发布于 3个月前

单节点ElasticSearch 7 docker-compose.yml

Elasticsearch 7 集群启动

在开发环境,往往只需要启动单节点的ElasticSearch进行开发。对于ElasticSearch 6,启动一个单节点集群和多节点集群是相同的。

从ElasticSearch 7开始,首次启动集群,需要在集群的主节点中明确定义初始主节点集(即设置参数cluster.initial_master_nodes),集群启动过程中做一个引导启动检查,称为bootstrap checks。对于单节点,按集群默认方式启动,在bootstrap check阶段就会失败。

单节点错误类似:

ERROR: [1] bootstrap checks failed
[1]: the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes] must be configured

单节点启动

ElasticSearche 7设置为开发模式,启动单节点,需要设置参数discovery.typesingle-node。docker-compose.yml 示例如下

version: '3.7'

services:

  elasticsearch:
    image: docker.elastic.co/elasticsearch/elasticsearch:7.16.0
    container_name: elasticsearch
    environment:
      - xpack.security.enabled=false
      - discovery.type=single-node
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
    ulimits:
      memlock:
        soft: -1
        hard: -1
      nofile:
        soft: 65536
        hard: 65536
    cap_add:
      - IPC_LOCK
    volumes:
      - elasticsearch-data:/usr/share/elasticsearch/data
      - elasticsearch-plugins:/usr/share/elasticsearch/plugins
    ports:
      - 9200:9200
      - 9300:9300
    networks:
      - elastic 

volumes:
  elasticsearch-data:
    driver: local
  elasticsearch-plugins:
    driver: local

networks:
  elastic:
    driver: bridge

这是一个单节点版,可以在开发环境中使用的一个elasticsearch 7 docker-compose.yml。

其中:

  • 9200作为Http协议,主要用于外部通讯
  • 9300作为Tcp协议,jar之间就是通过tcp协议通讯
  • ES集群之间是通过9300进行通讯
  • xpack.security.enabled设置为false,表示禁止xpack
  • volumes可以根据实际来设置一个本地的路径。
  • ES_JAVA_OPTS=-Xms512m -Xmx512m设置ES允许的jvm大小

启动单机集群

启动elasticsearch 单机集群,进入docker-compose.yml文件同级目录,执行:

docker-compose up -d

停止elastsearch集群,进入docker-compose.yml文件同级目录,执行:

docker-compose down

如果想停止集群的时候,同时删除volume,执行:

docker-compse down -v

启动后测试:

sudo curl http://127.0.0.1:9200/

显示结果类似,则表示部署成功:

{
  "name" : "8f0257230088",
  "cluster_name" : "docker-cluster",
  "cluster_uuid" : "5dsUbbM7SFWszH4n8nbTbA",
  "version" : {
    "number" : "7.16.0",
    "build_flavor" : "default",
    "build_type" : "docker",
    "build_hash" : "6fc81662312141fe7691d7c1c91b8658ac17aa0d",
    "build_date" : "2021-12-02T15:46:35.697268109Z",
    "build_snapshot" : false,
    "lucene_version" : "8.10.1",
    "minimum_wire_compatibility_version" : "6.8.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}
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