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Allow kafka to be configured #5867

merged 1 commit into from Apr 17, 2019


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commented Apr 12, 2019

Signed-off-by: Pierre De Paepe


This little patch will allow graylog administrators to define a custom Kafka group_id in related input panel.
To avoid update issue, current group "graylog2" remains the default value.

Motivation and Context

If you have a big Kafka cluster with multiple graylog clusters subscribed on, each time a unhealthy consumer flaps, the rebalancing order is sent to all graylog nodes introducing unecessary stress on log ingestion.
An easy way to avoid it, consists to define for each graylog cluster a specific consumer group name.

How Has This Been Tested?

In production : ~20 graylog clusters for one kafka.

Screenshots (if appropriate):

group id

Types of changes

  • Bug fix (non-breaking change which fixes an issue)
  • [x ] New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to change)


  • [x ] My code follows the code style of this project.
  • [x ] My change requires a change to the documentation.
  • I have updated the documentation accordingly.
  • I have read the CONTRIBUTING document.
  • I have added tests to cover my changes.
  • All new and existing tests passed.
Allow kafka to be configured
Signed-off-by: Pierre De Paepe <>

@florianvolle florianvolle requested a review from bernd Apr 15, 2019


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commented Apr 15, 2019

@pdepaepe Thank you for opening the new PR! I will review this in the next days.

@bernd bernd added the feature label Apr 15, 2019

bernd approved these changes Apr 17, 2019

@bernd bernd merged commit dd5c025 into Graylog2:master Apr 17, 2019

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commented Apr 17, 2019

Refs #3976


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commented Apr 17, 2019

@pdepaepe Thank you!

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