从Java应用程序连接到Kerberos安全的HBase集群

<dependencies>
    <!-- HBase客户端依赖 -->
    <dependency>
        <groupId>org.apache.hbase</groupId>
        <artifactId>hbase-client</artifactId>
        <version>2.4.9</version> <!-- 使用适合你的HBase版本的客户端 -->
    </dependency>
    <!-- Kerberos依赖 -->
    <dependency>
        <groupId>org.apache.hadoop</groupId>
        <artifactId>hadoop-auth</artifactId>
        <version>3.3.1</version> <!-- 使用适合你的Hadoop版本的依赖 -->
    </dependency>
</dependencies>

kinit your_username

import org.apache.hadoop.security.UserGroupInformation;

public class KerberosUtil {
    public static void main(String[] args) throws Exception {
        String principal = "your_username@YOUR_REALM";
        String keytabPath = "/path/to/your/keytab";

        UserGroupInformation.setConfiguration(new Configuration());
        UserGroupInformation.loginUserFromKeytab(principal, keytabPath);
    }
}

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;

public class HBaseKerberosExample {
    public static void main(String[] args) throws Exception {
        Configuration conf = HBaseConfiguration.create();
        conf.set("hbase.security.authentication", "kerberos");
        conf.set("hbase.master.kerberos.principal", "hbase/_HOST@YOUR_REALM");
        conf.set("hbase.regionserver.kerberos.principal", "hbase/_HOST@YOUR_REALM");
        conf.set("hadoop.security.authentication", "kerberos");

        // 设置Kerberos票据缓存路径
        System.setProperty("java.security.krb5.conf", "/path/to/krb5.conf");
        System.setProperty("sun.security.krb5.debug", "true"); // 可选，用于调试Kerberos

        Connection connection = ConnectionFactory.createConnection(conf);
        // 使用connection进行HBase操作
        connection.close();
    }
}

import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Admin;
import org.apache.hadoop.hbase.client.ColumnFamilyDescriptor;
import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder;
import org.apache.hadoop.hbase.client.TableDescriptor;
import org.apache.hadoop.hbase.client.TableDescriptorBuilder;

public class HBaseKerberosExample {
    public static void main(String[] args) throws Exception {
        // ... 连接配置代码 ...

        try (Connection connection = ConnectionFactory.createConnection(conf);
             Admin admin = connection.getAdmin()) {

            TableName tableName = TableName.valueOf("your_table_name");
            if (!admin.tableExists(tableName)) {
                ColumnFamilyDescriptor cfDescriptor = ColumnFamilyDescriptorBuilder.of("cf1");
                TableDescriptor tableDescriptor = TableDescriptorBuilder.newBuilder(tableName)
                        .setColumnFamily(cfDescriptor)
                        .build();
                admin.createTable(tableDescriptor);
            }

            // 其他HBase操作
        }
    }
}