部署 ElasticSearch（8.x）

ES 8.7

部署说明：通过 nodeSelector 固定到 worker3 节点上。并使用 worker3 上的原生文件系统目录 /.data

部署文件说明

通过环境变量指定 JVM 大小， ES 密码等
通过 config 定制 elasticsearch.yml 的配置，比如 0.0.0.0 外部网络访问
有使用 LoadBalancer 类型的 Service，通过 externalIPs 指定外部 IP
通过 hostPath 挂载宿主机的目录，用于持久化数据提升IO性能
部署于 middleware 命名空间
镜像使用 registry.cn-hongkong.aliyuncs.com/jansora/elasticsearch:8.7.0，拷贝自官方镜像，无改动

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: elasticsearch-1
  namespace: middleware
spec:
  selector:
    matchLabels:
      app: elasticsearch-1
  replicas: 1
  template:
    metadata:
      labels:
        app: elasticsearch-1
    spec:
      nodeSelector:
        worker: worker3
      containers:
        - name: elasticsearch-1
          image: registry.cn-hongkong.aliyuncs.com/jansora/elasticsearch:8.7.0
          imagePullPolicy: IfNotPresent
          env:
            - name: ES_JAVA_OPTS
#              value: "-Xms1024m -Xmx1024m "
#              value: "-Xms2048m -Xmx2048m "
#              value: "-Xms1536m -Xmx1536m "
              value: "-Xms4096m -Xmx4096m "
            - name: ES_PORT
              value: "9200"
            - name: ELASTIC_PASSWORD
              value: "xxxxxx"
          ports:
            - containerPort: 9200
          volumeMounts:
            - name: host-path
              subPath: 'elasticsearch/8.7.0/data'
              mountPath: '/usr/share/elasticsearch/data'
            - name: host-path
              subPath: 'elasticsearch/8.7.0/config/analysis-ik'
              mountPath: '/usr/share/elasticsearch/config/analysis-ik'
            - name: host-path
              subPath: 'elasticsearch/8.7.0/plugins'
              mountPath: '/usr/share/elasticsearch/plugins'
            - name: host-path
              subPath: 'elasticsearch/8.7.0/logs'
              mountPath: '/usr/share/elasticsearch/logs'
            - name: config-volume
              mountPath: /usr/share/elasticsearch/config/elasticsearch.yml # 具体路径请参考官方文档
              subPath: elasticsearch.yml
      volumes:
        - name: config-volume
          configMap:
            name: elasticsearch-config
        - name: host-path
          hostPath:
            type: DirectoryOrCreate
            path: /.data/
  serviceName: elasticsearch-service
---
 
# 创建 Service 由 kubernetes 来对多个 broker 做负载均衡
apiVersion: v1
kind: Service
metadata:
  labels:
    app: elasticsearch-1
  name: elasticsearch-1-service
  namespace: middleware
spec:
  type: LoadBalancer
  externalIPs:
    - 192.168.36.9
  ports:
    - port: 9200
      protocol: TCP
  selector:
    app: elasticsearch-1
 
 
---
 
 
# 创建 configmap
apiVersion: v1
kind: ConfigMap
metadata:
  name: elasticsearch-config
  namespace: middleware
data:
  elasticsearch.yml: |
    cluster.initial_master_nodes: ["elasticsearch-1-0"]
    xpack.security.enabled: false
    network.host: 0.0.0.0

集群缩容部署 ElasticSearch（8.x）