ElasticSearch集群搭建

• 环境准备
• 配置文件
• • docker-compose.yml
  • 启动命令
• 验证是否搭建成功
• 说明

1. VmWare WorkStation 16.2.3
2. Ubuntu 22.04
3. Docker
4. docker-compose工具

version: '3'
services:
  es01:
    image: elasticsearch:7.11.2
    container_name: es01
    environment:
      - node.name=es01
      - cluster.name=es-docker-cluster
      - bootstrap.memory_lock=true
      - "ES_JAVA_OPTS=-Xms256m -Xmx256m"
      - discovery.seed_hosts=es02,es03
      - cluster.initial_master_nodes=es01,es02,es03
    ulimits:
      memlock:
        soft: -1
        hard: -1
    volumes:
      - ${HOME}/docker/es01_data:/usr/share/elasticsearch/data
    ports:
      - 9200:9200
      - 9300:9300
    networks:
      - elastic
  es02:
    image: elasticsearch:7.11.2
    container_name: es02
    environment:
      - node.name=es02
      - cluster.name=es-docker-cluster
      - bootstrap.memory_lock=true
      - "ES_JAVA_OPTS=-Xms256m -Xmx256m"
      - discovery.seed_hosts=es01,es03
      - cluster.initial_master_nodes=es01,es02,es03
    ulimits:
      memlock:
        soft: -1
        hard: -1
    volumes:
      - ${HOME}/docker/es02_data:/usr/share/elasticsearch/data
    ports:
      - 9201:9200
      - 9301:9300
    networks:
      - elastic
  es03:
    image: elasticsearch:7.11.2
    container_name: es03
    environment:
      - node.name=es03
      - cluster.name=es-docker-cluster
      - bootstrap.memory_lock=true
      - "ES_JAVA_OPTS=-Xms256m -Xmx256m"
      - discovery.seed_hosts=es01,es02
      - cluster.initial_master_nodes=es01,es02,es03
    ulimits:
      memlock:
        soft: -1
        hard: -1
    volumes:
      - ${HOME}/docker/es03_data:/usr/share/elasticsearch/data
    ports:
      - 9202:9200
      - 9302:9300
    networks:
      - elastic
networks:
  elastic:
    driver: bridge

docker-compose up -d es01
docker-compose up -d es02
docker-compose up -d es03

命令行输入以下命令

curl -X GET http://127.0.0.1:9200/_cat/nodes?v

当出现以下结果，说明搭建成功

1. 该文本在同一台机器上配置了3个实例的ES集群：es01,es02,es03
2. 每个实例的cluster的cluster.name需要一致
3. cluster.initial_master_nodes设置当前集群的所有节点
4. 由于在同一台机器上配置，映射到主机节点不同
5. 启动时，如果几乎同时启动,即使用以下命令启动

docker-compose up -d es01 es02 es03

会报如下异常
具体原因待后续学习后再补充