日常使用场景
- 商城商品搜索
- 百度关键字搜索展示高亮
- GitHub项目搜索等
什么是Elasticsearch
Elasticsearch 是一个分布式、RESTful 风格的搜索和数据分析引擎，可以用来实现搜索、日志统计、分析、系统监控等功能。
Elastic Stack
什么是Elastic Stack（ELK）
如果你没有听说过Elastic Stack，那你一定听说过ELK，实际上ELK是三款软件的简称，分别是Elasticsearch、Logstash、Kibana组成，在发展的过程中，又有新成员Beats的加入，所以就形成了Elastic Stack。所以说，ELK是旧的称呼，Elastic Stack是新的名字。
Elastic Stack组成
ES的安装
- 点击下载
- 配置文件，进入config目录
- 修改
elasticsearch.yml文件
# ---------------------------------- Cluster -----------------------------------
#
# Use a descriptive name for your cluster:
# 设置集群名称 同一肌群名称相同即可
cluster.name: haohong-application
#
#
# ----------------------------------- Paths ------------------------------------
#
# Path to directory where to store the data (separate multiple locations by comma):
# 挂载逻辑卷，绑定es的数据目录
path.data: /data/es/data
#
# Path to log files:
# 挂载逻辑卷，绑定es的日志目录
path.logs: /data/es/logs
#
# ---------------------------------- Network -----------------------------------
#
# By default Elasticsearch is only accessible on localhost. Set a different
# address here to expose this node on the network:
# 非localhost为生产环境，会对环境的要求比较高 设置ip地址，任意网络均可访问
network.host: localhost
#
# By default Elasticsearch listens for HTTP traffic on the first free port it
# finds starting at 9200. Set a specific HTTP port here:
# 端口设置
#http.port: 9200
- 修改
jvm.options文件
## 根据自己机器情况修改
## -Xms2g
## -Xmx2g
- 进入bin目录启动
- 浏览器访问验证启动
http://localhost:9200/
{
"name": "DESKTOP-FTIIK3E",
"cluster_name": "haohong-application",
"cluster_uuid": "ggJwIk7QS6WFex1_ybzwOA",
"version": {
"number": "7.15.0",
"build_flavor": "default",
"build_type": "zip",
"build_hash": "79d65f6e357953a5b3cbcc5e2c7c21073d89aa29",
"build_date": "2021-09-16T03:05:29.143308416Z",
"build_snapshot": false,
"lucene_version": "8.9.0",
"minimum_wire_compatibility_version": "6.8.0",
"minimum_index_compatibility_version": "6.0.0-beta1"
},
"tagline": "You Know, for Search"
}
