IBM Tivoli Monitoring > Version 6.3 Fix Pack 2 > Installation Guides > Installation Guide > Upgrade from a previous installation > Scenario: a rolling product upgrade
IBM Tivoli Monitoring, Version 6.3 Fix Pack 2
Special instructions for reseeding a Hot Standby monitoring server
Follow the steps in this section if your site has implemented a Hot Standby monitoring server with agent switching and you want to ensure a monitoring server remains active at all times, even while upgrading its application support (remember that upgrading any IBM Tivoli Monitoring process shuts down all local Tivoli Management Services components while the upgrade takes place).
This procedure assumes your site needs to keep a Hot Standby Tivoli Enterprise Monitoring Server running at all times. If that is not necessary, it is simpler to shut down the standby monitoring server until after seeding takes place, then start it back up.
- Upgrade one of the two hubs, either the active one or the backup. During this process, the other hub monitors the IBM Tivoli Monitoring environment.
- Upgrade the other hub, during which time the newly upgraded hub monitors your environment.
- With both upgraded hubs running, one in active mode and the other in backup mode, reseed the active hub without restarting it.
- Reseed the backup hub.
- Restart the hub you want to be active, during which time the other hub monitors the IBM Tivoli Monitoring environment.
- Restart the hub you want to be in backup mode, which puts the other hub in active mode and this hub in backup mode.
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Scenario: a rolling product upgrade