terraform.gcp.security.gcp-gke-monitoring-enabled.gcp-gke-monitoring-enabled

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Ensure monitoring is set to Enabled on Kubernetes Engine Clusters

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Defintion

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rules:
  - id: gcp-gke-monitoring-enabled
    patterns:
      - pattern-inside: |
          resource "google_container_cluster" $ANYTHING {
            ...
            monitoring_service = "none"  
            ...
          }
    message: Ensure monitoring is set to Enabled on Kubernetes Engine Clusters
    languages:
      - hcl
    severity: WARNING
    metadata:
      owasp:
        - A05:2017 - Broken Access Control
        - A01:2021 - Broken Access Control
      cwe:
        - "CWE-284: Improper Access Control"
      technology:
        - terraform
        - gcp
      category: security
      references:
        - https://owasp.org/Top10/A01_2021-Broken_Access_Control
      subcategory:
        - audit
      likelihood: LOW
      impact: LOW
      confidence: LOW
      license: Commons Clause License Condition v1.0[LGPL-2.1-only]
      vulnerability_class:
        - Improper Authorization

Examples

gcp-gke-monitoring-enabled.tf

# fail
# ruleid: gcp-gke-monitoring-enabled
resource "google_container_cluster" "fail" {
    name = "my-gke-cluster"
    location = "us-central1"
    monitoring_service = "none"
  }

# ok: gcp-gke-monitoring-enabled
resource "google_container_cluster" "success" {
  name = "my-gke-cluster"
  location = "us-central1"
  monitoring_service = "monitoring.googleapis.com"
}