feat: Add support for Mountpoint S3 CSI driver to EKS IRSA (#459)

Co-authored-by: Bryant Biggs <bryantbiggs@gmail.com>

.github/workflows/pre-commit.yml

@@ -32,6 +32,14 @@ jobs:
       matrix:
         directory: ${{ fromJson(needs.collectInputs.outputs.directories) }}
     steps:
+      # https://github.com/orgs/community/discussions/25678#discussioncomment-5242449
+      - name: Delete huge unnecessary tools folder
+        run: |
+          rm -rf /opt/hostedtoolcache/CodeQL
+          rm -rf /opt/hostedtoolcache/Java_Temurin-Hotspot_jdk
+          rm -rf /opt/hostedtoolcache/Ruby
+          rm -rf /opt/hostedtoolcache/go
+
       - name: Checkout
         uses: actions/checkout@v3
 
@@ -64,6 +72,14 @@ jobs:
     runs-on: ubuntu-latest
     needs: collectInputs
     steps:
+      # https://github.com/orgs/community/discussions/25678#discussioncomment-5242449
+      - name: Delete huge unnecessary tools folder
+        run: |
+          rm -rf /opt/hostedtoolcache/CodeQL
+          rm -rf /opt/hostedtoolcache/Java_Temurin-Hotspot_jdk
+          rm -rf /opt/hostedtoolcache/Ruby
+          rm -rf /opt/hostedtoolcache/go
+
       - name: Checkout
         uses: actions/checkout@v3
         with:

.pre-commit-config.yaml

@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/antonbabenko/pre-commit-terraform
-    rev: v1.85.0
+    rev: v1.88.0
     hooks:
       - id: terraform_fmt
       - id: terraform_wrapper_module_for_each

examples/iam-role-for-service-accounts-eks/README.md

@@ -52,6 +52,7 @@ Run `terraform destroy` when you don't need these resources.
 | <a name="module_karpenter_controller_irsa_role"></a> [karpenter\_controller\_irsa\_role](#module\_karpenter\_controller\_irsa\_role) | ../../modules/iam-role-for-service-accounts-eks | n/a |
 | <a name="module_load_balancer_controller_irsa_role"></a> [load\_balancer\_controller\_irsa\_role](#module\_load\_balancer\_controller\_irsa\_role) | ../../modules/iam-role-for-service-accounts-eks | n/a |
 | <a name="module_load_balancer_controller_targetgroup_binding_only_irsa_role"></a> [load\_balancer\_controller\_targetgroup\_binding\_only\_irsa\_role](#module\_load\_balancer\_controller\_targetgroup\_binding\_only\_irsa\_role) | ../../modules/iam-role-for-service-accounts-eks | n/a |
+| <a name="module_mountpoint_s3_csi_irsa_role"></a> [mountpoint\_s3\_csi\_irsa\_role](#module\_mountpoint\_s3\_csi\_irsa\_role) | ../../modules/iam-role-for-service-accounts-eks | n/a |
 | <a name="module_node_termination_handler_irsa_role"></a> [node\_termination\_handler\_irsa\_role](#module\_node\_termination\_handler\_irsa\_role) | ../../modules/iam-role-for-service-accounts-eks | n/a |
 | <a name="module_velero_irsa_role"></a> [velero\_irsa\_role](#module\_velero\_irsa\_role) | ../../modules/iam-role-for-service-accounts-eks | n/a |
 | <a name="module_vpc"></a> [vpc](#module\_vpc) | terraform-aws-modules/vpc/aws | ~> 5.0 |

examples/iam-role-for-service-accounts-eks/main.tf

@@ -136,6 +136,24 @@ module "efs_csi_irsa_role" {
   tags = local.tags
 }
 
+module "mountpoint_s3_csi_irsa_role" {
+  source = "../../modules/iam-role-for-service-accounts-eks"
+
+  role_name                       = "mountpoint-s3-csi"
+  attach_mountpoint_s3_csi_policy = true
+  mountpoint_s3_csi_bucket_arns   = ["arn:aws:s3:::mountpoint-s3-csi-bucket"]
+  mountpoint_s3_csi_path_arns     = ["arn:aws:s3:::mountpoint-s3-csi-bucket/example/*"]
+
+  oidc_providers = {
+    ex = {
+      provider_arn               = module.eks.oidc_provider_arn
+      namespace_service_accounts = ["kube-system:s3-csi-driver-sa"]
+    }
+  }
+
+  tags = local.tags
+}
+
 module "external_dns_irsa_role" {
   source = "../../modules/iam-role-for-service-accounts-eks"
 

modules/iam-role-for-service-accounts-eks/README.md

@@ -1,6 +1,7 @@
 # IAM Role for Service Accounts in EKS
 
 Creates an IAM role which can be assumed by AWS EKS `ServiceAccount`s with optional policies for commonly used controllers/custom resources within EKS. The optional policies supported include:
+
 - [Cert-Manager](https://cert-manager.io/docs/configuration/acme/dns01/route53/#set-up-an-iam-role)
 - [Cluster Autoscaler](https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler/cloudprovider/aws/README.md)
 - [EBS CSI Driver](https://github.com/kubernetes-sigs/aws-ebs-csi-driver/blob/master/docs/example-iam-policy.json)
@@ -85,10 +86,10 @@ module "karpenter_irsa_role" {
 
 module "eks" {
   source  = "terraform-aws-modules/eks/aws"
-  version = "~> 18.6"
+  version = "~> 20.4"
 
   cluster_name    = "my-cluster"
-  cluster_version = "1.21"
+  cluster_version = "1.29"
 
   vpc_id     = module.vpc.vpc_id
   subnet_ids = module.vpc.private_subnets
@@ -135,6 +136,7 @@ No modules.
 | [aws_iam_policy.karpenter_controller](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_policy) | resource |
 | [aws_iam_policy.load_balancer_controller](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_policy) | resource |
 | [aws_iam_policy.load_balancer_controller_targetgroup_only](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_policy) | resource |
+| [aws_iam_policy.mountpoint_s3_csi](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_policy) | resource |
 | [aws_iam_policy.node_termination_handler](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_policy) | resource |
 | [aws_iam_policy.velero](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_policy) | resource |
 | [aws_iam_policy.vpc_cni](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_policy) | resource |
@@ -154,6 +156,7 @@ No modules.
 | [aws_iam_role_policy_attachment.karpenter_controller](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_role_policy_attachment) | resource |
 | [aws_iam_role_policy_attachment.load_balancer_controller](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_role_policy_attachment) | resource |
 | [aws_iam_role_policy_attachment.load_balancer_controller_targetgroup_only](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_role_policy_attachment) | resource |
+| [aws_iam_role_policy_attachment.mountpoint_s3_csi](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_role_policy_attachment) | resource |
 | [aws_iam_role_policy_attachment.node_termination_handler](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_role_policy_attachment) | resource |
 | [aws_iam_role_policy_attachment.this](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_role_policy_attachment) | resource |
 | [aws_iam_role_policy_attachment.velero](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_role_policy_attachment) | resource |
@@ -173,6 +176,7 @@ No modules.
 | [aws_iam_policy_document.karpenter_controller](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
 | [aws_iam_policy_document.load_balancer_controller](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
 | [aws_iam_policy_document.load_balancer_controller_targetgroup_only](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
+| [aws_iam_policy_document.mountpoint_s3_csi](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
 | [aws_iam_policy_document.node_termination_handler](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
 | [aws_iam_policy_document.this](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
 | [aws_iam_policy_document.velero](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
@@ -202,6 +206,7 @@ No modules.
 | <a name="input_attach_karpenter_controller_policy"></a> [attach\_karpenter\_controller\_policy](#input\_attach\_karpenter\_controller\_policy) | Determines whether to attach the Karpenter Controller policy to the role | `bool` | `false` | no |
 | <a name="input_attach_load_balancer_controller_policy"></a> [attach\_load\_balancer\_controller\_policy](#input\_attach\_load\_balancer\_controller\_policy) | Determines whether to attach the Load Balancer Controller policy to the role | `bool` | `false` | no |
 | <a name="input_attach_load_balancer_controller_targetgroup_binding_only_policy"></a> [attach\_load\_balancer\_controller\_targetgroup\_binding\_only\_policy](#input\_attach\_load\_balancer\_controller\_targetgroup\_binding\_only\_policy) | Determines whether to attach the Load Balancer Controller policy for the TargetGroupBinding only | `bool` | `false` | no |
+| <a name="input_attach_mountpoint_s3_csi_policy"></a> [attach\_mountpoint\_s3\_csi\_policy](#input\_attach\_mountpoint\_s3\_csi\_policy) | Determines whether to attach the Mountpoint S3 CSI IAM policy to the role | `bool` | `false` | no |
 | <a name="input_attach_node_termination_handler_policy"></a> [attach\_node\_termination\_handler\_policy](#input\_attach\_node\_termination\_handler\_policy) | Determines whether to attach the Node Termination Handler policy to the role | `bool` | `false` | no |
 | <a name="input_attach_velero_policy"></a> [attach\_velero\_policy](#input\_attach\_velero\_policy) | Determines whether to attach the Velero IAM policy to the role | `bool` | `false` | no |
 | <a name="input_attach_vpc_cni_policy"></a> [attach\_vpc\_cni\_policy](#input\_attach\_vpc\_cni\_policy) | Determines whether to attach the VPC CNI IAM policy to the role | `bool` | `false` | no |
@@ -227,6 +232,8 @@ No modules.
 | <a name="input_karpenter_tag_key"></a> [karpenter\_tag\_key](#input\_karpenter\_tag\_key) | Tag key (`{key = value}`) applied to resources launched by Karpenter through the Karpenter provisioner | `string` | `"karpenter.sh/discovery"` | no |
 | <a name="input_load_balancer_controller_targetgroup_arns"></a> [load\_balancer\_controller\_targetgroup\_arns](#input\_load\_balancer\_controller\_targetgroup\_arns) | List of Target groups ARNs using Load Balancer Controller | `list(string)` | <pre>[<br>  "arn:aws:elasticloadbalancing:*:*:targetgroup/*/*"<br>]</pre> | no |
 | <a name="input_max_session_duration"></a> [max\_session\_duration](#input\_max\_session\_duration) | Maximum CLI/API session duration in seconds between 3600 and 43200 | `number` | `null` | no |
+| <a name="input_mountpoint_s3_csi_bucket_arns"></a> [mountpoint\_s3\_csi\_bucket\_arns](#input\_mountpoint\_s3\_csi\_bucket\_arns) | S3 bucket ARNs to allow Mountpoint S3 CSI to list buckets | `list(string)` | `[]` | no |
+| <a name="input_mountpoint_s3_csi_path_arns"></a> [mountpoint\_s3\_csi\_path\_arns](#input\_mountpoint\_s3\_csi\_path\_arns) | S3 path ARNs to allow Mountpoint S3 CSI driver to manage items at the provided path(s). This is required if `attach_mountpoint_s3_csi_policy = true` | `list(string)` | `[]` | no |
 | <a name="input_node_termination_handler_sqs_queue_arns"></a> [node\_termination\_handler\_sqs\_queue\_arns](#input\_node\_termination\_handler\_sqs\_queue\_arns) | List of SQS ARNs that contain node termination events | `list(string)` | <pre>[<br>  "*"<br>]</pre> | no |
 | <a name="input_oidc_providers"></a> [oidc\_providers](#input\_oidc\_providers) | Map of OIDC providers where each provider map should contain the `provider_arn` and `namespace_service_accounts` | `any` | `{}` | no |
 | <a name="input_policy_name_prefix"></a> [policy\_name\_prefix](#input\_policy\_name\_prefix) | IAM policy name prefix | `string` | `"AmazonEKS_"` | no |

modules/iam-role-for-service-accounts-eks/policies.tf

@@ -422,6 +422,50 @@ resource "aws_iam_role_policy_attachment" "efs_csi" {
   policy_arn = aws_iam_policy.efs_csi[0].arn
 }
 
+################################################################################
+# Mountpoint S3 CSI Driver Policy
+################################################################################
+
+#https://github.com/awslabs/mountpoint-s3/blob/main/doc/CONFIGURATION.md#iam-permissions
+data "aws_iam_policy_document" "mountpoint_s3_csi" {
+  count = var.create_role && var.attach_mountpoint_s3_csi_policy ? 1 : 0
+
+  statement {
+    sid       = "MountpointFullBucketAccess"
+    actions   = ["s3:ListBucket"]
+    resources = coalescelist(var.mountpoint_s3_csi_bucket_arns, ["arn:${local.partition}:s3:::*"])
+  }
+
+  statement {
+    sid = "MountpointFullObjectAccess"
+    actions = [
+      "s3:GetObject",
+      "s3:PutObject",
+      "s3:AbortMultipartUpload",
+      "s3:DeleteObject"
+    ]
+    resources = var.mountpoint_s3_csi_path_arns
+  }
+}
+
+resource "aws_iam_policy" "mountpoint_s3_csi" {
+  count = var.create_role && var.attach_mountpoint_s3_csi_policy ? 1 : 0
+
+  name_prefix = "${var.policy_name_prefix}Mountpoint_S3_CSI-"
+  path        = var.role_path
+  description = "Mountpoint S3 CSI driver policy to allow management of S3"
+  policy      = data.aws_iam_policy_document.mountpoint_s3_csi[0].json
+
+  tags = var.tags
+}
+
+resource "aws_iam_role_policy_attachment" "mountpoint_s3_csi" {
+  count = var.create_role && var.attach_mountpoint_s3_csi_policy ? 1 : 0
+
+  role       = aws_iam_role.this[0].name
+  policy_arn = aws_iam_policy.mountpoint_s3_csi[0].arn
+}
+
 ################################################################################
 # External DNS Policy
 ################################################################################

modules/iam-role-for-service-accounts-eks/variables.tf

@@ -145,6 +145,25 @@ variable "attach_efs_csi_policy" {
   default     = false
 }
 
+# S3 CSI
+variable "attach_mountpoint_s3_csi_policy" {
+  description = "Determines whether to attach the Mountpoint S3 CSI IAM policy to the role"
+  type        = bool
+  default     = false
+}
+
+variable "mountpoint_s3_csi_bucket_arns" {
+  description = "S3 bucket ARNs to allow Mountpoint S3 CSI to list buckets"
+  type        = list(string)
+  default     = []
+}
+
+variable "mountpoint_s3_csi_path_arns" {
+  description = "S3 path ARNs to allow Mountpoint S3 CSI driver to manage items at the provided path(s). This is required if `attach_mountpoint_s3_csi_policy = true`"
+  type        = list(string)
+  default     = []
+}
+
 # External DNS
 variable "attach_external_dns_policy" {
   description = "Determines whether to attach the External DNS IAM policy to the role"

wrappers/iam-role-for-service-accounts-eks/main.tf

@@ -21,6 +21,7 @@ module "wrapper" {
   attach_karpenter_controller_policy                              = try(each.value.attach_karpenter_controller_policy, var.defaults.attach_karpenter_controller_policy, false)
   attach_load_balancer_controller_policy                          = try(each.value.attach_load_balancer_controller_policy, var.defaults.attach_load_balancer_controller_policy, false)
   attach_load_balancer_controller_targetgroup_binding_only_policy = try(each.value.attach_load_balancer_controller_targetgroup_binding_only_policy, var.defaults.attach_load_balancer_controller_targetgroup_binding_only_policy, false)
+  attach_mountpoint_s3_csi_policy                                 = try(each.value.attach_mountpoint_s3_csi_policy, var.defaults.attach_mountpoint_s3_csi_policy, false)
   attach_node_termination_handler_policy                          = try(each.value.attach_node_termination_handler_policy, var.defaults.attach_node_termination_handler_policy, false)
   attach_velero_policy                                            = try(each.value.attach_velero_policy, var.defaults.attach_velero_policy, false)
   attach_vpc_cni_policy                                           = try(each.value.attach_vpc_cni_policy, var.defaults.attach_vpc_cni_policy, false)
@@ -46,6 +47,8 @@ module "wrapper" {
   karpenter_tag_key                                               = try(each.value.karpenter_tag_key, var.defaults.karpenter_tag_key, "karpenter.sh/discovery")
   load_balancer_controller_targetgroup_arns                       = try(each.value.load_balancer_controller_targetgroup_arns, var.defaults.load_balancer_controller_targetgroup_arns, ["arn:aws:elasticloadbalancing:*:*:targetgroup/*/*"])
   max_session_duration                                            = try(each.value.max_session_duration, var.defaults.max_session_duration, null)
+  mountpoint_s3_csi_bucket_arns                                   = try(each.value.mountpoint_s3_csi_bucket_arns, var.defaults.mountpoint_s3_csi_bucket_arns, [])
+  mountpoint_s3_csi_path_arns                                     = try(each.value.mountpoint_s3_csi_path_arns, var.defaults.mountpoint_s3_csi_path_arns, [])
   node_termination_handler_sqs_queue_arns                         = try(each.value.node_termination_handler_sqs_queue_arns, var.defaults.node_termination_handler_sqs_queue_arns, ["*"])
   oidc_providers                                                  = try(each.value.oidc_providers, var.defaults.oidc_providers, {})
   policy_name_prefix                                              = try(each.value.policy_name_prefix, var.defaults.policy_name_prefix, "AmazonEKS_")