第一步 安装elasticsearch
1安装elasticsearch
2、新建目录/root/elasticsearch/config，/root/elasticsearch/data和/root/elasticsearch/plugins
在/root/elasticsearch/config目录下新建文件elasticsearch.yml，文件内容如下：
http.host: 0.0.0.0 cluster.name: "dokcer-cluster" network.host: 0.0.0.0
3、运行 chmod -R 777 /root/elasticsearch/ 给目录授权
4、运行如下命令启动elasticsearch容器
docker run --name elasticsearch -p 9200:9200 \ -p 9300:9300 \ -e "discovery.type=single-node" \ -e ES_JAVA_OPTS="-Xms64m -Xmx128m" \ -v /root/elasticsearch/config/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml \ -v /root/elasticsearch/data:/usr/share/elasticsearch/data \ -v /root/elasticsearch/plugins:/usr/share/elasticsearch/plugins \ -d elasticsearch:7.10.1
5、运行docker ps查看是否启动成功
第二步 给elasticsearch设置账号密码
在Elasticsearch7.10.1，x-pack已经作为默认的插件集成在Elasticsearch里面了，所以无需在bin/elasticsearch-plugin install x-pack了，直接在配置文件中启用就可以了。
1 修改elasticsearch的配置文件为如下内容： 如果是允许postman测试时在header里面传递用户名和密码则需要添加如下信息：
http.cors.enabled: true
http.cors.allow-origin: "*"
http.cors.allow-headers: Authorization
# 停止xpack功能,暂停密码验证功能 # xpack.security.enabled: true # xpack.security.transport.ssl.enabled: true
http.host: 0.0.0.0 cluster.name: "dokcer-cluster" network.host: 0.0.0.0 http.cors.enabled: true http.cors.allow-origin: "*" http.cors.allow-headers: Authorization,X-Requested-With,Content-Length,Content-Type xpack.security.enabled: true xpack.security.audit.enabled: true #如果是basic类型，则需要添加下面这一句 xpack.license.self_generated.type: basic xpack.security.transport.ssl.enabled: true
查看elasticsearch的类型
http://ip:9200/_xpack/license
2 进入elasticsearch的容器里面，进入到bin目录（/usr/share/elasticsearch/bin/），并执行命令 ./elasticsearch-setup-passwords interactive，然后设置账号的密码
3 然后在浏览器里面输入 http://ip:9200 会提示输入用户名和密码。这样表示配置成功了
在elasticsearch里面添加中文分词
6、为elasticsearch安装中文分词
将elasticsearch-analysis-ik-7.10.1.zip上传到/root目录，然后运行如下命令将文件上传到elasticsearch容器的目录里面
docker cp /root/elasticsearch-analysis-ik-7.10.1.zip elasticsearch:/usr/share/elasticsearch/plugins
进入容器：
docker exec -it elasticsearch /bin/bash
创建目录：mkdir /usr/share/elasticsearch/plugins/ik
将文件压缩包移动到ik中：
mv /usr/share/elasticsearch/plugins/elasticsearch-analysis-ik-7.10.1.zip /usr/share/elasticsearch/plugins/ik
进入目录：cd /usr/share/elasticsearch/plugins/ik
解压：unzip elasticsearch-analysis-ik-7.10.1.zip
删除压缩包：rm -rf elasticsearch-analysis-ik-7.10.1.zip
退出并重启镜像：exit
重启镜像：docker restart elasticsearch
验证分词是否安装成功：
Postman
Post http://ip:9200/_analyze?pretty
{
"analyzer": "ik_smart",
"text":"中华人民共和国国歌"
}
当配置了密码后，springboot 配置elasticsearch
elasticsearch: host: 162.14.68.242:9200 schema: http username: elastic password: esri1234 maxConnectNum: 100 maxConnectPerRoute: 100
ElasticsearchConfig文件
package cn.com.es.config;
import org.apache.http.HttpHost;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestClientBuilder;
import org.elasticsearch.client.RestHighLevelClient;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import java.util.ArrayList;
import java.util.List;
/**
* @Author: luojie
* @Date: 2021/3/2 15:55
*/
@Configuration
public class ElasticsearchConfig {
@Value("${elasticsearch.host}")
private String host;
@Value("${elasticsearch.username}")
private String username;
@Value("${elasticsearch.password}")
private String password;
/**
* 最大连接数
*/
@Value("${elasticsearch.maxConnectNum}")
private int maxConnectNum;
/**
* 最大路由连接数
*/
@Value("${elasticsearch.maxConnectPerRoute}")
private int maxConnectPerRoute;
//通用设置项
public static final RequestOptions COMMON_OPTIONS;
static {
RequestOptions.Builder builder = RequestOptions.DEFAULT.toBuilder();
// builder.addHeader("Authorization", "Bearer " + TOKEN);
// builder.setHttpAsyncResponseConsumerFactory(
// new HttpAsyncResponseConsumerFactory
// .HeapBufferedResponseConsumerFactory(30 * 1024 * 1024 * 1024));
COMMON_OPTIONS = builder.build();
}
// @Bean(name = "restHighLevelClient")
@Bean
public RestHighLevelClient restHighLevelClient() {
// 拆分地址
List<HttpHost> hostLists = new ArrayList<>();
String[] hostList = host.split(",");
for (String addr : hostList) {
String host = addr.split(":")[0];
String port = addr.split(":")[1];
hostLists.add(new HttpHost(host, Integer.parseInt(port), "http"));
}
final CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
credentialsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(username, password));
// 转换成 HttpHost 数组
HttpHost[] httpHost = hostLists.toArray(new HttpHost[]{});
// 构建连接对象
RestClientBuilder builder = RestClient.builder(httpHost);
// // 异步连接延时配置
// builder.setRequestConfigCallback(requestConfigBuilder -> {
// requestConfigBuilder.setConnectTimeout(connectTimeout);
// requestConfigBuilder.setSocketTimeout(socketTimeout);
// requestConfigBuilder.setConnectionRequestTimeout(connectionRequestTimeout);
// return requestConfigBuilder;
// });
// 异步连接数配置
builder.setHttpClientConfigCallback(httpClientBuilder -> {
httpClientBuilder.setMaxConnTotal(maxConnectNum);
httpClientBuilder.setMaxConnPerRoute(maxConnectPerRoute);
return httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider);
});
return new RestHighLevelClient(builder);
}
//项目主要使用RestHighLevelClient，对于低级的客户端暂时不用
// @Bean
// public RestClient restClient(){
//
// HttpHost httpHostArray = new HttpHost(host.split(":")[0], Integer.parseInt(host.split(":")[1]), "http");
// return RestClient.builder(httpHostArray).build();
// }
}
想通过java的httpClient调用elasticsearch的接口
http://user:password@192.168.1.2:9200/my_index
比如查询所有索引的接口 http://127.0.0.1:9200/_cat/indices?v 可以是 http://elastic:test1234@127.0.0.1:9200/_cat/indices?v
如果密码里面有特殊字符 则需要将特殊字符转义
参考 https://blog.csdn.net/p312011150/article/details/78928003
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