Prerequisites and Assumptions
There are certain considerations that you must be aware of as you re-encrypt an EDEK.
- It is recommended that you perform EDEK re-encryption at the same time that you perform regular cluster maintenance because the operation can adversely impact CPU resources on the NameNode.
- In Cloudera Manager, review the cluster’s NameNode status, which must be in “Good Health”. If the cluster NameNode does not have a status of “Good Health”, then do not proceed with the re-encryption of the EDEK. In the Cloudera Manager WebUI menu, you can verify the status for the cluster NameNode, which must not be in Safe mode (in other words, the WebUI should indicate “Safemode is off”).
Running the re-encryption command without successfully verifying the preceding items will result in failures with errors.