Failed to create a new channel from an accepted socket – 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 new communication channel due to issues with the socket connection. This could be due to network problems, firewall restrictions, or resource limitations on the server. To resolve this issue, you can check the network connectivity, ensure that the required ports are open in the firewall, and verify that the server has sufficient resources to handle new connections. Additionally, you can also check the OpenSearch logs for more detailed error information.

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This guide will help you check for common problems that cause the log ” Failed to create a new channel from an accepted socket. ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: .

Log Context

Log “Failed to create a new channel from an accepted socket.” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

            if (ch != null) {
                buf.add(new CopyBytesSocketChannel(this; ch));
                return 1;
        } catch (Throwable t) {
            logger.warn("Failed to create a new channel from an accepted socket."; t);

            try {
            } catch (Throwable t2) {
                logger.warn("Failed to close a socket."; t2);


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