ozone storing data

Placing Ozone DataNodes in offline mode

You can temporarily remove Ozone DataNodes from the cluster by placing the DataNode instances in offline mode using Cloudera Manager.

Ensure that the cluster has sufficient space to hold the additional storage container copies belonging to the DataNode that you are placing in offline mode.

In Cloudera Manager, go to the Ozone service.
Click Instances.
Select the DataNode instances that you want to place in offline mode.
Select Actions for Selected>Enter Offline mode.
Click Enter Offline mode to confirm.
Ozone starts preparing the selected DataNodes for offline mode. The process takes time depending on the number of storage containers to replicate. After the process is complete, the DataNode is stopped, and the Instances page shows the Commissioned State of the selected DataNodes as Offlined.

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