Refreshing cluster info failed – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when OpenSearch is unable to update or refresh the cluster information due to network issues, configuration problems, or resource constraints. To resolve this, you can check the network connectivity between the nodes, ensure that the cluster settings are correctly configured, and verify that there are sufficient resources (CPU, memory, disk space) available for the operation. Additionally, checking the OpenSearch logs can provide more detailed information about the cause of the error, which can help in troubleshooting.

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

Log Context

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


        public void onFailure(Exception e) {
            logger.warn(new ParameterizedMessage("refreshing cluster info failed [{}]"; reason); e);

        public void onRejection(Exception e) {
            final boolean shutDown = e instanceof OpenSearchRejectedExecutionException


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