elasticsearch.yaml

kind: Service
apiVersion: v1
metadata:
  annotations:
    prometheus.io/scrape: 'true'
    prometheus.io/port: '9108'
  name: elasticsearch
  labels:
    app: elasticsearch
spec:
  type: NodePort
  ports:
    - port: 9200
      nodePort: 30920
      protocol: TCP
      name: http
    - port: 9300
      name: node-to-node
      protocol: TCP
    - port: 9108
      name: metrics
      protocol: TCP
  selector:
    app: elasticsearch
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: elasticsearch
spec:
  serviceName: elasticsearch
  replicas: 1
  selector:
    matchLabels:
      app: elasticsearch
  template:
    metadata:
      labels:
        app: elasticsearch
    spec:
      affinity:
        podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            - labelSelector:
                matchExpressions:
                  - key: app
                    operator: In
                    values:
                    - elasticsearch
              topologyKey: kubernetes.io/hostname
      initContainers:
        - name: sysctl
          image: alpine:3.8
          command:
            - sh
            - -c
            - "sysctl -w vm.max_map_count=262144 && chown -R 1000:1000 /usr/share/elasticsearch/data"
          volumeMounts:
            - name: es-data
              mountPath: /usr/share/elasticsearch/data
          imagePullPolicy: IfNotPresent
          resources:
            limits:
              cpu: 100m
              memory: 200Mi
            requests:
              cpu: 100m
              memory: 200Mi
          securityContext:
            privileged: true
      containers:
        - name: exporter
          image: justwatch/elasticsearch_exporter:1.0.2
          args:
          - '-es.uri=http://localhost:9200'
          ports:
            - containerPort: 9108
              name: metrics
          resources:
            limits:
              cpu: 200m
              memory: 400Mi
            requests:
              cpu: 100m
              memory: 200Mi
        - name: elasticsearch
          image: docker.elastic.co/elasticsearch/elasticsearch:6.4.1
          env:
            - name: http.host
              value: "0.0.0.0"
            - name: ES_JAVA_OPTS
              value: -Xms2G -Xmx2G
            - name: bootstrap.memory_lock
              value: "false"
            - name: cluster.name
              value: elasticsearch
            - name: node.name
              valueFrom:
                fieldRef:
                  fieldPath: metadata.name
            - name: discovery.zen.ping.unicast.hosts
              value: "elasticsearch-0.elasticsearch"
          ports:
            - containerPort: 9200
              name: http
            - containerPort: 9300
              name: node-to-node
          volumeMounts:
            - name: es-data
              mountPath: /usr/share/elasticsearch/data
          readinessProbe:
            httpGet:
                path: /_cat/health
                port: http
            initialDelaySeconds: 20
            periodSeconds: 5
          livenessProbe:
            failureThreshold: 5
            httpGet:
              path: /_cat/health
              port: http
            initialDelaySeconds: 60
            periodSeconds: 10
            timeoutSeconds: 5
  volumeClaimTemplates:
    - metadata:
        name: es-data
      spec:
        accessModes: [ "ReadWriteOnce" ]
        resources:
          requests:
            storage: 500m