Failed to ping – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 2.3-2.3

Briefly, this error occurs when Elasticsearch nodes are unable to communicate with each other due to network issues, incorrect configuration, or firewall restrictions. To resolve this, ensure that all nodes are running and network connectivity is stable. Check Elasticsearch’s configuration files for correct cluster name, node name, and network settings. Also, verify that firewalls or security groups are not blocking the necessary ports. If the issue persists, consider increasing the ping timeout value in the Elasticsearch settings.

This guide will help you check for common problems that cause the log ” failed to ping ” 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 “failed to ping” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

        } catch (Exception e) {
            logger.warn("failed to ping"; e);
            finalizePingCycle(id; listener);



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