Elasticsearch-ik分析器

CLI 安装步骤
1、停止 Elasticsearch（如果正在运行）： 在安装插件之前，确保 Elasticsearch 没有在运行。
命令：
systemctl stop elasticsearch

2、安装插件： 使用 elasticsearch-plugin 命令安装 IK 插件。

进入到你的es的安装目录：如/usr/local/software/elasticsearch
[root@localhost elasticsearch]# bin/elasticsearch-plugin install https://get.infini.cloud/elasticsearch/analysis-ik/8.17.0

其中analysis-ik/8.17.0对应你自己安装es的版本

warning: ignoring JAVA_HOME=/usr/local/software/jdk-21.0.5; using bundled JDK
-> Installing https://get.infini.cloud/elasticsearch/analysis-ik/8.17.0
-> Downloading https://get.infini.cloud/elasticsearch/analysis-ik/8.17.0
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@     WARNING: plugin requires additional permissions     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
* java.net.SocketPermission * connect,resolve
See https://docs.oracle.com/javase/8/docs/technotes/guides/security/permissions.html
for descriptions of what these permissions allow and the associated risks.

Continue with installation? [y/N]y  （此处选择y）
-> Installed analysis-ik
-> Please restart Elasticsearch to activate any plugins installed

3、查看ik分词器是否安装成功
[root@localhost elasticsearch]# curl -X GET "localhost:9200/_cat/plugins?v"
name                  component   version
localhost.localdomain analysis-ik 8.17.0

4、重启 Elasticsearch：

安装完成后，重启 Elasticsearch 使插件生效。

systemctl stop elasticsearch
systemctl start elasticsearch

查看状态
systemctl status elasticsearch

查看日志
journalctl -u elasticsearch -f

5、查看日志载入插件里有个名为：loaded plugin [analysis-ik]

cat /usr/local/software/elasticsearch/logs/elasticsearch.log

[2025-07-25T13:28:57,460][INFO ][o.e.p.PluginsService     ] [localhost.localdomain] loaded plugin [analysis-ik]

我是中国人，的ik分词情况

{
    "tokens": [
        {
            "token": "我",
            "start_offset": 0,
            "end_offset": 1,
            "type": "CN_CHAR",
            "position": 0
        },
        {
            "token": "是",
            "start_offset": 1,
            "end_offset": 2,
            "type": "CN_CHAR",
            "position": 1
        },
        {
            "token": "中国人",
            "start_offset": 2,
            "end_offset": 5,
            "type": "CN_WORD",
            "position": 2
        },
        {
            "token": "中国",
            "start_offset": 2,
            "end_offset": 4,
            "type": "CN_WORD",
            "position": 3
        },
        {
            "token": "国人",
            "start_offset": 3,
            "end_offset": 5,
            "type": "CN_WORD",
            "position": 4
        }
    ]
}