Metricbeat fails to index docker metadata

[kuisathaverat]

Please post all questions and issues on https://discuss.elastic.co/c/beats
before opening a Github Issue. Your questions will reach a wider audience there,
and if we confirm that there is a bug, then you can open a new issue.

For security vulnerabilities please only send reports to security@elastic.co.
See https://www.elastic.co/community/security for more information.

Please include configurations and logs if available.

For confirmed bugs, please report:

• Version: 7.1.0-SNAPSHOT
• Operating System: k8s
• Discuss Forum URL: https://discuss.elastic.co/t/metricbeat-fail-to-index-docker-metadata/172155
• Steps to Reproduce:

• Create a k8s cluster
• Deploy Elastic search 7.1.0-SNAPSHOT
• Deploy Metricbeat with the configuration above
• Deploy Auditbeat with the configuration above
• Check the Elasticsearch logs

{
  [metricbeat - 7.1 .0][_doc][4 ARYWWkBTidYNB1MYom3], source[{
    "@timestamp": "2019-03-07T18:08:00.214Z",
    "docker": {
      "container": {
        "labels": {
          "io_kubernetes_docker_type": "podsandbox",
          "annotation_kubernetes_io/config_seen": "2019-03-07T18:05:52.183452515Z",
          "annotation_kubernetes_io/config_source": "api",
          "io_kubernetes_pod_namespace": "kube-system",
          "pod-template-generation": "1",
          "io_kubernetes_container_name": "POD",
          "io_kubernetes_pod_name": "auditbeat-w7j9j",
          "k8s-app": "auditbeat",
          "controller-revision-hash": "1545459614",
          "io_kubernetes_pod_uid": "a5145dea-4103-11e9-b1d6-42010a8401a4"
        },
        "image": "k8s.gcr.io/pause-amd64:3.1",
        "status": "Up 2 minutes",
        "id": "06e88f74f9455c64af63e503dc85be6ad25c1b8d728b8d230049dee53bc6ff6d",
        "name": "k8s_POD_auditbeat-w7j9j_kube-system_a5145dea-4103-11e9-b1d6-42010a8401a4_0",
        "ip_addresses": [""],
        "size": {
          "rw": 0,
          "root_fs": 0
        },
        "created": "2019-03-07T18:05:52.000Z",
        "command": "/pause"
      }
    },
    "event": {
      "duration": 15917699,
      "dataset": "docker.container",
      "module": "docker"
    },
    "host": {
      "hostname": "gke-XXXXXXXXXX-pool-1-c6a5cd7f-ggzj",
      "architecture": "x86_64",
      "os": {
        "platform": "centos",
        "version": "7 (Core)",
        "family": "redhat",
        "name": "CentOS Linux",
        "kernel": "4.14.65+",
        "codename": "Core"
      },
      "containerized": true,
      "name": "gke-XXXXXXXXXX-pool-1-c6a5cd7f-ggzj"
    },
    "ecs": {
      "version": "1.0.0-beta2"
    },
    "agent": {
      "id": "70b22ecd-18ee-43ff-9bc5-a53433d68d11",
      "version": "7.1.0",
      "type": "metricbeat",
      "ephemeral_id": "81b25b3a-55ac-44cd-b77c-b59872c3dea8",
      "hostname": "gke-XXXXXXXXXX-pool-1-c6a5cd7f-ggzj"
    },
    "cloud": {
      "machine": {
        "type": "projects/XXXXXXXXXX/machineTypes/n1-standard-2"
      },
      "availability_zone": "projects/XXXXXXXXXX/zones/europe-west1-c",
      "instance": {
        "id": "7177843840848088616",
        "name": "gke-XXXXXXXXXX-pool-1-c6a5cd7f-ggzj"
      },
      "project": {
        "id": "XXXXXXXXXX"
      },
      "provider": "gce"
    },
    "metricset": {
      "name": "container"
    },
    "service": {
      "address": "/var/run/docker.sock",
      "type": "docker"
    }
  }]
}

Metricbeat configuration

---
apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  name: metricbeat
  namespace: kube-system
  labels:
    k8s-app: metricbeat
spec:
  template:
    metadata:
      labels:
        k8s-app: metricbeat
    spec:
      serviceAccountName: metricbeat
      terminationGracePeriodSeconds: 30
      hostNetwork: true
      dnsPolicy: ClusterFirstWithHostNet
      containers:
      - name: metricbeat
        image: elastic/metricbeat:7.1.0-SNAPSHOT
        args: [
          "-c", "/etc/metricbeat.yml",
          "-e",
          "-system.hostfs=/hostfs",
          "-d", "autodiscover, add_docker_metadata, add_kubernetes_metadata"
        ]
        env:
        - name: ELASTICSEARCH_USERNAME
          valueFrom:
            secretKeyRef:
              name: es-creds
              key: user
        - name: ELASTICSEARCH_PASSWORD
          valueFrom:
            secretKeyRef:
              name: es-creds
              key: password
        - name: ELASTICSEARCH_PROTO
          valueFrom:
            secretKeyRef:
              name: es-creds
              key: protocol
        - name: ELASTICSEARCH_HOST
          valueFrom:
            secretKeyRef:
              name: es-creds
              key: host
        - name: ELASTICSEARCH_PORT
          valueFrom:
            secretKeyRef:
              name: es-creds
              key: port
        - name: KIBANA_HOST
          valueFrom:
            secretKeyRef:
              name: kibana-creds
              key: host
        - name: KIBANA_PROTO
          valueFrom:
            secretKeyRef:
              name: kibana-creds
              key: protocol
        - name: KIBANA_PORT
          valueFrom:
            secretKeyRef:
              name: kibana-creds
              key: port
        - name: KIBANA_USERNAME
          valueFrom:
            secretKeyRef:
              name: kibana-creds
              key: user
        - name: KIBANA_PASSWORD
          valueFrom:
            secretKeyRef:
              name: kibana-creds
              key: password
        - name: NODE_NAME
          valueFrom:
            fieldRef:
              fieldPath: spec.nodeName
        - name: MYSQL_ROOT_PASSWORD
          valueFrom:
            secretKeyRef:
              name: mysql-creds
              key: mysql-root-password
        - name: POSGRESQL_ADMIN_PASSWORD
          valueFrom:
            secretKeyRef:
              name: postgresql-creds
              key: postgresql-password
        securityContext:
          runAsUser: 0
        resources:
          limits:
            memory: 200Mi
          requests:
            cpu: 100m
            memory: 100Mi
        volumeMounts:
        - name: config
          mountPath: /etc/metricbeat.yml
          readOnly: true
          subPath: metricbeat.yml
        - name: modules
          mountPath: /usr/share/metricbeat/modules.d
          readOnly: true
        - name: dockersock
          mountPath: /var/run/docker.sock
        - name: proc
          mountPath: /hostfs/proc
          readOnly: true
        - name: cgroup
          mountPath: /hostfs/sys/fs/cgroup
          readOnly: true
      volumes:
      - name: proc
        hostPath:
          path: /proc
      - name: cgroup
        hostPath:
          path: /sys/fs/cgroup
      - name: dockersock
        hostPath:
          path: /var/run/docker.sock
      - name: config
        configMap:
          defaultMode: 0600
          name: metricbeat-daemonset-config
      - name: modules
        configMap:
          defaultMode: 0600
          name: metricbeat-daemonset-modules
      - name: data
        hostPath:
          path: /var/lib/metricbeat-data
          type: DirectoryOrCreate
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: metricbeat-daemonset-config
  namespace: kube-system
  labels:
    k8s-app: metricbeat
data:
  metricbeat.yml: |-
    metricbeat.config.modules:
      path: ${path.config}/modules.d/*.yml
      reload.enabled: false
    metricbeat.autodiscover:
      providers:
        - type: kubernetes
          host: ${NODE_NAME}
          templates:
            - condition:
                or:
                  - contains:
                      kubernetes.container.image: nginx
                  - contains:
                      kubernetes.container.image: nginx-ingress-controller
              config:
                - module: nginx
                  period: 10s
                  metricsets: ["stubstatus"]
                  hosts: ["${data.host}:8080"]
                  server_status_path: "server-status"
    processors:
      - add_cloud_metadata:
      - add_docker_metadata:
      - add_kubernetes_metadata:
          in_cluster: true
      - add_host_metadata:
      - drop_fields:
          when:
            has_fields: ['kubernetes.labels.app']
          fields:
            - 'kubernetes.labels.app'

    output.elasticsearch:
      hosts: ['${ELASTICSEARCH_PROTO}://${ELASTICSEARCH_HOST:elasticsearch}:${ELASTICSEARCH_PORT:9200}']
      username: ${ELASTICSEARCH_USERNAME}
      password: ${ELASTICSEARCH_PASSWORD}
      ssl.enabled: true
      ssl.verification_mode: none
    xpack.monitoring.enabled: true
    setup.kibana.host: ${KIBANA_PROTO}://${KIBANA_HOST}:${KIBANA_PORT:5601}
    setup.kibana.username: ${KIBANA_USERNAME}
    setup.kibana.password: ${KIBANA_PASSWORD}
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: metricbeat-daemonset-modules
  namespace: kube-system
  labels:
    k8s-app: metricbeat
data:
  system.yml: |-
    - module: system
      period: 10s
      metricsets:
        - cpu
        - load
        - memory
        - network
        - process
        - process_summary
        - uptime
        - core
        - socket
      processes: ['.*']
      processors:
        - add_docker_metadata:
            host: "unix:///var/run/docker.sock"
            match_fields: ["system.process.cgroup.id"]
      process.include_top_n.enabled: false
    - module: system
      period: 1m
      metricsets:
        - filesystem
        - fsstat
      processors:
      - drop_event.when.regexp:
          system.filesystem.mount_point: '^/(sys|cgroup|proc|dev|etc|host|lib)($|/)'
  kubernetes.yml: |-
    - module: kubernetes
      metricsets:
        - node
        - system
        - pod
        - container
        - volume
      period: 10s
      host: ${NODE_NAME}
      hosts: ["localhost:10255"]
  docker.yml: |-
    - module: docker
      metricsets:
        - container
        - cpu
        - healthcheck
        - info
        - memory
        - network
      hosts: ["unix:///var/run/docker.sock"]
      period: 10s

Auditbeat configuration

---
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
      hostPID: true
      terminationGracePeriodSeconds: 30
      dnsPolicy: ClusterFirstWithHostNet
      containers:
      - name: auditbeat
        image: elastic/auditbeat:7.1.0-SNAPSHOT
        securityContext:
          runAsUser: 0
          capabilities:
            add:
            - AUDIT_CONTROL
            - AUDIT_READ
            - NET_ADMIN
        args: [ "-c", "/etc/auditbeat.yml", "-e", "-d", "add_docker_metadata" ]
        env:
        - name: ELASTICSEARCH_USERNAME
          valueFrom:
            secretKeyRef:
              name: es-creds
              key: user
        - name: ELASTICSEARCH_PASSWORD
          valueFrom:
            secretKeyRef:
              name: es-creds
              key: password
        - name: ELASTICSEARCH_PROTO
          valueFrom:
            secretKeyRef:
              name: es-creds
              key: protocol
        - name: ELASTICSEARCH_HOST
          valueFrom:
            secretKeyRef:
              name: es-creds
              key: host
        - name: ELASTICSEARCH_PORT
          valueFrom:
            secretKeyRef:
              name: es-creds
              key: port
        - name: NODE_NAME
          valueFrom:
            fieldRef:
              fieldPath: spec.nodeName
        - name: KIBANA_HOST
          valueFrom:
            secretKeyRef:
              name: kibana-creds
              key: host
        - name: KIBANA_PROTO
          valueFrom:
            secretKeyRef:
              name: kibana-creds
              key: protocol
        - name: KIBANA_PORT
          valueFrom:
            secretKeyRef:
              name: kibana-creds
              key: port
        - name: KIBANA_USERNAME
          valueFrom:
            secretKeyRef:
              name: kibana-creds
              key: user
        - name: KIBANA_PASSWORD
          valueFrom:
            secretKeyRef:
              name: kibana-creds
              key: password
        resources:
          limits:
            memory: 200Mi
          requests:
            cpu: 100m
            memory: 100Mi
        volumeMounts:
        - name: config
          mountPath: /etc/auditbeat.yml
          readOnly: true
          subPath: auditbeat.yml
        - name: dockersock
          mountPath: /var/run/docker.sock
        - name: proc
          mountPath: /hostfs/proc
          readOnly: true
      volumes:
      - name: config
        configMap:
          defaultMode: 0600
          name: auditbeat-config
      - name: data
        hostPath:
          path: /var/lib/auditbeat-data
          type: DirectoryOrCreate
      - name: proc
        hostPath:
          path: /proc
      - name: dockersock
        hostPath:
          path: /var/run/docker.sock
---
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
  - events
  - pods
  verbs: ["get", "list", "watch"]
- apiGroups: ["extensions"]
  resources:
  - replicasets
  verbs: ["get", "list", "watch"]
- apiGroups: ["apps"]
  resources:
  - statefulsets
  - deployments
  verbs: ["get", "list", "watch"]
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: auditbeat
  namespace: kube-system
  labels:
    k8s-app: auditbeat
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: auditbeat-config
  namespace: kube-system
  labels:
    k8s-app: auditbeat
data:
  auditbeat.yml: |-
    auditbeat.modules:
    - module: auditd
      audit_rules: |
        -a always,exit -F arch=b32 -S all -F key=32bit-abi
        ## Executions.
        -a always,exit -F arch=b64 -S execve,execveat -k exec
        ## External access (warning: these can be expensive to audit).
        -a always,exit -F arch=b64 -S accept,bind,connect -F key=external-access
        ## Identity changes.
        -w /etc/group -p wa -k identity
        -w /etc/passwd -p wa -k identity
        -w /etc/gshadow -p wa -k identity
        ## Unauthorized access attempts.
        -a always,exit -F arch=b64 -S open,creat,truncate,ftruncate,openat,open_by_handle_at -F exit=-EACCES -k access
        -a always,exit -F arch=b64 -S open,creat,truncate,ftruncate,openat,open_by_handle_at -F exit=-EPERM -k access
    setup.template.settings:
      index.number_of_shards: 3
    processors:
      - add_docker_metadata:
         host: "unix:///var/run/docker.sock"
         match_pids: [ "process.pid", "process.ppid" ]
      - add_host_metadata: ~
      - add_cloud_metadata: ~
    output.elasticsearch:
      hosts: ['${ELASTICSEARCH_PROTO:http}://${ELASTICSEARCH_HOST:elasticsearch}:${ELASTICSEARCH_PORT:9200}']
      username: ${ELASTICSEARCH_USERNAME}
      password: ${ELASTICSEARCH_PASSWORD}
      ssl.enabled: true
      ssl.verification_mode: none
    xpack.monitoring.enabled: true
    setup.kibana.host: ${KIBANA_PROTO}://${KIBANA_HOST}:${KIBANA_PORT:5601}
    setup.kibana.username: ${KIBANA_USERNAME}
    setup.kibana.password: ${KIBANA_PASSWORD}

[jsoriano]

Good catch, thanks for reporting, I have opened a PR to fix this.