Audit log maxage not properly set

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Metadata

Id: da9f3aa8-fbfb-472f-b5a1-576127944218

Cloud Provider: k8s

Platform: Kubernetes

Severity: Low

Category: Observability

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Description

When a container runs kube-apiserver, the --audit-log-maxage flag should be set to 30 days or more. This rule flags containers (including initContainers) where the flag is missing or set to a value less than 30. It reports the resource and the command location when the flag is absent or incorrectly configured.

Compliant Code Examples

apiVersion: v1
kind: Pod
metadata:
  name: command-demo
  labels:
    purpose: demonstrate-command
spec:
  containers:
    - name: command-demo-container
      image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0
      command: ["kube-apiserver"]
      args: ["--audit-log-maxage=30"]
  restartPolicy: OnFailure

apiVersion: v1
kind: Pod
metadata:
  name: command-demo
  labels:
    purpose: demonstrate-command
spec:
  containers:
    - name: command-demo-container
      image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0
      command: ["kube-apiserver","--audit-log-maxage=35"]
      args: []
  restartPolicy: OnFailure

Non-Compliant Code Examples

apiVersion: v1
kind: Pod
metadata:
  name: command-demo
  labels:
    purpose: demonstrate-command
spec:
  containers:
    - name: command-demo-container
      image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0
      command: ["kube-apiserver"]
      args: []
  restartPolicy: OnFailure

apiVersion: serving.knative.dev/v1
kind: Service
metadata:
  name: dummy
  namespace: knative-sequence
spec:
  template:
    spec:
      containers:
        - name: command-demo-container
          image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0
          command: ["kube-apiserver"]
          args: []
      restartPolicy: OnFailure
---
apiVersion: serving.knative.dev/v1
kind: Configuration
metadata:
  name: dummy-config
  namespace: knative-sequence
spec:
  template:
    spec:
      containers:
        - name: command-demo-container
          image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0
          command: ["kube-apiserver"]
          args: []
      restartPolicy: OnFailure
---
apiVersion: serving.knative.dev/v1
kind: Revision
metadata:
  name: dummy-rev
  namespace: knative-sequence
spec:
  containers:
    - name: command-demo-container
      image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0
      command: ["kube-apiserver"]
      args: []
  restartPolicy: OnFailure
---
apiVersion: sources.knative.dev/v1
kind: ContainerSource
metadata:
  name: dummy-cs
  namespace: knative-sequence
spec:
  template:
    spec:
      containers:
        - name: command-demo-container
          image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0
          command: ["kube-apiserver"]
          args: []
      restartPolicy: OnFailure

apiVersion: v1
kind: Pod
metadata:
  name: command-demo
  labels:
    purpose: demonstrate-command
spec:
  containers:
    - name: command-demo-container
      image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0
      command: ["kube-apiserver"]
      args: ["--audit-log-maxage=26"]
  restartPolicy: OnFailure