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Kafka settings

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Kafka settings affect the health and performance of the database cluster.When you create a cluster, the settings are set to default values.The default values are chosen to ensure high cluster performance and vary depending on the cluster configuration.

You can:

  • see the default values for the settings and change them when creating the cluster;
  • or see the settings and change them in an already created cluster.

We recommend that you change the settings only when necessary — incorrect values may render the cluster inoperable or degrade its performance.

View list of settings

You can view a list of settings available for modification when creating a cluster or changing settings.

If you have changed settings, you can separately view a list of settings with values different from the default values.

A detailed description of all settings can be found in the Configuration section of the Kafka documentation.

  1. In the Dashboard, on the top menu, click Products and select Cloud Databases.
  2. Open the Active tab.
  3. Open the cluster page → Settings tab.
  4. In the DBMS Settings block, click Change.
  5. Optional: to see only settings where you have changed the default value, check the Show changed settings checkbox.
  6. Take a look at the settings.

Change settings

carefully

We recommend that you change the settings only when necessary — incorrect values may render the cluster inoperable or degrade its performance.

After changing some settings, the cluster will automatically reboot and will be unavailable during the reboot.The reboot will start immediately after saving the changes.The list of such settings can be found in the subsection List of settings that require a reboot.

  1. In the Dashboard, on the top menu, click Products and select Cloud Databases.
  2. Open the Active tab.
  3. Open the cluster page → Settings tab.
  4. In the DBMS Settings block, click Change.
  5. Indicate the new values.
  6. Click Save.

List of settings that require a reboot

  • log.retention.hours;
  • log.retention.minutes;
  • num.partitions;
  • offsets.retention.minutes;
  • socket.receive.buffer.bytes;
  • socket.send.buffer.bytes.