Docker搭建es集群（超简单）

编写docker-compose.yml

version: '2.2'
services:
  es01:
    image: elasticsearch:7.7.0
    container_name: es01
    environment:
      - node.name=es01
      - cluster.name=es-docker-cluster
      - discovery.seed_hosts=es02,es03
      - cluster.initial_master_nodes=es01,es02,es03
      - bootstrap.memory_lock=true
      - "ES_JAVA_OPTS=-Xms300m -Xmx300m"
    ulimits:
      memlock:
        soft: -1
        hard: