Perform a disk hot swap for DataNodes using Cloudera Manager
You can replace disks on your CDP Private Cloud Base cluster without shutting down a DataNode. This is referred to as hot swap.
-
Configure data directories to remove the disk you are swapping
out.
- Enter a Reason for change, and then click Save Changes to commit the changes.
- Refresh the affected DataNode. Select .
- Remove the old disk and add the replacement disk.
- Change the value of the DataNode Data Directory property to add back the directories that are mount points for the disk you added.
- Enter a Reason for change, and then click Save Changes to commit the changes.
- Refresh the affected DataNode. Select Actions > Refresh DataNode configuration.
- Run the
hdfs fsck /
command to validate the health of HDFS.