---
apiVersion: v1
kind: ConfigMap
metadata:
  name: filebeat-config
  namespace: kube-system
  labels:
    k8s-app: filebeat
data:
  filebeat.yml: |-
    # To enable hints based autodiscover, remove `filebeat.inputs` configuration and uncomment this:
    filebeat.autodiscover:
      providers:
        - type: kubernetes
          node: ${NODE_NAME}
          hints.enabled: true
          hints.default_config:
            type: container
            paths:
              - /var/log/containers/*${data.kubernetes.container.id}.log

    processors:
      - add_cloud_metadata:
      - add_host_metadata:

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

    logging:
      level: debug
      metrics.enabled: false
      selectors:
        - "*"
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: filebeat
  namespace: kube-system
  labels:
    k8s-app: filebeat
spec:
  selector:
    matchLabels:
      k8s-app: filebeat
  template:
    metadata:
      labels:
        k8s-app: filebeat
      annotations:
        co.elastic.logs/enabled: "false"
    spec:
      serviceAccountName: filebeat
      terminationGracePeriodSeconds: 30
      hostNetwork: true
      dnsPolicy: ClusterFirstWithHostNet
      imagePullSecrets:
        - name: blake-creds
      containers:
      - name: filebeat
        image: blakerouse/elastic:filebeat-master
        args: [
          "run", "-c", "/etc/filebeat.yml", "-e"
        ]
        env:
        - name: ELASTIC_CLOUD_ID
          value: "***"
        - name: ELASTIC_CLOUD_AUTH
          value: "***"
        - 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/filebeat.yml
          readOnly: true
          subPath: filebeat.yml
        - name: data
          mountPath: /usr/share/filebeat/data
        - name: varlibdockercontainers
          mountPath: /var/lib/docker/containers
          readOnly: true
        - name: varlog
          mountPath: /var/log
          readOnly: true
      volumes:
      - name: config
        configMap:
          defaultMode: 0600
          name: filebeat-config
      - name: varlibdockercontainers
        hostPath:
          path: /var/lib/docker/containers
      - name: varlog
        hostPath:
          path: /var/log
      - name: data
        hostPath:
          path: /var/lib/filebeat-data
          type: DirectoryOrCreate
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: filebeat
subjects:
- kind: ServiceAccount
  name: filebeat
  namespace: kube-system
roleRef:
  kind: ClusterRole
  name: filebeat
  apiGroup: rbac.authorization.k8s.io
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: filebeat
  labels:
    k8s-app: filebeat
rules:
- apiGroups: [""] # "" indicates the core API group
  resources:
  - namespaces
  - pods
  verbs:
  - get
  - watch
  - list
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: filebeat
  namespace: kube-system
  labels:
    k8s-app: filebeat
---

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: elasticsearch-data
spec:
  accessModes: [ "ReadWriteOnce" ]
  resources:
    requests:
      storage: 5Gi
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: elasticsearch-config
data:
  elasticsearch.yml: |
    discovery.type: single-node
    xpack.security.enabled: false
    xpack.monitoring.enabled: false
  ES_JAVA_OPTS: -Xms256m -Xmx256m
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: elasticsearch
spec:
  replicas: 1
  selector:
    matchLabels:
      app: elasticsearch
  template:
    metadata:
      labels:
        app: elasticsearch
      annotations:
        co.elastic.logs/enabled: "true"
        co.elastic.logs/module: elasticsearch
    spec:
      securityContext:
        fsGroup: 1000
      containers:
        - name: elasticsearch
          resources:
            requests:
              memory: 500Mi
          securityContext:
            privileged: true
            runAsUser: 1000
            capabilities:
              add:
                - IPC_LOCK
                - SYS_RESOURCE
          image: docker.elastic.co/elasticsearch/elasticsearch:7.6.1
          env:
            - name: ES_JAVA_OPTS
              valueFrom:
                configMapKeyRef:
                  name: elasticsearch-config
                  key: ES_JAVA_OPTS
          readinessProbe:
            httpGet:
              scheme: HTTP
              path: /_cluster/health?local=true
              port: 9200
            initialDelaySeconds: 5
          ports:
            - containerPort: 9200
              name: es-http
            - containerPort: 9300
              name: es-transport
          volumeMounts:
            - name: es-data
              mountPath: /usr/share/elasticsearch/data
            - name: elasticsearch-config
              mountPath: /usr/share/elasticsearch/config/elasticsearch.yml
              subPath: elasticsearch.yml
      volumes:
        - name: elasticsearch-config
          configMap:
            name: elasticsearch-config
            items:
              - key: elasticsearch.yml
                path: elasticsearch.yml
        - name: es-data
          persistentVolumeClaim:
            claimName: elasticsearch-data