For AI agents: A markdown version of this page is available at https://docs.datadoghq.com/security/code_security/iac_security/iac_rules/terraform-tencentcloud-tke-cluster-has-public-access.md. A documentation index is available at /llms.txt.

TKE cluster has public access

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Metadata

Id: terraform-tencentcloud-tke-cluster-has-public-access

Provider: TencentCloud

Platform: Terraform

Severity: Medium

Category: Insecure Configurations

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Description

In a TKE cluster, public_ip_assigned should be set to false. A tencentcloud_kubernetes_cluster is noncompliant if either master_config or worker_config sets public_ip_assigned to true while internet_max_bandwidth_out is greater than 0. It is also noncompliant if public_ip_assigned is undefined and internet_max_bandwidth_out is greater than 0; in such cases, internet_max_bandwidth_out should be set to 0 or left undefined.

Compliant Code Examples

locals {
  first_vpc_id     = data.tencentcloud_vpc_subnets.vpc_one.instance_list.0.vpc_id
  first_subnet_id  = data.tencentcloud_vpc_subnets.vpc_one.instance_list.0.subnet_id
  second_vpc_id    = data.tencentcloud_vpc_subnets.vpc_two.instance_list.0.vpc_id
  second_subnet_id = data.tencentcloud_vpc_subnets.vpc_two.instance_list.0.subnet_id
  sg_id            = tencentcloud_security_group.sg.id
  image_id         = data.tencentcloud_images.default.image_id
}

data "tencentcloud_vpc_subnets" "vpc_one" {
  is_default        = true
  availability_zone = "ap-guangzhou-3"
}

data "tencentcloud_vpc_subnets" "vpc_two" {
  is_default        = true
  availability_zone = "ap-guangzhou-4"
}

resource "tencentcloud_security_group" "sg" {
  name = "tf-example-sg"
}

resource "tencentcloud_security_group_lite_rule" "sg_rule" {
  security_group_id = tencentcloud_security_group.sg.id

  ingress = [
    "ACCEPT#10.0.0.0/16#ALL#ALL",
    "ACCEPT#172.16.0.0/22#ALL#ALL",
    "DROP#0.0.0.0/0#ALL#ALL",
  ]

  egress = [
    "ACCEPT#172.16.0.0/22#ALL#ALL",
  ]
}

data "tencentcloud_images" "default" {
  image_type       = ["PUBLIC_IMAGE"]
  image_name_regex = "Final"
}

resource "tencentcloud_kubernetes_cluster" "example" {
  vpc_id                          = local.first_vpc_id
  cluster_cidr                    = "10.31.0.0/16"
  cluster_max_pod_num             = 32
  cluster_name                    = "tf_example_cluster"
  cluster_desc                    = "example for tke cluster"
  cluster_max_service_num         = 32
  cluster_internet                = false
  cluster_internet_security_group = local.sg_id
  cluster_version                 = "1.22.5"
  cluster_deploy_type             = "MANAGED_CLUSTER"

  master_config {
    count             = 1
    availability_zone = "ap-guangzhou-3"
    instance_type     = "SA2.2XLARGE16"
    system_disk_type  = "CLOUD_SSD"
    system_disk_size  = 60
    subnet_id         = local.first_subnet_id
    img_id            = local.image_id

    data_disk {
      disk_type = "CLOUD_PREMIUM"
      disk_size = 50
    }

    enhanced_security_service = false
    enhanced_monitor_service  = false
  }

  worker_config {
    count             = 1
    availability_zone = "ap-guangzhou-4"
    instance_type     = "SA2.2XLARGE16"
    system_disk_type  = "CLOUD_SSD"
    system_disk_size  = 60
    subnet_id         = local.second_subnet_id

    data_disk {
      disk_type = "CLOUD_PREMIUM"
      disk_size = 50
    }

    enhanced_security_service = false
    enhanced_monitor_service  = false
    cam_role_name             = "CVM_QcsRole"
  }

  labels = {
    "test1" = "test1",
    "test2" = "test2",
  }
}

locals {
  first_vpc_id     = data.tencentcloud_vpc_subnets.vpc_one.instance_list.0.vpc_id
  first_subnet_id  = data.tencentcloud_vpc_subnets.vpc_one.instance_list.0.subnet_id
  second_vpc_id    = data.tencentcloud_vpc_subnets.vpc_two.instance_list.0.vpc_id
  second_subnet_id = data.tencentcloud_vpc_subnets.vpc_two.instance_list.0.subnet_id
  sg_id            = tencentcloud_security_group.sg.id
  image_id         = data.tencentcloud_images.default.image_id
}

data "tencentcloud_vpc_subnets" "vpc_one" {
  is_default        = true
  availability_zone = "ap-guangzhou-3"
}

data "tencentcloud_vpc_subnets" "vpc_two" {
  is_default        = true
  availability_zone = "ap-guangzhou-4"
}

resource "tencentcloud_security_group" "sg" {
  name = "tf-example-sg"
}

resource "tencentcloud_security_group_lite_rule" "sg_rule" {
  security_group_id = tencentcloud_security_group.sg.id

  ingress = [
    "ACCEPT#10.0.0.0/16#ALL#ALL",
    "ACCEPT#172.16.0.0/22#ALL#ALL",
    "DROP#0.0.0.0/0#ALL#ALL",
  ]

  egress = [
    "ACCEPT#172.16.0.0/22#ALL#ALL",
  ]
}

data "tencentcloud_images" "default" {
  image_type       = ["PUBLIC_IMAGE"]
  image_name_regex = "Final"
}

resource "tencentcloud_kubernetes_cluster" "example" {
  vpc_id                          = local.first_vpc_id
  cluster_cidr                    = "10.31.0.0/16"
  cluster_max_pod_num             = 32
  cluster_name                    = "tf_example_cluster"
  cluster_desc                    = "example for tke cluster"
  cluster_max_service_num         = 32
  cluster_internet                = false
  cluster_internet_security_group = local.sg_id
  cluster_version                 = "1.22.5"
  cluster_deploy_type             = "MANAGED_CLUSTER"

  master_config {
    count              = 1
    availability_zone  = "ap-guangzhou-3"
    instance_type      = "SA2.2XLARGE16"
    system_disk_type   = "CLOUD_SSD"
    system_disk_size   = 60
    public_ip_assigned = false
    subnet_id          = local.first_subnet_id
    img_id             = local.image_id

    data_disk {
      disk_type = "CLOUD_PREMIUM"
      disk_size = 50
    }

    enhanced_security_service = false
    enhanced_monitor_service  = false
  }

  worker_config {
    count              = 1
    availability_zone  = "ap-guangzhou-4"
    instance_type      = "SA2.2XLARGE16"
    system_disk_type   = "CLOUD_SSD"
    system_disk_size   = 60
    public_ip_assigned = false
    subnet_id          = local.second_subnet_id

    data_disk {
      disk_type = "CLOUD_PREMIUM"
      disk_size = 50
    }

    enhanced_security_service = false
    enhanced_monitor_service  = false
    cam_role_name             = "CVM_QcsRole"
  }

  labels = {
    "test1" = "test1",
    "test2" = "test2",
  }
}

Non-Compliant Code Examples

locals {
  first_vpc_id     = data.tencentcloud_vpc_subnets.vpc_one.instance_list.0.vpc_id
  first_subnet_id  = data.tencentcloud_vpc_subnets.vpc_one.instance_list.0.subnet_id
  second_vpc_id    = data.tencentcloud_vpc_subnets.vpc_two.instance_list.0.vpc_id
  second_subnet_id = data.tencentcloud_vpc_subnets.vpc_two.instance_list.0.subnet_id
  sg_id            = tencentcloud_security_group.sg.id
  image_id         = data.tencentcloud_images.default.image_id
}

data "tencentcloud_vpc_subnets" "vpc_one" {
  is_default        = true
  availability_zone = "ap-guangzhou-3"
}

data "tencentcloud_vpc_subnets" "vpc_two" {
  is_default        = true
  availability_zone = "ap-guangzhou-4"
}

resource "tencentcloud_security_group" "sg" {
  name = "tf-example-sg"
}

resource "tencentcloud_security_group_lite_rule" "sg_rule" {
  security_group_id = tencentcloud_security_group.sg.id

  ingress = [
    "ACCEPT#10.0.0.0/16#ALL#ALL",
    "ACCEPT#172.16.0.0/22#ALL#ALL",
    "DROP#0.0.0.0/0#ALL#ALL",
  ]

  egress = [
    "ACCEPT#172.16.0.0/22#ALL#ALL",
  ]
}

data "tencentcloud_images" "default" {
  image_type       = ["PUBLIC_IMAGE"]
  image_name_regex = "Final"
}

resource "tencentcloud_kubernetes_cluster" "example" {
  vpc_id                          = local.first_vpc_id
  cluster_cidr                    = "10.31.0.0/16"
  cluster_max_pod_num             = 32
  cluster_name                    = "tf_example_cluster"
  cluster_desc                    = "example for tke cluster"
  cluster_max_service_num         = 32
  cluster_internet                = true
  cluster_internet_security_group = local.sg_id
  cluster_version                 = "1.22.5"
  cluster_deploy_type             = "MANAGED_CLUSTER"

  master_config {
    count                      = 1
    availability_zone          = "ap-guangzhou-3"
    instance_type              = "SA2.2XLARGE16"
    system_disk_type           = "CLOUD_SSD"
    system_disk_size           = 60
    internet_charge_type       = "TRAFFIC_POSTPAID_BY_HOUR"
    internet_max_bandwidth_out = 100
    public_ip_assigned         = true
    subnet_id                  = local.first_subnet_id
    img_id                     = local.image_id

    data_disk {
      disk_type = "CLOUD_PREMIUM"
      disk_size = 50
    }

    enhanced_security_service = false
    enhanced_monitor_service  = false
  }

  worker_config {
    count                      = 1
    availability_zone          = "ap-guangzhou-4"
    instance_type              = "SA2.2XLARGE16"
    system_disk_type           = "CLOUD_SSD"
    system_disk_size           = 60
    internet_charge_type       = "TRAFFIC_POSTPAID_BY_HOUR"
    internet_max_bandwidth_out = 100
    public_ip_assigned         = true
    subnet_id                  = local.second_subnet_id

    data_disk {
      disk_type = "CLOUD_PREMIUM"
      disk_size = 50
    }

    enhanced_security_service = false
    enhanced_monitor_service  = false
    cam_role_name             = "CVM_QcsRole"
  }

  labels = {
    "test1" = "test1",
    "test2" = "test2",
  }
}

locals {
  first_vpc_id     = data.tencentcloud_vpc_subnets.vpc_one.instance_list.0.vpc_id
  first_subnet_id  = data.tencentcloud_vpc_subnets.vpc_one.instance_list.0.subnet_id
  second_vpc_id    = data.tencentcloud_vpc_subnets.vpc_two.instance_list.0.vpc_id
  second_subnet_id = data.tencentcloud_vpc_subnets.vpc_two.instance_list.0.subnet_id
  sg_id            = tencentcloud_security_group.sg.id
  image_id         = data.tencentcloud_images.default.image_id
}

data "tencentcloud_vpc_subnets" "vpc_one" {
  is_default        = true
  availability_zone = "ap-guangzhou-3"
}

data "tencentcloud_vpc_subnets" "vpc_two" {
  is_default        = true
  availability_zone = "ap-guangzhou-4"
}

resource "tencentcloud_security_group" "sg" {
  name = "tf-example-sg"
}

resource "tencentcloud_security_group_lite_rule" "sg_rule" {
  security_group_id = tencentcloud_security_group.sg.id

  ingress = [
    "ACCEPT#10.0.0.0/16#ALL#ALL",
    "ACCEPT#172.16.0.0/22#ALL#ALL",
    "DROP#0.0.0.0/0#ALL#ALL",
  ]

  egress = [
    "ACCEPT#172.16.0.0/22#ALL#ALL",
  ]
}

data "tencentcloud_images" "default" {
  image_type       = ["PUBLIC_IMAGE"]
  image_name_regex = "Final"
}

resource "tencentcloud_kubernetes_cluster" "example" {
  vpc_id                          = local.first_vpc_id
  cluster_cidr                    = "10.31.0.0/16"
  cluster_max_pod_num             = 32
  cluster_name                    = "tf_example_cluster"
  cluster_desc                    = "example for tke cluster"
  cluster_max_service_num         = 32
  cluster_internet                = true
  cluster_internet_security_group = local.sg_id
  cluster_version                 = "1.22.5"
  cluster_deploy_type             = "MANAGED_CLUSTER"

  master_config {
    count                      = 1
    availability_zone          = "ap-guangzhou-3"
    instance_type              = "SA2.2XLARGE16"
    system_disk_type           = "CLOUD_SSD"
    system_disk_size           = 60
    internet_charge_type       = "TRAFFIC_POSTPAID_BY_HOUR"
    internet_max_bandwidth_out = 100
    subnet_id                  = local.first_subnet_id
    img_id                     = local.image_id

    data_disk {
      disk_type = "CLOUD_PREMIUM"
      disk_size = 50
    }

    enhanced_security_service = false
    enhanced_monitor_service  = false
    user_data                 = "dGVzdA=="
  }

  worker_config {
    count                      = 1
    availability_zone          = "ap-guangzhou-4"
    instance_type              = "SA2.2XLARGE16"
    system_disk_type           = "CLOUD_SSD"
    system_disk_size           = 60
    internet_charge_type       = "TRAFFIC_POSTPAID_BY_HOUR"
    internet_max_bandwidth_out = 100
    subnet_id                  = local.second_subnet_id

    data_disk {
      disk_type = "CLOUD_PREMIUM"
      disk_size = 50
    }

    enhanced_security_service = false
    enhanced_monitor_service  = false
    cam_role_name             = "CVM_QcsRole"
  }

  labels = {
    "test1" = "test1",
    "test2" = "test2",
  }
}

locals {
  first_vpc_id     = data.tencentcloud_vpc_subnets.vpc_one.instance_list.0.vpc_id
  first_subnet_id  = data.tencentcloud_vpc_subnets.vpc_one.instance_list.0.subnet_id
  second_vpc_id    = data.tencentcloud_vpc_subnets.vpc_two.instance_list.0.vpc_id
  second_subnet_id = data.tencentcloud_vpc_subnets.vpc_two.instance_list.0.subnet_id
  sg_id            = tencentcloud_security_group.sg.id
  image_id         = data.tencentcloud_images.default.image_id
}

data "tencentcloud_vpc_subnets" "vpc_one" {
  is_default        = true
  availability_zone = "ap-guangzhou-3"
}

data "tencentcloud_vpc_subnets" "vpc_two" {
  is_default        = true
  availability_zone = "ap-guangzhou-4"
}

resource "tencentcloud_security_group" "sg" {
  name = "tf-example-sg"
}

resource "tencentcloud_security_group_lite_rule" "sg_rule" {
  security_group_id = tencentcloud_security_group.sg.id

  ingress = [
    "ACCEPT#10.0.0.0/16#ALL#ALL",
    "ACCEPT#172.16.0.0/22#ALL#ALL",
    "DROP#0.0.0.0/0#ALL#ALL",
  ]

  egress = [
    "ACCEPT#172.16.0.0/22#ALL#ALL",
  ]
}

data "tencentcloud_images" "default" {
  image_type       = ["PUBLIC_IMAGE"]
  image_name_regex = "Final"
}

resource "tencentcloud_kubernetes_cluster" "example" {
  vpc_id                          = local.first_vpc_id
  cluster_cidr                    = "10.31.0.0/16"
  cluster_max_pod_num             = 32
  cluster_name                    = "tf_example_cluster"
  cluster_desc                    = "example for tke cluster"
  cluster_max_service_num         = 32
  cluster_internet                = true
  cluster_internet_security_group = local.sg_id
  cluster_version                 = "1.22.5"
  cluster_deploy_type             = "MANAGED_CLUSTER"

  master_config {
    count                      = 1
    availability_zone          = "ap-guangzhou-3"
    instance_type              = "SA2.2XLARGE16"
    system_disk_type           = "CLOUD_SSD"
    system_disk_size           = 60
    internet_charge_type       = "TRAFFIC_POSTPAID_BY_HOUR"
    internet_max_bandwidth_out = 100
    public_ip_assigned         = true
    subnet_id                  = local.first_subnet_id
    img_id                     = local.image_id

    data_disk {
      disk_type = "CLOUD_PREMIUM"
      disk_size = 50
    }

    enhanced_security_service = false
    enhanced_monitor_service  = false
  }

  master_config {
    count                      = 1
    availability_zone          = "ap-guangzhou-3"
    instance_type              = "SA2.2XLARGE16"
    system_disk_type           = "CLOUD_SSD"
    system_disk_size           = 60
    internet_charge_type       = "TRAFFIC_POSTPAID_BY_HOUR"
    internet_max_bandwidth_out = 100
    public_ip_assigned         = true
    subnet_id                  = local.first_subnet_id
    img_id                     = local.image_id

    data_disk {
      disk_type = "CLOUD_PREMIUM"
      disk_size = 50
    }

    enhanced_security_service = false
    enhanced_monitor_service  = false
  }

  worker_config {
    count                      = 1
    availability_zone          = "ap-guangzhou-4"
    instance_type              = "SA2.2XLARGE16"
    system_disk_type           = "CLOUD_SSD"
    system_disk_size           = 60
    internet_charge_type       = "TRAFFIC_POSTPAID_BY_HOUR"
    internet_max_bandwidth_out = 100
    public_ip_assigned         = true
    subnet_id                  = local.second_subnet_id

    data_disk {
      disk_type = "CLOUD_PREMIUM"
      disk_size = 50
    }

    enhanced_security_service = false
    enhanced_monitor_service  = false
    cam_role_name             = "CVM_QcsRole"
  }

  worker_config {
    count                      = 1
    availability_zone          = "ap-guangzhou-4"
    instance_type              = "SA2.2XLARGE16"
    system_disk_type           = "CLOUD_SSD"
    system_disk_size           = 60
    internet_charge_type       = "TRAFFIC_POSTPAID_BY_HOUR"
    internet_max_bandwidth_out = 100
    public_ip_assigned         = true
    subnet_id                  = local.second_subnet_id

    data_disk {
      disk_type = "CLOUD_PREMIUM"
      disk_size = 50
    }

    enhanced_security_service = false
    enhanced_monitor_service  = false
    cam_role_name             = "CVM_QcsRole"
  }

  labels = {
    "test1" = "test1",
    "test2" = "test2",
  }
}