Maintenance mode of a Multi-Master cluster

In maintenance mode, a Multi-Master cluster operates with restricted functionality. A cluster can get into maintenance mode during the following operations: Db2 password change and cluster restart.

The following table lists the operations that are restricted when a Multi-Master cluster is in a maintenance mode:
Table 1. Restricted operations when a Multi-Master cluster is in maintenance mode
Operation type Restricted operations
Multi-Master
  • Stop and restart cluster
  • Add, modify, remove master server from cluster
  • Update cluster status, synchronize master server
Key groups Add, delete, update, get, and rollover key groups
Certificates and keys
  • Add, delete, update, import keys
  • Add, delete, update, import certificates
Device group
  • Peer-to-peer device group operations
  • Import, update, delete device groups
Truststore Add to and delete certificates from truststore
KMIP object
  • Update client certificate
  • Delete and update client name
Note: You can take a backup of the IBM Security Guardium Key Lifecycle Manager data.