
}
resource "aws_ec2_tag" "cluster_primary_security_group" {
# This should not affect the name of the cluster primary security group
# Ref: https://github.com/terraform-aws-modules/terraform-aws-eks/pull/2006
# Ref: https://github.com/terraform-aws-modules/terraform-aws-eks/pull/2008
for_each = { for k, v in merge(var.tags, var.cluster_tags) :
k => v if local.create && k != "Name" && var.create_cluster_primary_security_group_tags
}
resource_id = aws_eks_cluster.this[0].vpc_config[0].cluster_security_group_id
key = each.key
value = each.value
}
resource "aws_cloudwatch_log_group" "this" {
count = local.create && var.create_cloudwatch_log_group ? 1 : 0
name = "/aws/eks/${var.cluster_name}/cluster"
retention_in_days = var.cloudwatch_log_group_retention_in_days
kms_key_id = var.cloudwatch_log_group_kms_key_id
log_group_class = var.cloudwatch_log_group_class
tags = merge(
var.tags,
var.cloudwatch_log_group_tags,
{ Name = "/aws/eks/${var.cluster_name}/cluster" }
)
}
################################################################################
# Access Entry
################################################################################
locals {
# This replaces the one time logic from the EKS API with something that can be
# better controlled by users through Terraform
bootstrap_cluster_creator_admin_permissions = {
cluster_creator = {
principal_arn = try(data.aws_iam_session_context.current[0].issuer_arn, "")
type = "STANDARD"
policy_associations = {
admin = {
policy_arn = "arn:${local.partition}:eks::aws:cluster-access-policy/AmazonEKSClusterAdminPolicy"
access_scope = {
type = "cluster"
}
}
}
}
}
# Merge the bootstrap behavior with the entries that users provide
merged_access_entries = merge(
{ for k, v in local.bootstrap_cluster_creator_admin_permissions : k => v if var.enable_cluster_creator_admin_permissions },
var.access_entries,
)
# Flatten out entries and policy associations so users can specify the policy
# associations within a single entry
flattened_access_entries = flatten([
for entry_key, entry_val in local.merged_access_entries : [
for pol_key, pol_val in lookup(entry_val, "policy_associations", {}) :
merge(
{
principal_arn = entry_val.principal_arn
entry_key = entry_key
pol_key = pol_key
},
{ for k, v in {
association_policy_arn = pol_val.policy_arn
association_access_scope_type = pol_val.access_scope.type
association_access_scope_namespaces = lookup(pol_val.access_scope, "namespaces", [])
} : k => v if !contains(["EC2_LINUX", "EC2_WINDOWS", "FARGATE_LINUX", "HYBRID_LINUX"], lookup(entry_val, "type", "STANDARD")) },
)
]
])
}
resource "aws_eks_access_entry" "this" {
for_each = { for k, v in local.merged_access_entries : k => v if local.create }
cluster_name = aws_eks_cluster.this[0].id
kubernetes_groups = try(each.value.kubernetes_groups, null)
principal_arn = each.value.principal_arn
type = try(each.value.type, "STANDARD")
user_name = try(each.value.user_name, null)
tags = merge(var.tags, try(each.value.tags, {}))
}
resource "aws_eks_access_policy_association" "this" {
for_each = { for k, v in local.flattened_access_entries : "${v.entry_key}_${v.pol_key}" => v if local.create }
access_scope {
namespaces = try(each.value.association_access_scope_namespaces, [])
type = each.value.association_access_scope_type
}
cluster_name = aws_eks_cluster.this[0].id
policy_arn = each.value.association_policy_arn
principal_arn = each.value.principal_arn
depends_on = [
aws_eks_access_entry.this,
]
}
################################################################################
# KMS Key
################################################################################
module "kms" {
source = "terraform-aws-modules/kms/aws"
version = "2.1.0" # Note - be mindful of Terraform/provider version compatibility between modules
create = local.create && var.create_kms_key && local.enable_cluster_encryption_config # not valid on Outposts
description = coalesce(var.kms_key_description, "${var.cluster_name} cluster encryption key")
key_usage = "ENCRYPT_DECRYPT"
deletion_window_in_days = var.kms_key_deletion_window_in_days
enable_key_rotation = var.enable_kms_key_rotation
# Policy
enable_default_policy = var.kms_key_enable_default_policy
key_owners = var.kms_key_owners
key_administrators = coalescelist(var.kms_key_administrators, [try(data.aws_iam_session_context.current[0].issuer_arn, "")])
key_users = concat([local.cluster_role], var.kms_key_users)
key_service_users = var.kms_key_service_users
source_policy_documents = var.kms_key_source_policy_documents
override_policy_documents = var.kms_key_override_policy_documents
# Aliases
aliases = var.kms_key_aliases
computed_aliases = {
# Computed since users can pass in computed values for cluster name such as random provider resources
cluster = { name = "eks/${var.cluster_name}" }
}
tags = merge(
{ terraform-aws-modules = "eks" },
var.tags,
)
}
################################################################################
# Cluster Security Group
# Defaults follow https://docs.aws.amazon.com/eks/latest/userguide/sec-group-reqs.html
################################################################################
locals {
cluster_sg_name = coalesce(var.cluster_security_group_name, "${var.cluster_name}-cluster")
create_cluster_sg = local.create && var.create_cluster_security_group
cluster_security_group_id = local.create_cluster_sg ? aws_security_group.cluster[0].id : var.cluster_security_group_id
# Do not add rules to node security group if the module is not creating it
cluster_security_group_rules = { for k, v in {
ingress_nodes_443 = {
description = "Node groups to cluster API"
protocol = "tcp"
from_port = 443
to_port = 443
type = "ingress"
source_node_security_group = true
}
} : k => v if local.create_node_sg }
}
resource "aws_security_group" "cluster" {
count = local.create_cluster_sg ? 1 : 0
name = var.cluster_security_group_use_name_prefix ? null : local.cluster_sg_name
name_prefix = var.cluster_security_group_use_name_prefix ? "${local.cluster_sg_name}${var.prefix_separator}" : null
description = var.cluster_security_group_description
vpc_id = var.vpc_id
tags = merge(
var.tags,
{ "Name" = local.cluster_sg_name },
var.cluster_security_group_tags
)
lifecycle {
create_before_destroy = true
}
}
resource "aws_security_group_rule" "cluster" {
for_each = { for k, v in merge(
local.cluster_security_group_rules,
var.cluster_security_group_additional_rules
) : k => v if local.create_cluster_sg }
# Required
security_group_id = aws_security_group.cluster[0].id
protocol = each.value.protocol
from_port = each.value.from_port
to_port = each.value.to_port
type = each.value.type
# Optional
description = lookup(each.value, "description", null)
cidr_blocks = lookup(each.value, "cidr_blocks", null)
ipv6_cidr_blocks = lookup(each.value, "ipv6_cidr_blocks", null)
prefix_list_ids = lookup(each.value, "prefix_list_ids", null)
self = lookup(each.value, "self", null)
source_security_group_id = try(each.value.source_node_security_group, false) ? local.node_security_group_id : lookup(each.value, "source_security_group_id", null)
}
################################################################################
# IRSA
# Note - this is different from EKS identity provider
################################################################################
locals {
# Not available on outposts
create_oidc_provider = local.create && var.enable_irsa && !local.create_outposts_local_cluster
oidc_root_ca_thumbprint = local.create_oidc_provider && var.include_oidc_root_ca_thumbprint ? [data.tls_certificate.this[0].certificates[0].sha1_fingerprint] : []
}
data "tls_certificate" "this" {
# Not available on outposts
count = local.create_oidc_provider && var.include_oidc_root_ca_thumbprint ? 1 : 0
url = aws_eks_cluster.this[0].identity[0].oidc[0].issuer
}
resource "aws_iam_openid_connect_provider" "oidc_provider" {
# Not available on outposts
count = local.create_oidc_provider ? 1 : 0
client_id_list = distinct(compact(concat(["sts.amazonaws.com"], var.openid_connect_audiences)))
thumbprint_list = concat(local.oidc_root_ca_thumbprint, var.custom_oidc_thumbprints)
url = aws_eks_cluster.this[0].identity[0].oidc[0].issuer
tags = merge(
{ Name = "${var.cluster_name}-eks-irsa" },
var.tags
)
}
################################################################################
# IAM Role
################################################################################
locals {
create_iam_role = local.create && var.create_iam_role
iam_role_name = coalesce(var.iam_role_name, "${var.cluster_name}-cluster")
iam_role_policy_prefix = "arn:${local.partition}:iam::aws:policy"
cluster_encryption_policy_name = coalesce(var.cluster_encryption_policy_name, "${local.iam_role_name}-ClusterEncryption")
# Standard EKS cluster
eks_standard_iam_role_policies = { for k, v in {
AmazonEKSClusterPolicy = "${local.iam_role_policy_prefix}/AmazonEKSClusterPolicy",
} : k => v if !local.create_outposts_local_cluster && !local.auto_mode_enabled }
# EKS cluster with EKS auto mode enabled
eks_auto_mode_iam_role_policies = { for k, v in {
AmazonEKSClusterPolicy = "${local.iam_role_policy_prefix}/AmazonEKSClusterPolicy"
AmazonEKSComputePolicy = "${local.iam_role_policy_prefix}/AmazonEKSComputePolicy"
AmazonEKSBlockStoragePolicy = "${local.iam_role_policy_prefix}/AmazonEKSBlockStoragePolicy"
AmazonEKSLoadBalancingPolicy = "${local.iam_role_policy_prefix}/AmazonEKSLoadBalancingPolicy"
AmazonEKSNetworkingPolicy = "${local.iam_role_policy_prefix}/AmazonEKSNetworkingPolicy"
} : k => v if !local.create_outposts_local_cluster && local.auto_mode_enabled }
# EKS local cluster on Outposts
eks_outpost_iam_role_policies = { for k, v in {
AmazonEKSClusterPolicy = "${local.iam_role_policy_prefix}/AmazonEKSLocalOutpostClusterPolicy"
} : k => v if local.create_outposts_local_cluster && !local.auto_mode_enabled }
# Security groups for pods
eks_sgpp_iam_role_policies = { for k, v in {
AmazonEKSVPCResourceController = "${local.iam_role_policy_prefix}/AmazonEKSVPCResourceController"
} : k => v if var.enable_security_groups_for_pods && !local.create_outposts_local_cluster && !local.auto_mode_enabled }
}
data "aws_iam_policy_document" "assume_role_policy" {
count = local.create && var.create_iam_role ? 1 : 0
statement {
sid = "EKSClusterAssumeRole"
actions = [
"sts:AssumeRole",
"sts:TagSession",
]
principals {
type = "Service"
identifiers = ["eks.amazonaws.com"]
}
dynamic "principals" {
for_each = local.create_outposts_local_cluster ? [1] : []
content {
type = "Service"
identifiers = ["ec2.amazonaws.com"]
}
}
}
}
resource "aws_iam_role" "this" {
count = local.create_iam_role ? 1 : 0
name = var.iam_role_use_name_prefix ? null : local.iam_role_name
name_prefix = var.iam_role_use_name_prefix ? "${local.iam_role_name}${var.prefix_separator}" : 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://docs.aws.amazon.com/eks/latest/userguide/service_IAM_role.html
resource "aws_iam_role_policy_attachment" "this" {
for_each = { for k, v in merge(
local.eks_standard_iam_role_policies,
local.eks_auto_mode_iam_role_policies,
local.eks_outpost_iam_role_policies,
local.eks_sgpp_iam_role_policies,
) : k => v if local.create_iam_role }
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_role }
policy_arn = each.value
role = aws_iam_role.this[0].name
}
# Using separate attachment due to `The "for_each" value depends on resource attributes that cannot be determined until apply`
resource "aws_iam_role_policy_attachment" "cluster_encryption" {
# Encryption config not available on Outposts
count = local.create_iam_role && var.attach_cluster_encryption_policy && local.enable_cluster_encryption_config ? 1 : 0
policy_arn = aws_iam_policy.cluster_encryption[0].arn
role = aws_iam_role.this[0].name
}
resource "aws_iam_policy" "cluster_encryption" {
# Encryption config not available on Outposts
count = local.create_iam_role && var.attach_cluster_encryption_policy && local.enable_cluster_encryption_config ? 1 : 0
name = var.cluster_encryption_policy_use_name_prefix ? null : local.cluster_encryption_policy_name
name_prefix = var.cluster_encryption_policy_use_name_prefix ? local.cluster_encryption_policy_name : null
description = var.cluster_encryption_policy_description
path = var.cluster_encryption_policy_path
policy = jsonencode({
Version = "2012-10-17"
Statement = [
{
Action = [
"kms:Encrypt",
"kms:Decrypt",
"kms:ListGrants",
"kms:DescribeKey",
]
Effect = "Allow"
Resource = var.create_kms_key ? module.kms.key_arn : var.cluster_encryption_config.provider_key_arn
},
]
})
tags = merge(var.tags, var.cluster_encryption_policy_tags)
}
data "aws_iam_policy_document" "custom" {
count = local.create_iam_role && var.enable_auto_mode_custom_tags ? 1 : 0
dynamic "statement" {
for_each = var.enable_auto_mode_custom_tags ? [1] : []
content {
sid = "Compute"
actions = [
"ec2:CreateFleet",
"ec2:RunInstances",
"ec2:CreateLaunchTemplate",
]
resources = ["*"]
condition {
test = "StringEquals"
variable = "aws:RequestTag/eks:eks-cluster-name"
values = ["$${aws:PrincipalTag/eks:eks-cluster-name}"]
}
condition {
test = "StringLike"
variable = "aws:RequestTag/eks:kubernetes-node-class-name"
values = ["*"]
}
condition {
test = "StringLike"
variable = "aws:RequestTag/eks:kubernetes-node-pool-name"
values = ["*"]
}
}
}
dynamic "statement" {
for_each = var.enable_auto_mode_custom_tags ? [1] : []
content {
sid = "Storage"
actions = [
"ec2:CreateVolume",
"ec2:CreateSnapshot",
]
resources = [
"arn:${local.partition}:ec2:*:*:volume/*",
"arn:${local.partition}:ec2:*:*:snapshot/*",
]
condition {
test = "StringEquals"
variable = "aws:RequestTag/eks:eks-cluster-name"
values = ["$${aws:PrincipalTag/eks:eks-cluster-name}"]
}
}
}
dynamic "statement" {
for_each = var.enable_auto_mode_custom_tags ? [1] : []
content {
sid = "Networking"
actions = ["ec2:CreateNetworkInterface"]
resources = ["*"]
condition {
test = "StringEquals"
variable = "aws:RequestTag/eks:eks-cluster-name"
values = ["$${aws:PrincipalTag/eks:eks-cluster-name}"]
}
condition {
test = "StringEquals"
variable = "aws:RequestTag/eks:kubernetes-cni-node-name"
values = ["*"]
}
}
}
dynamic "statement" {
for_each = var.enable_auto_mode_custom_tags ? [1] : []
content {
sid = "LoadBalancer"
actions = [
"elasticloadbalancing:CreateLoadBalancer",
"elasticloadbalancing:CreateTargetGroup",
"elasticloadbalancing:CreateListener",
"elasticloadbalancing:CreateRule",
"ec2:CreateSecurityGroup",
]
resources = ["*"]
condition {
test = "StringEquals"
variable = "aws:RequestTag/eks:eks-cluster-name"
values = ["$${aws:PrincipalTag/eks:eks-cluster-name}"]
}
}
}
dynamic "statement" {
for_each = var.enable_auto_mode_custom_tags ? [1] : []
content {
sid = "ShieldProtection"
actions = ["shield:CreateProtection"]
resources = ["*"]
condition {
test = "StringEquals"
variable = "aws:RequestTag/eks:eks-cluster-name"
values = ["$${aws:PrincipalTag/eks:eks-cluster-name}"]
}
}
}
dynamic "statement" {
for_each = var.enable_auto_mode_custom_tags ? [1] : []
content {
sid = "ShieldTagResource"
actions = ["shield:TagResource"]
resources = ["arn:${local.partition}:shield::*:protection/*"]
condition {
test = "StringEquals"
variable = "aws:RequestTag/eks:eks-cluster-name"
values = ["$${aws:PrincipalTag/eks:eks-cluster-name}"]
}
}
}
}
resource "aws_iam_policy" "custom" {
count = local.create_iam_role && var.enable_auto_mode_custom_tags ? 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
policy = data.aws_iam_policy_document.custom[0].json
tags = merge(var.tags, var.iam_role_tags)
}
resource "aws_iam_role_policy_attachment" "custom" {
count = local.create_iam_role && var.enable_auto_mode_custom_tags ? 1 : 0
policy_arn = aws_iam_policy.custom[0].arn
role = aws_iam_role.this[0].name
}
################################################################################
# EKS Addons
################################################################################
locals {
# TODO - Set to `NONE` on next breaking change when default addons are disabled
resolve_conflicts_on_create_default = coalesce(var.bootstrap_self_managed_addons, true) ? "OVERWRITE" : "NONE"
}
data "aws_eks_addon_version" "this" {
for_each = { for k, v in var.cluster_addons : k => v if local.create && !local.create_outposts_local_cluster }
addon_name = try(each.value.name, each.key)
kubernetes_version = coalesce(var.cluster_version, aws_eks_cluster.this[0].version)
# TODO - Set default fallback to `true` on next breaking change
most_recent = try(each.value.most_recent, null)
}
resource "aws_eks_addon" "this" {
# Not supported on outposts
for_each = { for k, v in var.cluster_addons : k => v if !try(v.before_compute, false) && local.create && !local.create_outposts_local_cluster }
cluster_name = aws_eks_cluster.this[0].id
addon_name = try(each.value.name, each.key)
addon_version = coalesce(try(each.value.addon_version, null), data.aws_eks_addon_version.this[each.key].version)
configuration_values = try(each.value.configuration_values, null)
dynamic "pod_identity_association" {
for_each = try(each.value.pod_identity_association, [])
content {
role_arn = pod_identity_association.value.role_arn
service_account = pod_identity_association.value.service_account
}
}
preserve = try(each.value.preserve, true)
# TODO - Set to `NONE` on next breaking change when default addons are disabled
resolve_conflicts_on_create = try(each.value.resolve_conflicts_on_create, local.resolve_conflicts_on_create_default)
resolve_conflicts_on_update = try(each.value.resolve_conflicts_on_update, "OVERWRITE")
service_account_role_arn = try(each.value.service_account_role_arn, null)
timeouts {
create = try(each.value.timeouts.create, var.cluster_addons_timeouts.create, null)
update = try(each.value.timeouts.update, var.cluster_addons_timeouts.update, null)
delete = try(each.value.timeouts.delete, var.cluster_addons_timeouts.delete, null)
}
depends_on = [
module.fargate_profile,
module.eks_managed_node_group,
module.self_managed_node_group,
]
tags = merge(var.tags, try(each.value.tags, {}))
}
resource "aws_eks_addon" "before_compute" {
# Not supported on outposts
for_each = { for k, v in var.cluster_addons : k => v if try(v.before_compute, false) && local.create && !local.create_outposts_local_cluster }
cluster_name = aws_eks_cluster.this[0].id
addon_name = try(each.value.name, each.key)
addon_version = coalesce(try(each.value.addon_version, null), data.aws_eks_addon_version.this[each.key].version)
configuration_values = try(each.value.configuration_values, null)
dynamic "pod_identity_association" {
for_each = try(each.value.pod_identity_association, [])
content {
role_arn = pod_identity_association.value.role_arn
service_account = pod_identity_association.value.service_account
}
}
preserve = try(each.value.preserve, true)
# TODO - Set to `NONE` on next breaking change when default addons are disabled
resolve_conflicts_on_create = try(each.value.resolve_conflicts_on_create, local.resolve_conflicts_on_create_default)
resolve_conflicts_on_update = try(each.value.resolve_conflicts_on_update, "OVERWRITE")
service_account_role_arn = try(each.value.service_account_role_arn, null)
timeouts {
create = try(each.value.timeouts.create, var.cluster_addons_timeouts.create, null)
update = try(each.value.timeouts.update, var.cluster_addons_timeouts.update, null)
delete = try(each.value.timeouts.delete, var.cluster_addons_timeouts.delete, null)
}
tags = merge(var.tags, try(each.value.tags, {}))
}
################################################################################
# EKS Identity Provider
# Note - this is different from IRSA
################################################################################
locals {
# Maintain current behavior for <= 1.29, remove default for >= 1.30
# `null` will return the latest Kubernetes version from the EKS API, which at time of writing is 1.30
# https://github.com/kubernetes/kubernetes/pull/123561
# TODO - remove on next breaking change in conjunction with issuer URL change below
idpc_backwards_compat_version = contains(["1.21", "1.22", "1.23", "1.24", "1.25", "1.26", "1.27", "1.28", "1.29"], coalesce(var.cluster_version, "1.30"))
idpc_issuer_url = local.idpc_backwards_compat_version ? try(aws_eks_cluster.this[0].identity[0].oidc[0].issuer, null) : null
}
resource "aws_eks_identity_provider_config" "this" {
for_each = { for k, v in var.cluster_identity_providers : k => v if local.create && !local.create_outposts_local_cluster }
cluster_name = aws_eks_cluster.this[0].id
oidc {
client_id = each.value.client_id
groups_claim = lookup(each.value, "groups_claim", null)
groups_prefix = lookup(each.value, "groups_prefix", null)
identity_provider_config_name = try(each.value.identity_provider_config_name, each.key)
# TODO - make argument explicitly required on next breaking change
issuer_url = try(each.value.issuer_url, local.idpc_issuer_url)
required_claims = lookup(each.value, "required_claims", null)
username_claim = lookup(each.value, "username_claim", null)
username_prefix = lookup(each.value, "username_prefix", null)
}
tags = merge(var.tags, try(each.value.tags, {}))
}
################################################################################
# EKS Auto Node IAM Role
################################################################################
locals {
create_node_iam_role = local.create && var.create_node_iam_role && local.auto_mode_enabled
node_iam_role_name = coalesce(var.node_iam_role_name, "${var.cluster_name}-eks-auto")
}
data "aws_iam_policy_document" "node_assume_role_policy" {
count = local.create_node_iam_role ? 1 : 0
statement {
sid = "EKSAutoNodeAssumeRole"
actions = [
"sts:AssumeRole",
"sts:TagSession",
]
principals {
type = "Service"
identifiers = ["ec2.amazonaws.com"]
}
}
}
resource "aws_iam_role" "eks_auto" {
count = local.create_node_iam_role ? 1 : 0
name = var.node_iam_role_use_name_prefix ? null : local.node_iam_role_name
name_prefix = var.node_iam_role_use_name_prefix ? "${local.node_iam_role_name}-" : null
path = var.node_iam_role_path
description = var.node_iam_role_description
assume_role_policy = data.aws_iam_policy_document.node_assume_role_policy[0].json
permissions_boundary = var.node_iam_role_permissions_boundary
force_detach_policies = true
tags = merge(var.tags, var.node_iam_role_tags)
}
# Policies attached ref https://docs.aws.amazon.com/eks/latest/userguide/service_IAM_role.html
resource "aws_iam_role_policy_attachment" "eks_auto" {
for_each = { for k, v in {
AmazonEKSWorkerNodeMinimalPolicy = "${local.iam_role_policy_prefix}/AmazonEKSWorkerNodeMinimalPolicy",
AmazonEC2ContainerRegistryPullOnly = "${local.iam_role_policy_prefix}/AmazonEC2ContainerRegistryPullOnly",
} : k => v if local.create_node_iam_role }
policy_arn = each.value
role = aws_iam_role.eks_auto[0].name
}
resource "aws_iam_role_policy_attachment" "eks_auto_additional" {
for_each = { for k, v in var.node_iam_role_additional_policies : k => v if local.create_node_iam_role }
policy_arn = each.value
role = aws_iam_role.eks_auto[0].name
}
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