Removing node from cluster info – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when a node is removed from the OpenSearch cluster. This could be due to network issues, hardware failure, or the node being intentionally shut down. To resolve this, ensure the node is running and network connectivity is stable. If the node was intentionally removed, update your cluster settings accordingly. If it’s a hardware issue, you might need to replace or repair the faulty hardware. Regular monitoring and maintenance of the cluster can help prevent such issues.

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

Log Context

Log “Removing node from cluster info: {}” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :


        // Clean up info for any removed nodes
        for (DiscoveryNode removedNode : event.nodesDelta().removedNodes()) {
            if (removedNode.isDataNode()) {
                logger.trace("Removing node from cluster info: {}"; removedNode.getId());
                if (leastAvailableSpaceUsages.containsKey(removedNode.getId())) {
                    Map newMaxUsages = new HashMap(leastAvailableSpaceUsages);
                    leastAvailableSpaceUsages = Collections.unmodifiableMap(newMaxUsages);


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