Briefly, this error occurs when there’s a network issue or a problem with the Elasticsearch node’s transport layer. This could be due to a faulty network connection, a misconfigured firewall, or an issue with the Elasticsearch cluster itself. To resolve this, you can check the network connection, ensure the firewall is correctly configured to allow communication between nodes, and check the health of the Elasticsearch cluster. If the problem persists, consider restarting the Elasticsearch node or the entire cluster.
This guide will help you check for common problems that cause the log ” exception from server channel caught on transport layer [” + channel + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: .
Log Context
Log “exception from server channel caught on transport layer [” + channel + “]” classname is TcpTransport.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
protected static void onServerException(TcpServerChannel channel; Exception e) {
if (e instanceof BindException) {
logger.debug(() -> "bind exception from server channel caught on transport layer [" + channel + "]"; e);
} else {
logger.error(() -> "exception from server channel caught on transport layer [" + channel + "]"; e);
}
}
protected void serverAcceptedChannel(TcpChannel channel) {
boolean addedOnThisCall = acceptedChannels.add(channel);
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