我使用OpenSearch docker镜像在本地服务器上设置了一个ElasticSearch示例。

$ docker run -p 9200:9200 -p 9600:9600 -e "discovery.type=single-node" opensearchproject/opensearch:1.3.1

我可以看到示例已启动并正在运行https：//localhost：9200/
当尝试执行一个简单的搜索时，我得到以下错误。

ProductNotSupportedError: The client noticed that the server is not Elasticsearch and we do not support this unknown product.

我还尝试了最新的ElasticSearch客户端，但它给了我一个连接错误。

error ConnectionError: unable to verify the first certificate

代码示例：

//const { Client } = require('@elastic/elasticsearch') // Got connection error when using latest version 
const {Client: Client} = require('es7')
var connectionString = 'https://admin:admin@localhost:9200'
const client = new Client({
    node: connectionString,
    ssl: {
        rejectUnauthorized: false
    }
})
client.info()
    .then(async response => {
        console.log('success', response.statusCode);
        const result = await client.search({
            index: 'r7',
            query: {
                match: {
                    subtype: 'a'
                }
            }
        })
        console.log('result', result)
        console.log('count', result.hits.hits)
    })
    .catch(error => {
        console.error('error', error)
    })

非常感谢你的帮助。
谢谢