Node maintenance
You must provide the value for the hdds.scm.replication.maintenance.remaining.redundancy parameter to put the cluster’s nodes under maintenance.
The hdds.scm.replication.maintenance.remaining.redundancy parameter defines the number of redundant containers in a group which must be available for a node to enter maintenance.
If you are putting a node into maintenance mode and reduces the redundancy below the value
defined, the node will remain in the ENTERING_MAINTENANCE state until a
new replica is created.
| Parameter | Default value | Description |
|---|---|---|
| hdds.scm.replication.maintenance.remaining.redundancy | Empty | The value is taken from the Ozone default configuration. |
| 1 | The EC container has at least dataNum + 1 online allowing the loss of 1 more replica before data becomes unavailable. | |
| hdds.scm.replication.maintenance.replica.minimum | 2 | This is for Ratis containers only. |
