Elasticsearch.Net.ElasticsearchClientException:

No nodes were attempted

No nodes were attempted, this can happen when a node predicate does not match any nodes

at Elasticsearch.Net.RequestPipeline.ThrowNoNodesAttempted(RequestData requestData, List`1 seenExceptions)

Elasticsearch.Net.Transport1.FinalizeResponse[TResponse](RequestData requestData, IRequestPipeline pipeline, List1 seenExceptions, TResponse response)

9200改成9300