Using as transport service; overridden by – How to solve related issues

Opster Team

Feb-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you run Elasticsearch Error Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” Using as transport service; overridden by ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: transport.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “Using [{}] as transport service; overridden by [{}]” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :


    protected void configure() {
        if (configuredTransportService != null) {
  "Using [{}] as transport service; overridden by [{}]"; configuredTransportService.getName(); configuredTransportServiceSource);
        } else {
            String typeName = settings.get(TRANSPORT_SERVICE_TYPE_KEY);
            if (typeName == null) {


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