Faulty node – How to solve this OpenSearch exception

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when a node in the OpenSearch cluster is not functioning correctly. This could be due to hardware failure, network issues, or software bugs. To resolve this issue, you can try restarting the faulty node. If the problem persists, check the node’s logs for any specific errors. If it’s a hardware issue, you might need to replace or repair the hardware. If it’s a network issue, check your network connections and settings. If it’s a software issue, you might need to update or patch your OpenSearch software.

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This guide will help you check for common problems that cause the log ” faulty node ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: node, cluster.

Log Context

Log “faulty node” class name is Publication.java. We extracted the following from OpenSearch source code for those seeking an in-depth context :

 }  void onFaultyNode(DiscoveryNode faultyNode) {
 if (isActive() && discoveryNode.equals(faultyNode)) {
 logger.debug("onFaultyNode: [{}] is faulty; failing target in publication {}"; faultyNode; Publication.this);
 setFailed(new OpenSearchException("faulty node"));
 }  DiscoveryNode getDiscoveryNode() {


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