Decommissioning Ozone DataNodes

You can remove Ozone DataNodes from the cluster by decommissioning the DataNode instances using Cloudera Manager.

Ensure that the cluster has sufficient space to hold the additional storage containers of the DataNodes that you are decommissioning.
  1. In Cloudera Manager, go to the Ozone service.
  2. Click Instances.
  3. Select the DataNode instances that you want to decommission.
  4. Select Actions for Selected>Decommission.
  5. Click Decommission to confirm.
    Ozone initiates decommissioning of the selected DataNodes. The process takes time depending on the number of storage containers to replicate. After the process is complete, the Instances page shows the Commissioned State of the selected DataNodes as Decommissioned.