1、添加maven依赖
elastic.co
https://artifacts.elastic.co/maven
org.elasticsearch.plugin
x-pack-sql-jdbc
7.6.2
2、使用测试代码连接
public static void main(String[] args) {
try {
Connection connection = DriverManager.getConnection("jdbc:es://http://172.16.62.121:19200");// 将ES-IP换位ES服务器的IP
Statement statement = connection.createStatement();
ResultSet results = statement.executeQuery("select * from vmware_vm_day_perf LIMIT 5");
System.out.println(results);
while (results.next()) {
System.out.println(results.getString("vmName"));
}
} catch (Exception e) {
e.printStackTrace();
}
}
如果未关闭授权验证，需要添加用户名和密码参数
关闭用户名密码验证的方式：
在ES的配置文件在elasticsearch.yml新增中
xpack.security.enabled: false
3、破解x-pack-core
白金版支持JDBC连接，基础版是不支持的，你可以申请一个白金版，也可以像我一样破解x-pack-core
接下来操作是以7.6.2版本为例，其他版本基本一样
x-pack-core.7.6.2.jar位置：$ES_HOME/modules/x-pack-core/x-pack-core.7.6.2.jar
$ES_HOME为Elasticsearch的安装目录
随便找一个目录创建两个java文件 分别是：
LicenseVerifier.java
package org.elasticsearch.license;
/**
* * Responsible for verifying signed licenses
* */
public class LicenseVerifier {
/**
* * verifies the license content with the signature using the packaged
* * public key
* * @param license to verify
* * @return true if valid, false otherwise
* */
public static boolean verifyLicense(final License license, byte[] publicKeyData) {
return true;
}
public static boolean verifyLicense(final License license) {
return true;
}
}
XPackBuild.java
package org.elasticsearch.xpack.core;
import org.elasticsearch.common.SuppressForbidden;
import org.elasticsearch.common.io.PathUtils;
import java.io.IOException;
import java.net.URISyntaxException;
import java.net.URL;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.jar.JarInputStream;
import java.util.jar.Manifest;
public class XPackBuild {
public static final XPackBuild CURRENT;
static {
CURRENT = new XPackBuild("Unknown", "Unknown");
}
/**
* * Returns path to xpack codebase path
* */
@SuppressForbidden(reason = "looks up path of xpack.jar directly")
static Path getElasticsearchCodebase() {
URL url = XPackBuild.class.getProtectionDomain().getCodeSource().getLocation();
try {
return PathUtils.get(url.toURI());
} catch (URISyntaxException bogus) {
throw new RuntimeException(bogus);
}
}
private String shortHash;
private String date;
XPackBuild(String shortHash, String date) {
this.shortHash = shortHash;
this.date = date;
}
public String shortHash() {
return shortHash;
}
public String date() {
return date;
}
}
重新编译
javac -cp "/data/work/elasticsearch-7.6.2_master/lib/elasticsearch-7.6.2.jar:/data/work/elasticsearch-7.6.2_master/lib/lucene-core-8.4.0.jar:/data/work/elasticsearch-7.6.2_master/modules/x-pack-core/x-pack-core-7.6.2.jar" LicenseVerifier.java
javac -cp "/data/work/elasticsearch-7.6.2_master/lib/elasticsearch-7.6.2.jar:/data/work/elasticsearch-7.6.2_master/lib/lucene-core-8.4.0.jar:/data/work/elasticsearch-7.6.2_master/modules/x-pack-core/x-pack-core-7.6.2.jar:/data/work/elasticsearch-7.6.2_master/lib/elasticsearch-core-7.6.2.jar" XPackBuild.java
生成对应的.class文件
-rw-r--r-- 1 root root 410 6月 2 09:42 LicenseVerifier.class
-rw-r--r-- 1 root root 588 6月 2 09:41 LicenseVerifier.java
-rw-r--r-- 1 root root 1464 6月 2 09:42 XPackBuild.class
-rw-r--r-- 1 root root 1232 6月 2 09:41 XPackBuild.java
通过压缩软件将生成的.class文件分别替换到对应的目录下
org\elasticsearch\license\LicenseVerifier.class
org\elasticsearch\xpack\core\XPackBuild.class
然后用新的jar替换$ES_HOME/modules/x-pack-core/x-pack-core.7.6.2.jar
更新许可证
官方申请地址：https://register.elastic.co/marvel_register
邮箱和国家要正确填写，其他随便
根据你邮件收到的地址下载，下载后更名为license.json
将 "type":"basic" 替换为 "type":"platinum" # 基础班变更为白金版
将 "expiry_date_in_millis":的时间戳修改，具体想修改多长时间随意，但是一定要时间戳。
上传license文件
curl -H "Content-Type: application/json" -XPUT 'http://ES-IP:9200/_xpack/license?acknowledge=true' -d @license.json
重启Elasticsearch服务
上传后查看证书时间http://ES-IP:9200/_license