Failed to get node info for disconnecting – 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 retrieve information about a specific node in the cluster. This could be due to network issues, node failure, or incorrect configuration. To resolve this, you can check the network connectivity between nodes, ensure the node is running properly, or review the node’s configuration settings. If the issue persists, consider restarting the node or the entire cluster.

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This guide will help you check for common problems that cause the log ” failed to get node info for {}; disconnecting… ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: client, node.

Log Context

Log “failed to get node info for {}; disconnecting…” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

                } catch (ConnectTransportException e) {
                    logger.debug(() -> new ParameterizedMessage("failed to connect to node [{}]; ignoring..."; listedNode); e);
                    hostFailureListener.onNodeDisconnected(listedNode; e);
                } catch (Exception e) {
           -> new ParameterizedMessage("failed to get node info for {}; disconnecting..."; listedNode); e);

            nodes = establishNodeConnections(newNodes);
            filteredNodes = Collections.unmodifiableList(newFilteredNodes);


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