ES集群并配置IK分词器

一、ES集群搭建，建议在单机部署时安装完IK分词器再copy到其他机器进行集群部署，省去安装IK分词器的时间

1.单机部署，参照https://blog.csdn.net/ab7253957/article/details/85334259中搭建es的步骤，先搭建单机es再进行下面的步骤

2.修改配置文件config/elasticsearch.yml，标红属性是需要修改或增加的属性，如果是在同一台机器部署需要修改端口号

cluster.name: elk
#节点名称
node.name: node-192.168.214.128
node.master: true
node.data: true
#http访问端口
http.port: 9200
#节点通信端口
transport.tcp.port: 9300
#外网访问地址
network.host: 0.0.0.0
discovery.zen.ping.unicast.hosts: ["192.168.214.128:9300", "192.168.214.129:9300"]
#discovery.zen.ping_timeout: 30s #设置超时时间，一般来说网络不是很稳定的话设置长一点
#discovery.zen.minimum_master_nodes: 2 #至少要发现集群中能做master的节点数，配置n（es节点的个数）/2防止脑裂，选举在机器大于3的时候。

3. ./bin/elasticsearch -d  后台启动

二、安装IK分词器

1.IK分词器github地址，https://github.com/medcl/elasticsearch-analysis-ik，里面有安装IK分词器的命令，注意修改版本号，我们使用的es是2.4.6版本，对应ik版本为1.10.6，所以修改命令如下

./bin/plugin install https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v1.10.6/elasticsearch-analysis-ik-1.10.6.zip

安装成功后在config目录下会有analysis-ik文件夹，里面是对IK分词器的配置

2.安装过程中遇到如下错误

ERROR: Error copying config directory [/elasticsearch-2.4.6/plugins/analysis-ik/config] to [/elasticsearch-2.4.6/config/analysis-ik], cleaning up, reason: FileSystemException[elasticsearch-2.4.6/config/analysis-ik: 不允许的操作]

用户权限不足，切换到root安装 sudu root

3.测试IK分词器

(1)创建mapping

test-es/estype/_mapping

{
  "properties": {
    "praise_rate": {
      "type": "double"
    },
    "discription": {
      #细粒度分词
      "analyzer": "ik_max_word",
      "type": "string"
    },
    "create_time": {
      "format": "strict_date_optional_time||epoch_millis",
      "type": "date"
    },
    "level": {
      "type": "long"
    },
    "author": {
      #粗粒度分词
      "analyzer": "ik_smart",
      "type": "string"
    },
    "isbn": {
      "type": "string"
    },
    "language": {
      "type": "long"
    },
    "type": {
      "type": "long"
    },
    "is_delete": {
      "type": "long"
    },
    "reader_number": {
      "type": "long"
    },
    "imgurl": {
      "type": "string"
    },
    "recommend_number": {
      "type": "long"
    },
    "score": {
      "type": "long"
    },
    "update_time": {
      "format": "strict_date_optional_time||epoch_millis",
      "type": "date"
    },
    "word_count": {
      "type": "long"
    },
    "price": {
      "type": "double"
    },
    "name": {
      "analyzer": "ik_max_word",
      "type": "string"
    },
    "publishdate": {
      "format": "strict_date_optional_time||epoch_millis",
      "type": "date"
    },
    "publisher": {
      "type": "string"
    },
    "id": {
      "type": "long"
    },
    "state": {
      "type": "long"
    },
    "page_count": {
      "type": "long"
    }
  }
}

（2）使用索引

索引名/_analyze
test-es/_analyze
{"field":"discription","text":"我是中国人"}

如图表示成功