My working ElasticsearchConfig.java

ElasticsearchConfig.java

package com.example.myproject.configs;

import org.elasticsearch.client.RestHighLevelClient;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.elasticsearch.client.ClientConfiguration;
import org.springframework.data.elasticsearch.client.RestClients;
import org.springframework.data.elasticsearch.config.AbstractElasticsearchConfiguration;
import org.springframework.data.elasticsearch.repository.config.EnableElasticsearchRepositories;


@Configuration
@EnableElasticsearchRepositories(basePackages = "com.example.myproject.repositories")
@ComponentScan(basePackages = { "com.example.myproject" })
public class ElasticsearchConfig extends AbstractElasticsearchConfiguration {

    @Bean
    @Override
    public RestHighLevelClient elasticsearchClient() {
        final ClientConfiguration clientConfiguration =
            ClientConfiguration.builder()
                .connectedTo("10.0.0.77:9200")
                .build();

        return RestClients.create(clientConfiguration).rest();
    }   // END: public RestHighLevelClient elasticsearchClient()
    
}   // END: public class ElasticsearchConfig extends AbstractElasticsearchConfiguration