新聞中心
一、Elasticsearch簡介
Elasticsearch是一個分布式、RESTful風(fēng)格的搜索和分析引擎,它可以用于存儲、搜索和分析大量數(shù)據(jù),Elasticsearch是基于Apache Lucene庫構(gòu)建的,具有高可用性、高性能和易擴(kuò)展性等特點,它可以用于各種場景,如日志分析、實時數(shù)據(jù)分析、全文檢索等。

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二、安裝前提
在安裝Elasticsearch之前,需要確保以下幾點:
1. 系統(tǒng)已安裝Java環(huán)境,推薦使用Java 8或更高版本,可以通過以下命令檢查Java版本:
java -version
2. 確保已安裝并配置好Linux操作系統(tǒng),包括文件系統(tǒng)、網(wǎng)絡(luò)等。
三、安裝步驟
下面以Ubuntu系統(tǒng)為例,介紹如何在Linux上安裝Elasticsearch,請按照以下步驟操作:
1. 更新系統(tǒng)軟件包列表:
sudo apt-get update
2. 安裝Java環(huán)境:
sudo apt-get install openjdk-8-jdk
3. 下載Elasticsearch安裝包:
訪問Elasticsearch官網(wǎng)()下載最新版本的Elasticsearch,選擇適合你的操作系統(tǒng)的安裝包,這里我們選擇tar.gz格式的,下載6.8.2版本的Elasticsearch:
wget https://download.elastic.co/elasticsearch/release/org/elasticsearch/distribution/tar/elasticsearch/6.8.2/elasticsearch-6.8.2-linux-x86_64.tar.gz
4. 解壓安裝包到指定目錄:
sudo tar -xzf elasticsearch-6.8.2-linux-x86_64.tar.gz -C /opt
5. 創(chuàng)建Elasticsearch配置文件目錄:
sudo mkdir -p /etc/elasticsearch
6. 將Elasticsearch配置文件復(fù)制到指定目錄:
sudo cp /opt/elasticsearch-6.8.2-linux-x86_64/config/elasticsearch.yml /etc/elasticsearch/elasticsearch.yml
7. 修改Elasticsearch配置文件:
打開`/etc/elasticsearch/elasticsearch.yml`文件,根據(jù)實際需求修改相關(guān)配置,設(shè)置集群名稱、節(jié)點名稱等,保存并關(guān)閉文件。
8. 創(chuàng)建Elasticsearch數(shù)據(jù)目錄:
sudo mkdir -p /var/lib/elasticsearch
9. 更改數(shù)據(jù)目錄權(quán)限:
sudo chown -R elasticsearch:elasticsearch /var/lib/elasticsearch
10. 啟動Elasticsearch服務(wù):
sudo systemctl start elasticsearch
11. 設(shè)置Elasticsearch開機(jī)自啟:
sudo systemctl enable elasticsearch
Elasticsearch已經(jīng)成功安裝并啟動,你可以通過瀏覽器訪問`http://:9200`,查看Elasticsearch是否正常運行,如果看到類似以下的輸出,說明Elasticsearch已經(jīng)成功安裝并運行:
“`json
{“name”:”kibana”,”cluster_name”:”docker-cluster”,”cluster_uuid”:”QqIYgMmUuXQJhZGdTlDkVQ”,”version”:{“number”:”6.8.2″,”build_hash”:”cccccdddd”,”build_date”:”2022-03-10T12:34:56Z”,”build_snapshot”:”false”,”lucene_version”:”7.14.0″,”minimum_wire_compatibility_version”:”5.6.0″,”minimum_index_compatibility_version”:”5.0.0″},”tagline”:”You Know, for Search”} { “name” : “node-1”, “cluster_name” : “docker-cluster”, “master” : true, “state” : “green”, “uuid” : “rOoKjWtBcN9aAeLJiF9PQg==”, “version” : { “number” : “6.8.2”, “build_hash” = “cccccdddd”, “build_date” = “2022-03-10T12:34:56Z”, “build_snapshot” = “false”, “lucene_version” = “7.14.0”, “minimum_wire_compatibility_version” = “5.6.0”, “minimum_index_compatibility_version” = “5.0.0” }, “tagline” = “You Know, for Search”, … } { “name” : “node-2”, “cluster_name” : “docker-cluster”, “master” : false, “state” : “green”, “uuid” : “rOoKjWtBcN9aAeLJiF9PQg==”, “version” : { “number” : “6.8.2”, “build_hash” = “cccccdddd”, “build_date” = “2022-03-10T12:34:56Z”, “build_snapshot” = “false”, “lucene_version” = “7.14.0”, “minimum_wire_compatibility_version” = “5.6.0”, “minimum_index_compatibility_version” = “5.0.0” }, “tagline” = “You Know, for Search”, … } { “name” : “node-3”, “cluster_name” : “docker-cluster”, “master” : false, “state” : “green”, “uuid” = null, … } { … } { … } { … } { … } { … } {“name”:”kibana”,”cluster_name”:”docker-cluster”,”cluster_uuid”:”QqIYgMmUuXQJhZGdTlDkVQ”,”version”:{“number”:”6.8.2″,”build_hash”:”cccccdddd”,”build_date”:”2022-03-10T12:34:56Z”,”build_snapshot”:”false”,”lucene_version”:”7.14.0″,”minimum_wire_compatibility_version”:”5.6.0″,”minimum_index_compatibility_version”:”5.0.0″},”tagline”:”You Know, for Search”} { … } {“name”:”node-1″,”cluster_name”:”docker-cluster”,”master”:true,”state”:”green”,”uuid”:”rOoKjWtBcN9aAeLJiF9PQg==”,”version”:{“number”:”6.8.2″,”build_hash”:”cccccdddd”,”build_date”:”2022-03-10T12:34:56Z”,”build_snapshot”:”false”,”lucene_version”:”7.14.0″,”minimum_wire_compatibility_version”:”5.6.0″,”minimum_index
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