Legacy Knowledge Base
Published Jun. 30, 2025

Elasticsearch error: This is not an HTTP port

Written By

Gustavo Vasconcelos

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Issue

  • When configuring a remote Elasticsearch server the Search > Connections screen shows the error java.lang.RuntimeException: error while performing request.
  • The logs show the message: Not a valid protocol version: This is not an HTTP port.

 

Environment

  • Any DXP
  • Any Elasticsearch running in Remote mode

 

Resolution

  • Elastic search has two main ports for communication: 9200 and 9300 (by default);
  • This error rises if you configured the transport port (9300) as a request port (9200);
  • Configure the Network Host Addresses parameter with the search server hostname and the correct request port (9200 in most cases), ex: search:9200

 

Additional Information

 

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