docker 安装es/elasticsearch7.8.0

 依次执行以下命令

docker pull elasticsearch:7.8.0

mkdir -p /mydata/elasticsearch/{config,data,plugins}
echo "http.host: 0.0.0.0" > /mydata/elasticsearch/config/elasticsearch.yml
#不给权限启动会报错
chmod -R 775 /mydata/elasticsearch/

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:7.8.0

# 查看集群健康状态
curl 127.0.0.1:9200/_cat/health?v
# 查看节点健康状态
curl 127.0.0.1:9200/_cat/nodes?v
# 查看索引信息
curl 127.0.0.1:9200/_cat/indices?v

执行 curl http://127.0.0.1:9200/ 查看版本

{
  "name" : "elasticsearch",
  "cluster_name" : "docker-cluster",
  "cluster_uuid" : "vkFxD09DQn6Uq9LZI4lGHQ",
  "version" : {
    "number" : "7.8.0",
    "build_flavor" : "default",
    "build_type" : "docker",
    "build_hash" : "757314695644ea9a1dc2fecd26d1a43856725e65",
    "build_date" : "2020-06-14T19:35:50.234439Z",
    "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"
}