elasticsearch: 插件安装与删除

一，安装插件

1,查看已安装的插件:

[lhdop@blog ~]$ curl -X GET "localhost:9200/_cat/plugins?v&s=component"
name component version

2,从命令行安装smartcn分词插件:

[lhdop@blog bin]$ ./elasticsearch-plugin install analysis-smartcn
warning: ignoring JAVA_HOME=/usr/local/soft/jdk-17.0.11; using ES_JAVA_HOME
-> Installing analysis-smartcn
-> Downloading analysis-smartcn from elastic
[=================================================] 100%  
-> Installed analysis-smartcn
-> Please restart Elasticsearch to activate any plugins installed

3,smartcn安装到了plugins目录下，查看文件:

[lhdop@blog elasticsearch-8.14.2]$ ls plugins/analysis-smartcn/
analysis-smartcn-8.14.2.jar  lucene-analysis-smartcn-9.10.0.jar  plugin-descriptor.properties

安装完后，如果想让插件生效，需要重启elasticsearch服务

关闭

[root@blog ~]# kill 260903

启动:

[root@blog ~]# /usr/local/soft/elasticsearch-8.14.2/bin/elasticsearch -d 

4,试用smartcn分词，效果不怎么理想，把'海鲜味'给分成了'海'和'鲜味'两个词

[lhdop@blog elasticsearch-8.14.2]$ curl -X GET "localhost:9200/_analyze?pretty" -H 'Content-Type: application/json' -d'
{
  "analyzer": "smartcn",
  "text": "这是一碗海鲜味方便面"
}
'
{
  "tokens" : [
    {
      "token" : "这",
      "start_offset" : 0,
      "end_offset" : 1,
      "type" : "word",
      "position" : 0
    },
    {
      "token" : "是",
      "start_offset" : 1,
      "end_offset" : 2,
      "type" : "word",
      "position" : 1
    },
    {
      "token" : "一",
      "start_offset" : 2,
      "end_offset" : 3,
      "type" : "word",
      "position" : 2
    },
    {
      "token" : "碗",
      "start_offset" : 3,
      "end_offset" : 4,
      "type" : "word",
      "position" : 3
    },
    {
      "token" : "海",
      "start_offset" : 4,
      "end_offset" : 5,
      "type" : "word",
      "position" : 4
    },
    {
      "token" : "鲜味",
      "start_offset" : 5,
      "end_offset" : 7,
      "type" : "word",
      "position" : 5
    },
    {
      "token" : "方便面",
      "start_offset" : 7,
      "end_offset" : 10,
      "type" : "word",
      "position" : 6
    }
  ]
}

5,查看已安装的插件,已经可以看到安装后的smartcn插件了:

[lhdop@blog elasticsearch-8.14.2]$ curl -X GET "localhost:9200/_cat/plugins?v&s=component"
name                    component        version
iZ2zejc9t0hf6pnw6sewrxZ analysis-smartcn 8.14.2

二，删除插件

1，删除前查看插件列表:

[lhdop@blog elasticsearch-8.14.2]$ ./bin/elasticsearch-plugin list
warning: ignoring JAVA_HOME=/usr/local/soft/jdk-17.0.11; using ES_JAVA_HOME
analysis-ik
analysis-smartcn

   查看插件目录:

[lhdop@blog elasticsearch-8.14.2]$ ls plugins/
analysis-ik  analysis-smartcn

2，删除:

[lhdop@blog elasticsearch-8.14.2]$ ./bin/elasticsearch-plugin remove analysis-smartcn --purge
warning: ignoring JAVA_HOME=/usr/local/soft/jdk-17.0.11; using ES_JAVA_HOME
-> removing [analysis-smartcn]...

3, 删除后查看插件列表:

[lhdop@blog elasticsearch-8.14.2]$ ./bin/elasticsearch-plugin list
warning: ignoring JAVA_HOME=/usr/local/soft/jdk-17.0.11; using ES_JAVA_HOME
analysis-ik

  查看插件目录:

[lhdop@blog elasticsearch-8.14.2]$ ls plugins/
analysis-ik

三，查看es版本:

[lhdop@blog ~]$ /usr/local/soft/elasticsearch-8.14.2/bin/elasticsearch --version
warning: ignoring JAVA_HOME=/usr/local/soft/jdk-17.0.11; using ES_JAVA_HOME
Version: 8.14.2, Build: tar/2afe7caceec8a26ff53817e5ed88235e90592a1b/2024-07-01T22:06:58.515911606Z, JVM: 17.0.11