Failed to create a new channel from an accepted socket – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.4-8.9

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Briefly, this error occurs when Elasticsearch is unable to establish a new network connection due to issues like network congestion, insufficient system resources, or incorrect network configuration. To resolve this, you can try increasing the system resources, especially the file descriptors limit. Also, check your network configuration for any inconsistencies or errors. If the issue persists, consider optimizing your Elasticsearch queries to reduce the load on the server.

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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 Elasticsearch concepts: .

Log Context

Log “Failed to create a new channel from an accepted socket.” classname is
We extracted the following from Elasticsearch 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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