從2011年開始使用coreseek(基于sphinx)作為全文檢索的解決方案,對(duì)于中小型應(yīng)用使用還不錯(cuò)鳖眼,但coreseek的新版一直跳票黑毅,而且在實(shí)際生產(chǎn)環(huán)境的表現(xiàn)不太穩(wěn)定(單索引文件超過1G),缺少相應(yīng)的運(yùn)維監(jiān)控工具钦讳,考慮替換其他的檢索引擎矿瘦。
在Yii 2.x 官方擴(kuò)展中集成了Elasticsearch,于是開始學(xué)習(xí)關(guān)于Elasticsearch的資料愿卒,但由于版本更新太快缚去,大部分資料都已經(jīng)過時(shí),所以用本文稍作記錄琼开,當(dāng)然與sphinx 對(duì)比易结,Elasticsearch并不是完全對(duì)等的替代。
簡(jiǎn)介
概括來說是支持中文分詞(重要)柜候、多種數(shù)據(jù)源的分布式全文檢索引擎搞动,更多詳細(xì) 看官網(wǎng):https://www.elastic.co/products/elasticsearch/
版本說明
- 服務(wù)器:Linux(centos 6.x)
- java環(huán)境:JDK 1.8.0
- elasticsearch:2.3.1
- elasticsearch-jdbc(數(shù)據(jù)源插件):2.3.1
- IK Analysis(中文分詞插件):1.9.1
安裝
JDK 環(huán)境
- 檢查java版本
<code>java -version</code> - 安裝1.8+JDK
<code>yum install java-1.8.0</code> - 查詢舊版 JDK
<code>rpm -qa | grep java</code> - 移除舊版JDK,根據(jù)查詢的舊版本包名
<code>yum remove java-1.6.0</code>
Elasticsearch
1.添加yum源
創(chuàng)建.repo文件(elasticsearch.repo):
<code>
[elasticsearch-2.x]
name=Elasticsearch repository for 2.x packages
baseurl=https://packages.elastic.co/elasticsearch/2.x/centos
gpgcheck=1
gpgkey=https://packages.elastic.co/GPG-KEY-elasticsearch
enabled=1
</code>
導(dǎo)入key:
<code>
rpm --import https://packages.elastic.co/GPG-KEY-elasticsearch
</code>
2.安裝
<code>
yum install elasticsearch
</code>
基本配置
創(chuàng)建相應(yīng)服務(wù)目錄&目錄權(quán)限
<pre>
mkdir -p /data/elasticsearch/data
mkdir -p /data/elasticsearch/logs
chown -R elasticsearch /data/elasticsearch/data
chown -R elasticsearch /data/elasticsearch/logs
</pre>
Elasticsearch 配置
默認(rèn)路徑:/etc/elasticsearch/elasticsearch.yml
<pre>
集群名(同一個(gè)集群渣刷,名稱必須相同)
cluster.name: my-application
服務(wù)節(jié)點(diǎn)名(每個(gè)服務(wù)節(jié)點(diǎn)不一樣)
node.name: node-1
數(shù)據(jù)存儲(chǔ)路徑
path.data: /data/elasticsearch/data
服務(wù)日志路徑
path.logs: /data/elasticsearch/logs
服務(wù)ip地址
network.host: 0.0.0.0
服務(wù)端口
http.port: 9200
</pre>
Elasticsearch 環(huán)境變量配置
默認(rèn)路徑:/etc/sysconfig/elasticsearch
<pre>
設(shè)置為可用內(nèi)存的50%
ES_HEAP_SIZE = 1g
其余參數(shù)參考說明進(jìn)行調(diào)優(yōu)(JVM)
</pre>
中文分詞
采用 ik 分詞插件進(jìn)行中文分詞鹦肿,支持web熱更新詞庫,項(xiàng)目github地址:https://github.com/medcl/elasticsearch-analysis-ik
安裝
elasticsearch plugin安裝方式失敗辅柴,采用手動(dòng)安裝
1.安裝maven工具
<code>wget http://repos.fedorapeople.org/repos/dchen/apache-maven/epel-apache-maven.repo -O /etc/yum.repos.d/epel-apache-maven.repo</code>
<code>yum install apache-maven</code>
2.下載ik源碼包
<code>git clone https://github.com/medcl/elasticsearch-analysis-ik</code>
<code>cd elasticsearch-analysis-ik</code>
3.生成jar插件包
<code>
mvn clean
mvn compile
mvn package
</code>
4.copy到plugins 目錄(/usr/share/elasticsearch/plugins)
<code>unzip target/releases/elasticsearch-analysis-ik-*.zip</code>
<code>cp -r target/releases/ /usr/share/elasticsearch/plugins/ik</code>
5.配置詞庫(ik自帶搜狗詞庫)
配置:/usr/share/elasticsearch/plugins/ik/config/ik/IKAnalyzer.cfg.xml
<pre>
<code>
<entry key="ext_dict">custom/mydict.dic;custom/single_word_low_freq.dic;custom/sougou.dic</entry>
</code>
</pre>
6.重啟elasticsearch
<code>service elasticsearch restart</code>
數(shù)據(jù)源(JDBC importer for Elasticsearch)
1. 安裝:(一般 解壓即可使用)
強(qiáng)烈建議下載與Elasticsearch 版本對(duì)應(yīng)的源碼包:https://github.com/jprante/elasticsearch-jdbc/tree/2.3.1.0
2. mysql數(shù)據(jù)源配置(默認(rèn)腳本目錄/path/bin/)
全量索引:mysql-es-all.sh
<pre>
!/bin/sh
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
bin=${DIR}/../bin
lib=${DIR}/../lib
curl -XDELETE '192.168.115.115:9200/myindex'
echo '
{
"type" : "jdbc",
"jdbc" : {
"locale" : "zh_CN",
"statefile" : "statefile.json",
"timezone" : "GMT+8",
"autocommit" : true,
"elasticsearch" : {
"cluster" : "my-application",
"host" : "192.168.115.115",
"port" : "9300"
},
"index" : "myindex",
"type" : "mytype",
"url" : "jdbc:mysql://192.168.115.112:3306/search_content",
"user" : "root",
"password" : "",
"sql" : "select cid as _id,title,content from news",
"schedule": "0 0/15 0-23 ? * *",
"metrics" : {
"enabled" : true,
"interval" : "5m"
},
"index_settings" : {
"index" : {
"number_of_shards" : 2,
"number_of_replicas" : 2
}
},
"type_mapping": {
"mytype" : {
"properties" : {
"title" : {
"type" : "string",
"store": "no",
"term_vector": "with_positions_offsets",
"analyzer": "ik_max_word",
"search_analyzer": "ik_max_word",
"include_in_all": "true"
},
"content" : {
"type" : "string",
"store": "no",
"term_vector": "with_positions_offsets",
"analyzer": "ik_max_word",
"search_analyzer": "ik_max_word",
"include_in_all": "true"
}
}
}
}
}
}
' | java
-cp "${lib}/*"
-Dlog4j.configurationFile=${bin}/log4j2.xml
org.xbib.tools.Runner
org.xbib.tools.JDBCImporter
</pre>
增量索引:mysql-es-update.sh
通過statefile.json 里面的時(shí)間進(jìn)行查詢箩溃,需相應(yīng)的數(shù)據(jù)表有相應(yīng)的字段
<pre>
...
"sql" : [
{
"statement" : "select cid as _id,title,content,from news where utime > unix_timestamp(?)",
"parameter" : [ "$metrics.lastexecutionstart" ]
}
],
...
</pre>
3. shell 運(yùn)行相應(yīng)的腳本
如果出現(xiàn)運(yùn)行問題瞭吃,通過查看/path/bin/logs/jdbc.log 排查
常用組件
head
安裝命令:
<code>
/usr/share/elasticsearch/bin/plugin install mobz/elasticsearch-head
</code>
使用:
http://localhost:9200/_plugin/head/
license
安裝命令:
<code>
/usr/share/elasticsearch/bin/plugin install license
</code>
kibana+marvel 監(jiān)控臺(tái)
elasticsearch集群監(jiān)控平臺(tái)
1. 安裝kibana
1).添加yum源
創(chuàng)建.repo文件(kibana.repo):
<code>
[kibana]
name=Kibana
baseurl=http://packages.elastic.co/kibana/4.5/centos
gpgcheck=1
gpgkey=http://packages.elastic.co/GPG-KEY-elasticsearch
enabled=1
</code>
導(dǎo)入key:
<code>
rpm --import https://packages.elastic.co/GPG-KEY-elasticsearch
</code>
2).安裝
<code>
yum install kibana
</code>
2. 安裝Marvel
在elasticsearch 安裝 Marvel 插件
<code>
/usr/share/elasticsearch/bin/plugin install marvel-agent
</code>
在kibana 安裝 Marvel 插件
<code>
/opt/kibana/bin/kibana plugin --install elasticsearch/marvel/latest
</code>
3. 啟動(dòng)kibana
<code>
service elasticseach restart
service kibana restart
</code>
4. 使用
http://localhost:5601/app/marvel
集群配置
服務(wù)節(jié)點(diǎn)的基本參數(shù),參考 Elasticsearch 配置 進(jìn)行設(shè)置涣旨,為了方便歪架,集群機(jī)器放在同一網(wǎng)段下(非強(qiáng)制)
默認(rèn)路徑:/etc/elasticsearch/elasticsearch.yml
<pre>
允許多播節(jié)點(diǎn)自動(dòng)發(fā)現(xiàn)
discovery.zen.ping.multicast.enabled: true
單播節(jié)點(diǎn)ip配置,用于集群組件(可不設(shè))
discovery.zen.ping.unicast.hosts: ["192.168.115.115","192.168.115.116"]
</pre>
注意集群所有服務(wù)節(jié)點(diǎn)的插件开泽,最好保持一致