This chapter explains how to back up and restore the system configuration.
If a severe fault such as hardware failure occurs on a server, use the backup and restore functionality to recover.
Note
The backup and restore functionality described in this chapter enables the recovery of the system configuration or the definition information. It cannot, however, recover Hadoop applications or job data.
Backing up and restoring master servers that use replicated configuration
If a fault occurs on either the primary master server or the secondary master server, the master server system configuration can be recovered.
If a fault occurs on both the primary master server and the secondary master server, the restore functionality cannot be used to rebuild the master servers, so create a backup of the system if required.
