Error while sending ping response – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-1.3

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Briefly, this error occurs when OpenSearch is unable to send a ping response due to network issues, firewall restrictions, or configuration problems. To resolve this, you can check your network connectivity and ensure that the required ports are open in your firewall. Additionally, verify your OpenSearch configuration settings, particularly those related to network and cluster communication. If the issue persists, consider restarting your OpenSearch nodes or the entire cluster to reset the network connections.

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This guide will help you check for common problems that cause the log ” error while sending ping response ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: ping, response, discovery.

Log Context

Log “error while sending ping response” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

                        try {
                        } catch (IOException inner) {
                            logger.warn("error while sending ping response"; inner);

                    public void clusterStateProcessed(String source; ClusterState oldState; ClusterState newState) {


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