Functionbeat reached End of Support on October 18, 2023. You must consider moving your deployments to the more versatile and efficient Elastic Serverless Forwarder.
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Elastic Docs ›Functionbeat Reference [8.15] ›Troubleshoot ›Common problems

Logstash connection doesn’t work

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Logstash connection doesn’t work

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You may have configured Logstash or Functionbeat incorrectly. To resolve the issue:

  • Make sure that Logstash is running and you can connect to it. First, try to ping the Logstash host to verify that you can reach it from the host running Functionbeat. Then use either nc or telnet to make sure that the port is available. For example:

    ping <hostname or IP>
telnet <hostname or IP> 5044
  • Verify that the config file for Functionbeat specifies the correct port where Logstash is running.
  • Make sure that the Elasticsearch output is commented out in the config file and the Logstash output is uncommented.
  • Confirm that the most recent Beats input plugin for Logstash is installed and configured. Note that Beats will not connect to the Lumberjack input plugin. To learn how to install and update plugins, see Working with plugins.
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