Docker(五)：Docker安装Elasticsearch

查找ElasticSearch镜像

镜像仓库

https://hub.docker.com/

下拉镜像

docker pull elasticsearch:7.7.0

查看镜像

docker images

创建Elasticsearch容器

创建所需文件

mkdir -p /mydata/elasticsearch/config

mkdir -p /mydata/elasticsearch/data

echo "http.host: 0.0.0.0">>/mydata/elasticsearch/config/elasticsearch.yml

注意：http.host: 0.0.0.0 冒号后有一空格。

文件夹赋权

chmod -R 777 elasticsearch/

命令启动

docker run --name elasticsearch -p 9200:9200 
 -p 9300:9300 
 -e "discovery.type=single-node" 
 -e ES_JAVA_OPTS="-Xms64m -Xmx128m" 
  -v /mydata/elasticsearch/config/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml 
 -v /mydata/elasticsearch/data:/usr/share/elasticsearch/data 
 -v /mydata/elasticsearch/plugins:/usr/share/elasticsearch/plugins 
 -d elasticsearch:7.7.0

参数说明

--name elasticsearch：将容器命名为 elasticsearch
-p 9200:9200：将容器的9200端口映射到宿主机9200端口
-p 9300:9300：将容器的9300端口映射到宿主机9300端口，目的是集群互相通信
-e "discovery.type=single-node"：单例模式
-e ES_JAVA_OPTS="-Xms64m -Xmx128m"：配置内存大小
-v /mydata/elasticsearch/config/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml：将配置文件挂载到宿主机
-v /mydata/elasticsearch/data:/usr/share/elasticsearch/data：将数据文件夹挂载到宿主机
-v /mydata/elasticsearch/plugins:/usr/share/elasticsearch/plugins：将插件目录挂载到宿主机(需重启)
-d elasticsearch:7.7.0：后台运行容器，并返回容器ID

docker-compose启动

version: '2'
services:
  elasticsearch:
    container_name: elasticsearch
    image: elasticsearch:7.7.0
    ports:
      - "9200:9200"
    volumes:
      - /mydata/elasticsearch/config/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml
      - /mydata/elasticsearch/data:/usr/share/elasticsearch/data
      - /mydata/elasticsearch/plugins:/usr/share/elasticsearch/plugins
    environment:
      - "ES_JAVA_OPTS=-Xms64m -Xmx128m"
      - "discovery.type=single-node"
      - "COMPOSE_PROJECT_NAME=elasticsearch-server"
    restart: always

查看容器

docker ps -a

验证是否成功

curl http://192.168.0.50:9200/

{
  "name" : "550eca5cf3b2",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "1mP9IJU3TUy_C2DZMfKGBg",
  "version" : {
    "number" : "7.7.0",
    "build_flavor" : "default",
    "build_type" : "docker",
    "build_hash" : "81a1e9eda8e6183f5237786246f6dced26a10eaf",
    "build_date" : "2020-05-12T02:01:37.602180Z",
    "build_snapshot" : false,
    "lucene_version" : "8.5.1",
    "minimum_wire_compatibility_version" : "6.8.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}

Docker启动容器自启

docker update elasticsearch --restart=always