metricbeat-kubernetes.yml

---
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
        #- core
        #- diskio
        #- socket
      processes: ['.*']
      process.include_top_n:
        by_cpu: 5      # include top 5 processes by CPU
        by_memory: 5   # include top 5 processes by memory

    - module: system
      period: 1m
      metricsets:
        - filesystem
        - fsstat
      processors:
      - drop_event.when.regexp:
          system.filesystem.mount_point: '^/(sys|cgroup|proc|dev|etc|host|lib|snap)($|/)'
  kubernetes.yml: |-
    - module: kubernetes
      metricsets:
        - node
        - system
        - pod
        - container
        - volume
      period: 10s
      host: ${NODE_NAME}
      hosts: ["https://${NODE_NAME}:10250"]
      bearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/token
      ssl.verification_mode: "none"
      # If there is a CA bundle that contains the issuer of the certificate used in the Kubelet API,
      # remove ssl.verification_mode entry and use the CA, for instance:
      #ssl.certificate_authorities:
        #- /var/run/secrets/kubernetes.io/serviceaccount/service-ca.crt
    # Currently `proxy` metricset is not supported on Openshift, comment out section
    - module: kubernetes
      metricsets:
        - proxy
      period: 10s
      host: ${NODE_NAME}
      hosts: ["localhost:10249"]
---
# Deploy a Metricbeat instance per node for node metrics retrieval
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: metricbeat
  namespace: kube-system
  labels:
    k8s-app: metricbeat
spec:
  selector:
    matchLabels:
      k8s-app: metricbeat
  template:
    metadata:
      labels:
        k8s-app: metricbeat
    spec:
      serviceAccountName: metricbeat
      terminationGracePeriodSeconds: 30
      hostNetwork: true
      dnsPolicy: ClusterFirstWithHostNet
      containers:
      - name: metricbeat
        image: docker.elastic.co/beats/metricbeat:7.8.1
        args: [
          "-c", "/etc/metricbeat.yml",
          "-e",
          "-system.hostfs=/hostfs",
        ]
        env:
        - name: LOGSTASH_URL
          value: "${LOGSTASH_URL}"
        - name: ENVIRONMENT
          value: "${ENVIRONMENT}"
        - name: NODE_NAME
          valueFrom:
            fieldRef:
              fieldPath: spec.nodeName
        securityContext:
          runAsUser: 0
          # If using Red Hat OpenShift uncomment this:
          #privileged: true
        resources:
          limits:
            memory: 200Mi
          requests:
            cpu: 100m
            memory: 100Mi
        volumeMounts:
        - name: config
          mountPath: /etc/metricbeat.yml
          readOnly: true
          subPath: metricbeat.yml
        - name: fields
          mountPath: /usr/share/metricbeat/fields.yml
          readOnly: true
          subPath: fields.yml
        - name: data
          mountPath: /usr/share/metricbeat/data
        - 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
        - name: elkcrt
          mountPath: /etc/pki/tls/certs/
          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-config
      - name: fields
        configMap:
          defaultMode: 0600
          name: metricbeat-fields
      - name: modules
        configMap:
          defaultMode: 0600
          name: metricbeat-daemonset-modules
      - name: data
        hostPath:
          path: /var/lib/metricbeat-data
          type: DirectoryOrCreate
      - name: elkcrt
        configMap:
          defaultMode: 0600
          name: elkcrt
          items:
            - key: logstash-filebeat.crt
              path: logstash-filebeat.crt
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: metricbeat-deployment-modules
  namespace: kube-system
  labels:
    k8s-app: metricbeat
data:
  # This module requires `kube-state-metrics` up and running under `kube-system` namespace
  kubernetes.yml: |-
    - module: kubernetes
      metricsets:
        - state_node
        - state_deployment
        - state_replicaset
        - state_pod
        - state_container
        - state_cronjob
        - state_resourcequota
        # Uncomment this to get k8s events:
        #- event
      period: 10s
      host: ${NODE_NAME}
      hosts: ["kube-state-metrics:8080"]
---
# Deploy singleton instance in the whole cluster for some unique data sources, like kube-state-metrics
apiVersion: apps/v1
kind: Deployment
metadata:
  name: metricbeat
  namespace: kube-system
  labels:
    k8s-app: metricbeat
spec:
  selector:
    matchLabels:
      k8s-app: metricbeat
  template:
    metadata:
      labels:
        k8s-app: metricbeat
    spec:
      nodeSelector:
        role: master
      serviceAccountName: metricbeat
      hostNetwork: true
      dnsPolicy: ClusterFirstWithHostNet
      containers:
      - name: metricbeat
        image: docker.elastic.co/beats/metricbeat:7.8.1
        args: [
          "-c", "/etc/metricbeat.yml",
          "-e",
        ]
        env:
        - name: LOGSTASH_URL
          value: "${LOGSTASH_URL}"
        - name: ENVIRONMENT
          value: "${ENVIRONMENT}"
        - name: NODE_NAME
          valueFrom:
            fieldRef:
              fieldPath: spec.nodeName
        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: fields
          mountPath: /usr/share/metricbeat/fields.yml
          readOnly: true
          subPath: fields.yml
        - name: modules
          mountPath: /usr/share/metricbeat/modules.d
          readOnly: true
        - name: elkcrt
          mountPath: /etc/pki/tls/certs/
          readOnly: true
      volumes:
      - name: config
        configMap:
          defaultMode: 0600
          name: metricbeat-config
      - name: fields
        configMap:
          defaultMode: 0600
          name: metricbeat-fields
      - name: modules
        configMap:
          defaultMode: 0600
          name: metricbeat-deployment-modules
      - name: elkcrt
        configMap:
          defaultMode: 0600
          name: elkcrt
          items:
            - key: logstash-filebeat.crt
              path: logstash-filebeat.crt
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: metricbeat
subjects:
- kind: ServiceAccount
  name: metricbeat
  namespace: kube-system
roleRef:
  kind: ClusterRole
  name: metricbeat
  apiGroup: rbac.authorization.k8s.io
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: metricbeat
  labels:
    k8s-app: metricbeat
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"]
- apiGroups:
  - ""
  resources:
  - nodes/stats
  verbs:
  - get
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: metricbeat
  namespace: kube-system
  labels:
    k8s-app: metricbeat
---