elasticsearch

java环境配置网上自己找文档

# java -version
java version "1.8.0_121"
Java(TM) SE Runtime Environment (build 1.8.0_121-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode)

下载 elasticsearch

analysis-ik的最新只适用6.7.0所以这边elasticsearch只安装6.7.0版本

# wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.7.0.rpm

安装 elasticsearch

# rpm -ivh elasticsearch-6.7.0.rpm

设置开机启动

# systemctl daemon-reload
# systemctl enable elasticsearch.service
# systemctl start elasticsearch

配置文件

# vim /etc/elasticsearch/elasticsearch.yml

//外网可访问
network.host: 0.0.0.0 
//访问端口
http.port: 9200

检测端口占用情况 netstat -plntu
如果半天没启动起来有可能是内存不够出错，改成512m

# vim /etc/elasticsearch/jvm.options

-Xms512m
-Xmx512m

//保存重启
#systemctl restart elasticsearch

查看状态

curl '127.0.0.1:9200'

说明已经安装成功

analysis-ik

elasticsearch自带分词效果

# curl -H 'Content-Type: application/json'  -XGET '127.0.0.1:9200/_analyze?pretty' -d '{"text":"我是中国人"}'

analysis-ik 分词效果

#  curl -H 'Content-Type: application/json'  -XGET '127.0.0.1:9200/_analyze?pretty' -d '{"analyzer":"ik_max_word","text":"我是中国人"}'

安装 ik-analyzer

# /usr/share/elasticsearch/bin/elasticsearch-plugin install https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v6.7.0/elasticsearch-analysis-ik-6.7.0.zip
//重启elasticsearch
#systemctl restart elasticsearch

自定义词库

添加自定义字典文件

vim /etc/elasticsearch/analysis-ik/IKAnalyzer.cfg.xml

添加字典

echo '我是' > /etc/elasticsearch/analysis-ik/diy.dic

//保存重启
systemctl restart elasticsearch

elasticsearch-head

安装

git clone git://github.com/mobz/elasticsearch-head.git
cd elasticsearch-head
npm install
npm run start

修改配置文件

vim _site/app.js
# 修改 『http://localhost:9200』字段到本机ES端口与IP

修改elasticsearch支持跨域访问并重启

vim /etc/elasticsearch/elasticsearch.yml
http.cors.enabled: true #最下方添加
http.cors.allow-origin: "*"

systemctl restart elasticsearch