CS Kubernetes node pool auto repair disabled

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Metadata

Id: 81ce9394-013d-4731-8fcc-9d229b474073

Cloud Provider: Alicloud

Platform: Terraform

Severity: Medium

Category: Insecure Configurations

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Description

Verifies that Alicloud Container Service node pools (alicloud_cs_kubernetes_node_pool) have management.auto_repair set to true. The auto_repair setting periodically detects and repairs failing nodes to maintain a healthy, running cluster. The rule reports when the management block is missing, when auto_repair is not present, or when auto_repair is explicitly set to false. Remediation is to add a management block with auto_repair = true, or to update the existing auto_repair value to true.

Compliant Code Examples

resource "alicloud_cs_kubernetes_node_pool" "default1" {
  name                 = var.name
  cluster_id           = alicloud_cs_managed_kubernetes.default.0.id
  vswitch_ids          = [alicloud_vswitch.default.id]
  instance_types       = [data.alicloud_instance_types.default.instance_types.0.id]
  system_disk_category = "cloud_efficiency"
  system_disk_size     = 40

  # only key_name is supported in the management node pool
  key_name = alicloud_key_pair.default.key_name

  # you need to specify the number of nodes in the node pool, which can be zero
  desired_size = 1

  # management node pool configuration.
  management {
    auto_repair     = true
    auto_upgrade    = true
    surge           = 1
    max_unavailable = 1
  }

}

Non-Compliant Code Examples

resource "alicloud_cs_kubernetes_node_pool" "default3" {
  name                 = var.name
  cluster_id           = alicloud_cs_managed_kubernetes.default.0.id
  vswitch_ids          = [alicloud_vswitch.default.id]
  instance_types       = [data.alicloud_instance_types.default.instance_types.0.id]
  system_disk_category = "cloud_efficiency"
  system_disk_size     = 40

  # only key_name is supported in the management node pool
  key_name = alicloud_key_pair.default.key_name

  # you need to specify the number of nodes in the node pool, which can be zero
  desired_size = 1

  # management node pool configuration.
  management {
    auto_repair     = false
    auto_upgrade    = true
    surge           = 1
    max_unavailable = 1
  }
}

resource "alicloud_cs_kubernetes_node_pool" "default4" {
  name                 = var.name
  cluster_id           = alicloud_cs_managed_kubernetes.default.0.id
  vswitch_ids          = [alicloud_vswitch.default.id]
  instance_types       = [data.alicloud_instance_types.default.instance_types.0.id]
  system_disk_category = "cloud_efficiency"
  system_disk_size     = 40

  # only key_name is supported in the management node pool
  key_name = alicloud_key_pair.default.key_name

  # you need to specify the number of nodes in the node pool, which can be zero
  desired_size = 1

  # management node pool configuration.
  management {
    auto_upgrade    = true
    surge           = 1
    max_unavailable = 1
  }
}

resource "alicloud_cs_kubernetes_node_pool" "default2" {
  name           = var.name
  cluster_id     = alicloud_cs_managed_kubernetes.default.0.id
  vswitch_ids    = [alicloud_vswitch.default.id]
  instance_types = [data.alicloud_instance_types.default.instance_types.0.id]

  system_disk_category = "cloud_efficiency"
  system_disk_size     = 40
  key_name             = alicloud_key_pair.default.key_name

  # comment out node_count and specify a new field desired_size
  # node_count = 1

  desired_size = 1
}