Malformed external ping request missing cluster name element within request from content – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 2.3-2.3

Briefly, this error occurs when an external ping request to Elasticsearch is malformed, specifically missing the cluster name element. This could be due to incorrect configuration or a bug in the software. To resolve this issue, you can check the configuration of your Elasticsearch cluster and ensure the cluster name is correctly specified. If the problem persists, consider updating your Elasticsearch version as it might be a bug that has been fixed in a newer version. Also, ensure that the client making the request is properly formatted and includes all necessary elements.

This guide will help you check for common problems that cause the log ” malformed external ping request; missing ‘cluster_name’ element within request; 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 and Plugin.

Log Context

Log “malformed external ping request; missing ‘cluster_name’ element within request; from {}; content {}” classname is MulticastZenPing.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                 return;
            }

            final String requestClusterName = request.containsKey("cluster_name") ? request.get("cluster_name").toString() : request.containsKey("clusterName") ? request.get("clusterName").toString() : null;
            if (requestClusterName == null) {
                logger.warn("malformed external ping request; missing 'cluster_name' element within request; from {}; content {}"; remoteAddress; externalPingData);
                return;
            }

            if (!requestClusterName.equals(clusterName.value())) {
                logger.trace("got request for cluster_name {}; but our cluster_name is {}; from {}; content {}";




 

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