Docker(五)：Docker安裝Elasticsearch

查找ElasticSearch鏡像

鏡像倉庫

https://hub.docker.com/

下拉鏡像

docker pull elasticsearch:7.7.0

查看鏡像

docker images

創建Elasticsearch容器

創建所需文件

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 冒號后有一空格。

文件夾賦權

chmod -R 777 elasticsearch/

命令啟動

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

參數說明

--name elasticsearch：將容器命名為 elasticsearch
-p 9200:9200：將容器的9200端口映射到宿主機9200端口
-p 9300:9300：將容器的9300端口映射到宿主機9300端口，目的是集群互相通信
-e "discovery.type=single-node"：單例模式
-e ES_JAVA_OPTS="-Xms64m -Xmx128m"：配置內存大小
-v /mydata/elasticsearch/config/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml：將配置文件掛載到宿主機
-v /mydata/elasticsearch/data:/usr/share/elasticsearch/data：將數據文件夾掛載到宿主機
-v /mydata/elasticsearch/plugins:/usr/share/elasticsearch/plugins：將插件目錄掛載到宿主機(需重啟)
-d elasticsearch:7.7.0：后台運行容器，並返回容器ID

docker-compose啟動

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

驗證是否成功

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啟動容器自啟

docker update elasticsearch --restart=always