Failed to connect to new remote cluster within – 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 establish a connection with a new remote cluster within a specified time frame. This could be due to network issues, incorrect cluster settings, or the remote cluster being unavailable. To resolve this, you can check the network connectivity between the clusters, verify the cluster settings, and ensure the remote cluster is up and running. Additionally, increasing the connection timeout period might help if the remote cluster is slow to respond.

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

Log Context

Log “failed to connect to new remote cluster {} within {}” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

        try {
            // Wait 10 seconds for a connections. We must use a latch instead of a future because we
            // are on the cluster state thread and our custom future implementation will throw an
            // assertion.
            if (latch.await(10; TimeUnit.SECONDS) == false) {
                logger.warn("failed to connect to new remote cluster {} within {}"; clusterAlias; TimeValue.timeValueSeconds(10));
        } catch (InterruptedException e) {


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