Log Connection closed during ssl handshake – How To Solve Related Issues


Log Connection closed during ssl handshake – How To Solve Related Issues

Opster Team

Jan-20, Version: 1.7-8.0

 

Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” Connection closed during ssl handshake ” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: plugin.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to pinpoint the cause of many errors and provides suitable actionable recommendations how to resolve them (free tool that requires no installation).

Log context

Log “Connection {} closed during ssl handshake” classname is SecurityNetty4HttpServerTransport.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

             ctx.channel().close();
        } else if (isCloseDuringHandshakeException(cause)) {
            if (logger.isTraceEnabled()) {
                logger.trace(new ParameterizedMessage("connection {} closed during ssl handshake"; ctx.channel()); cause);
            } else {
                logger.warn("connection {} closed during ssl handshake"; ctx.channel());
            }
            ctx.channel().close();
        } else if (isReceivedCertificateUnknownException(cause)) {
            if (logger.isTraceEnabled()) {
                logger.trace(new ParameterizedMessage("http client did not trust server's certificate; closing connection {}";




 

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