(a) Information needed in the primary and secondary systems
It is essential to check that the following information is the same in both systems (primary system and secondary system):
- Versions of HiRDB and related programs
- HiRDB administrator's environment (user ID, group ID, and environment variables)
- Absolute path names of the HiRDB directories
- HiRDB system definitions
- HiRDB file definition formats
- Users' execute-form programs
(b) Notes on environment setup
- Set up the HiRDB environment in both the primary system and the secondary system. Use the same version of HiRDB in the primary system and the secondary system. Also, when upgrading HiRDB, be sure to upgrade both the primary system and the secondary system.
- Do not create the HiRDB directory on a shared disk.
- When a DNS server is not used, register a re-allocatable IP address in the hosts file.
- To operate a HiRDB/Parallel Server in the server mode, install the following products and set up the environment:
- Hitachi HA Toolkit Extension (for the primary and secondary system machines) (not necessary when the cluster software used is HA monitor)
- The system switchover facility is not applicable to a recovery-unnecessary front-end server unit.
- Notes on using ClusterPerfect
- Use the following command to stop the ClusterPerfect daemon before setting up the HiRDB environment; to execute this command, you must have root privileges:
- # /etc/rc.d/init.d/dncware_daemon stop
- Execute the following command to start the ClusterPerfect daemon:
- # /etc/rc.d/init.d/dncware_daemon start