以前倒是没太注意，可能 版本问题吧，springboot2.1.17 redis &es springdata冲突，导致es 启动不了 actory method 'elasticsearchClient' threw exception; availableProcessors is already set to [4], rejecting [4

加入以下配置 其实 就是 在redis 之前加载

@Configuration
@Import(ElasticsearchAutoConfiguration.class)
@AutoConfigureBefore(RedisAutoConfiguration.class)
public class ElasticsearchConfig {

    @PostConstruct
    void init() {
        System.setProperty("es.set.netty.runtime.available.processors", "false");
    }

    @Bean(name = "elasticsearchTemplate")
    public ElasticsearchTemplate elasticsearchTemplate(Client client,
                                                       ElasticsearchConverter converter) {
        try {
            return new ElasticsearchTemplate(client, converter);
        }
        catch (Exception ex) {
            throw new IllegalStateException(ex);
        }
    }

    @Bean
    public ElasticsearchConverter elasticsearchConverter(
            SimpleElasticsearchMappingContext mappingContext) {
        return new MappingElasticsearchConverter(mappingContext);
    }

    @Bean
    public SimpleElasticsearchMappingContext mappingContext() {
        return new SimpleElasticsearchMappingContext();
    }

}

参考链接
https://blog.csdn.net/luluyo/article/details/92799193
https://www.jianshu.com/p/7a9dd59b6e59

快速入门
https://cloud.tencent.com/developer/article/1581105