HA Failover Overview
Sun xVM Ops Center HA configurations use manual failover procedures to transfer Sun xVM Ops Center functions from the primary Enterprise Controller to the secondary Enterprise Controller. Depending on the nature of the failure that takes place on an Enterprise Controller, different or additional procedures might be required. Failover generally follows these main steps:
- Shutting down the primary Enterprise Controller, if possible
- Preparing the secondary Enterprise Controller for failover
- Transferring the storage asset that holds the /var/opt/sun/xvm directory structure from the primary Enterprise Controller to the secondary Enterprise Controller
- Running the harestore program to restore Sun xVM Ops Center configuration on the secondary Enterprise Controller
- Rebooting the secondary Enterprise Controller and starting Sun xVM Ops Center operations
You must prevent the primary Enterprise Controller from using the same IP addresses that the secondary Enterprise Controller uses. The harestore command configures the secondary Enterprise Controller to use the IP addresses of the primary Enterprise Controller. As you repair the primary Enterprise Controller, prevent it from accessing the networks where the secondary Enterprise Controller is operational.
Where to Go From Here
See Shutting Down the Primary Enterprise Controller to learn how to shut down a primary Enterprise Controller.
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