Docker搭建Elasticsearch 7.x集群

记录通过Docker-Compose搭建es7集群遇到的坑，鉴于百度到的基本是es6的集群，直接复制黏贴基本无效，使用的docker-compose.yml如下：

```

version: '3'

services:

  elasticsearch:

    image: elasticsearch:7.3.1

    container_name: elasticsearch

    restart: always

    environment:

      - node.name=235

      - network.publish_host=10.100.103.235

      - network.host=0.0.0.0

      - discovery.seed_hosts=10.100.103.233,10.100.103.234,10.100.103.235

      - cluster.initial_master_nodes=10.100.103.233,10.100.103.234,10.100.103.235

      - cluster.name=es-cluster

      - bootstrap.memory_lock=true

      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"

    ports:

      - 9200:9200

      - 9300:9300

    ulimits:

      memlock:

        soft: -1

        hard: -1

```

搭建完成之后调用http://10.100.103.233:9200/_cluster/health?pretty，检查集群是否运行正常