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Scale up the Kafka cluster
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Scale up the Kafka cluster

The Kafka cloud database cluster can be scale. For example:

  • increase vCPU and RAM to improve cluster performance;
  • change fixed node configuration to arbitrary configuration or arbitrary configuration to fixed configuration — disk size must necessarily be larger than in the previous configuration, the number of vCPUs and RAM can be reduced or increased.

Check out the list node configurations.

While the changes are being applied, the master node will be stopped and the cluster will be temporarily unavailable for reads and writes.

The configuration change time depends on the amount of data in the cluster.

Scale up the cluster⁠

  1. Scale the cluster when users are least active.
  2. In control panel go to Cloud platform → Databases.
  3. Open the cluster page → tab Settings.
  4. Click Scale up the cluster.
  5. Select another fixed or arbitrary configuration. You can only select a configuration with more disk space. The number of vCPU and RAM can be reduced or increased.
  6. Click Save.
  7. After scaling clear the DNS cache.
  8. Verify that the cluster has scaled correctly.

Clear DNS cache⁠

  1. Open the CLI.

  2. Clear the DNS cache:

    sudo systemctl restart systemd-resolved