【Elasticsearch】安装配置与使用

安装Elasticsearch:

1. 下载Elasticsearch:

wget -qO - https://artifacts.elastic.co/GPG-KEY-elasticsearch | sudo apt-key add -
sudo apt-get install apt-transport-https
echo "deb https://artifacts.elastic.co/packages/7.x/apt stable main" | sudo tee -a /etc/apt/sources.list.d/elastic-7.x.list
sudo apt-get update && sudo apt-get install elasticsearch

2. 启动Elasticsearch服务:

sudo systemctl start elasticsearch.service

3. 设置Elasticsearch开机自启:

sudo systemctl enable elasticsearch.service

配置Elasticsearch:

编辑配置文件 /etc/elasticsearch/elasticsearch.yml，根据需要进行配置。

使用Elasticsearch:

1. 通过HTTP请求与Elasticsearch交互:

curl -X GET "localhost:9200/"

2. 通过Elasticsearch的命令行工具 elasticsearch-cli:

elasticsearch-cli node attributes

3. 使用Elasticsearch的客户端库，如Python的elasticsearch-py:

from elasticsearch import Elasticsearch
es = Elasticsearch("http://localhost:9200")
response = es.search(index="my-index", body={"query": {"match_all": {}}})
print(response)

请根据实际的操作系统和Elasticsearch版本调整上述命令。