ElasticSearch 8.12.0 K8S部署实践【超详细】【一站式】

以下是一个简化的Elasticsearch 8.12.0在Kubernetes上的部署实例，包括配置和部署文件：

1. 创建Elasticsearch持久卷声明 (PVC) - elasticsearch-pvc.yaml:

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: elasticsearch-pvc
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi

2. 创建Elasticsearch部署 (Deployment) - elasticsearch-deployment.yaml:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: elasticsearch
spec:
  replicas: 3
  selector:
    matchLabels:
      app: elasticsearch
  template:
    metadata:
      labels:
        app: elasticsearch
    spec:
      containers:
        - name: elasticsearch
          image: docker.elastic.co/elasticsearch/elasticsearch:8.12.0
          resources:
            limits:
              memory: 2Gi
              cpu: 1
            requests:
              memory: 2Gi
              cpu: 1
          env:
            - name: discovery.type
              value: k8s
            - name: ELASTIC_PASSWORD
              value: "yourpassword"
            - name: replicaShards
              value: "1"
          ports:
            - name: http
              containerPort: 9200
            - name: inter-node
              containerPort: 9300
          volumeMounts:
            - name: elasticsearch-pvc
              mountPath: /usr/share/elasticsearch/data
      volumes:
        - name: elasticsearch-pvc
          persistentVolumeClaim:
            claimName: elasticsearch-pvc

3. 创建Elasticsearch服务 (Service) - elasticsearch-service.yaml:

apiVersion: v1
kind: Service
metadata:
  name: elasticsearch
spec:
  selector:
    app: elasticsearch
  ports:
    - name: http
      port: 9200
      targetPort: http
    - name: inter-node
      port: 9300
      targetPort: inter-node

部署到Kubernetes集群时，首先创建PVC，然后创建Deployment和Service。确保你的Kubernetes集群已经准备好，并且kubectl 命令行工具已经配置好能够访问该集群。

部署步骤示例：

kubectl apply -f elasticsearch-pvc.yaml
kubectl apply -f elasticsearch-deployment.yaml
kubectl apply -f elasticsearch-service.yaml

这样就会在Kubernetes上部署一个具有3个副本的Elasticsearch集群。记得替换yourpassword为你自己的密码，并根据需要调整资源限制和副本数量。