apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: elasticsearch
  namespace: elk-stack
spec:
  serviceName: elasticsearch
  replicas: 1
  selector:
    matchLabels:
      app: elasticsearch
  template:
    metadata:
      labels:
        app: elasticsearch
    spec:
      containers:
        - name: elasticsearch
          image: docker.elastic.co/elasticsearch/elasticsearch:8.11.0
          ports:
            - containerPort: 9200
            - containerPort: 9300
          env:
            - name: discovery.type
              value: single-node
            - name: xpack.security.enabled
              value: "false"
            - name: ES_JAVA_OPTS
              value: "-Xms512m -Xmx512m"
          volumeMounts:
            - name: elasticsearch-data
              mountPath: /usr/share/elasticsearch/data
            - name: elasticsearch-config
              mountPath: /usr/share/elasticsearch/config/elasticsearch.yml
              subPath: elasticsearch.yml
      volumes:
        - name: elasticsearch-data
          persistentVolumeClaim:
            claimName: elasticsearch-data
        - name: elasticsearch-config
          configMap:
            name: elasticsearch-config
---
apiVersion: v1
kind: Service
metadata:
  name: elasticsearch
  namespace: elk-stack
spec:
  type: ClusterIP
  selector:
    app: elasticsearch
  ports:
    - name: http
      port: 9200
      targetPort: 9200
    - name: transport
      port: 9300
      targetPort: 9300