Malformed external ping request no request element from content – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 2.3-2.3

Briefly, this error occurs when Elasticsearch receives an incorrectly formatted external ping request. This could be due to a syntax error in the request or a missing request element. To resolve this issue, you should first verify the syntax of your ping request. Ensure that all necessary elements are included and correctly formatted. If the error persists, check your Elasticsearch version and ensure your request is compatible with it. Lastly, consider checking your network connectivity, as intermittent network issues can sometimes cause this error.

This guide will help you check for common problems that cause the log ” malformed external ping request; no ‘request’ element from {}; content {} ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: discovery, discovery-multicast, ping, Plugin and request.

Log Context

Log “malformed external ping request; no ‘request’ element from {}; content {}” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :


            Map request = (Map) externalPingData.get("request");
            if (request == null) {
                logger.warn("malformed external ping request; no 'request' element from {}; content {}"; remoteAddress; externalPingData);

            final String requestClusterName = request.containsKey("cluster_name") ? request.get("cluster_name").toString() : request.containsKey("clusterName") ? request.get("clusterName").toString() : null;
            if (requestClusterName == null) {


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