---
apiVersion: v1
kind: ConfigMap
metadata:
  name: auditbeat-config
  namespace: kube-system
  labels:
    k8s-app: auditbeat
data:
  auditbeat.yml: |-
    auditbeat.config.modules:
      # Mounted `auditbeat-daemonset-modules` configmap:
      path: ${path.config}/modules.d/*.yml
      # Reload module configs as they change:
      reload.enabled: false

    processors:
      - add_cloud_metadata:

    cloud.id: ${ELASTIC_CLOUD_ID}
    cloud.auth: ${ELASTIC_CLOUD_AUTH}

    output.elasticsearch:
      hosts: ['${ELASTICSEARCH_HOST:elasticsearch}:${ELASTICSEARCH_PORT:9200}']
      username: ${ELASTICSEARCH_USERNAME}
      password: ${ELASTICSEARCH_PASSWORD}
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: auditbeat-daemonset-modules
  namespace: kube-system
  labels:
    k8s-app: auditbeat
data:
  system.yml: |-
    - module: file_integrity
      paths:
      - /hostfs/bin
      - /hostfs/usr/bin
      - /hostfs/sbin
      - /hostfs/usr/sbin
      - /hostfs/etc
      exclude_files:
      - '(?i)\.sw[nop]$'
      - '~$'
      - '/\.git($|/)'
      scan_at_start: true
      scan_rate_per_sec: 50 MiB
      max_file_size: 100 MiB
      hash_types: [sha1]
      recursive: true
---
# Deploy a auditbeat instance per node for node metrics retrieval
apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  name: auditbeat
  namespace: kube-system
  labels:
    k8s-app: auditbeat
spec:
  template:
    metadata:
      labels:
        k8s-app: auditbeat
    spec:
      serviceAccountName: auditbeat
      terminationGracePeriodSeconds: 30
      hostNetwork: true
      dnsPolicy: ClusterFirstWithHostNet
      containers:
      - name: auditbeat
        image: docker.elastic.co/beats/auditbeat:6.5.0
        args: [
          "-c", "/etc/auditbeat.yml"
        ]
        env:
        - name: ELASTICSEARCH_HOST
          value: elasticsearch
        - name: ELASTICSEARCH_PORT
          value: "9200"
        - name: ELASTICSEARCH_USERNAME
          value: elastic
        - name: ELASTICSEARCH_PASSWORD
          value: changeme
        - name: ELASTIC_CLOUD_ID
          value:
        - name: ELASTIC_CLOUD_AUTH
          value:
        securityContext:
          runAsUser: 0
        resources:
          limits:
            memory: 200Mi
          requests:
            cpu: 100m
            memory: 100Mi
        volumeMounts:
        - name: config
          mountPath: /etc/auditbeat.yml
          readOnly: true
          subPath: auditbeat.yml
        - name: modules
          mountPath: /usr/share/auditbeat/modules.d
          readOnly: true
        - name: bin
          mountPath: /hostfs/bin
          readOnly: true
        - name: sbin
          mountPath: /hostfs/sbin
          readOnly: true
        - name: usrbin
          mountPath: /hostfs/usr/bin
          readOnly: true
        - name: usrsbin
          mountPath: /hostfs/usr/sbin
          readOnly: true
        - name: etc
          mountPath: /hostfs/etc
          readOnly: true
      volumes:
      - name: bin
        hostPath:
          path: /bin
      - name: usrbin
        hostPath:
          path: /usr/bin
      - name: sbin
        hostPath:
          path: /sbin
      - name: usrsbin
        hostPath:
          path: /usr/sbin
      - name: etc
        hostPath:
          path: /etc
      - name: config
        configMap:
          defaultMode: 0600
          name: auditbeat-config
      - name: modules
        configMap:
          defaultMode: 0600
          name: auditbeat-daemonset-modules
      - name: data
        hostPath:
          path: /var/lib/auditbeat-data
          type: DirectoryOrCreate
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
  name: auditbeat
subjects:
- kind: ServiceAccount
  name: auditbeat
  namespace: kube-system
roleRef:
  kind: ClusterRole
  name: auditbeat
  apiGroup: rbac.authorization.k8s.io
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRole
metadata:
  name: auditbeat
  labels:
    k8s-app: auditbeat
rules:
- apiGroups: [""]
  resources:
  - nodes
  - namespaces
  - pods
  verbs: ["get", "list", "watch"]
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: auditbeat
  namespace: kube-system
  labels:
    k8s-app: auditbeat
---