[elasticsearch.server][WARN] caught exception while handling client http traffic, closing connection Netty4HttpChannel

Elastic Stack Elasticsearch
1

Hi,
I get the following error in the cluster log about every hour.

[elasticsearch.server][WARN] caught exception while handling client http traffic, closing connection Netty4HttpChannel

Any suggestions on where to start troubleshooting this error? The network is stable and the cluster load is light so I think those two areas are good.

Thanks

2

Something is trying to access Elasticsearch using http instead of https may be?

But may be you should share more logs?

3

Caught exception while handling client http traffic,
closing connection Netty4HttpChannel{localAddress=/1x.xx.xxx.xxx:xxxx,
remoteAddress=/1x.xxx.xxx.xx:xxxxx}io.netty.handler.codec.PrematureChannelClosureException: Channel closed while still aggregating message

4

Our ES environment has many computers using Elastic Agen7 8.17.4 and 8.17.5 sending Endpoint integration logs to elasticseach. Such errors are causing lots of lagging in Kibana's performance. Any thoughts to resolve it?

5

To troubleshoot the [WARN] caught exception while handling client http traffic error in Elasticsearch:

  1. Check Elasticsearch Logs: Look for additional details around the warning, such as specific exceptions or stack traces.
  2. Network and Timeouts: Verify there are no intermittent network issues or timeouts causing connection problems.
  3. Resource Utilization: Check CPU, memory, and disk usage to ensure there are no resource bottlenecks.
  4. Upgrade Elasticsearch: Ensure you're using the latest stable version to avoid known bugs.
  5. Configuration: Review HTTP connection settings in Elasticsearch for potential misconfigurations.
  6. Client Issues: Ensure the client application is sending valid requests and handling connections properly.
  7. Netty Compatibility: Verify the Netty version is compatible with your Elasticsearch setup.

These steps should help pinpoint the issue.