1. Install:

   • https://www.elastic.co/guide/en/elasticsearch/reference/current/install-elasticsearch.html

2. Settings:

   • https://www.elastic.co/guide/en/elasticsearch/reference/current/settings.html
   • https://www.elastic.co/guide/en/elasticsearch/reference/current/important-settings.html

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Config Path

目录	配置文件	描述
bin		脚本文件，包括启动 elasticsearch，安装插件。运行统计数据等
config	elasticsearch.yml	集群配置文件，user，role based 相关配置
JDK		Java 运行坏境
data	path.data	数据文件
lib		Java 类库
logs	path.log	日志文件
modules		包含所有 ES 模块
plugins		包含所有已安装插件

• config/jvm.options

  • Xmx 和 Xms 设置 成一样
  • Xmx 不要超过机器内存的 50％
  • 不要超过 30GB - https://www.elastic.co/blog/a-heap-of-trouble

• running in single node with docker

docker run -it --name es-single -p 127.0.0.1:9200:9200 -p 127.0.0.1:9300:9300 -e "discovery.type=single-node" docker.elastic.co/elasticsearch/elasticsearch:7.17.26

• install plugin

bin/elasticsearch-plugin list
bin/elasticsearch-plugin install analysis-icu

• cat plugin status by RESTFul api

curl 127.0.0.1:9200/_cat/plugins
# e63541f2dce6 analysis-icu 7.17.26

• cat nodes status

curl 127.0.0.1:9200/_cat/nodes
# 172.17.0.2 8 94 2 1.56 2.54 2.55 cdfhilmrstw * e63541f2dce6