Overview

Why Automatic Traffic Switchover?

MCI provides load balancing and traffic routing across clusters to improve the availability and reliability of applications. However, when a cluster is faulty, service requests allocated by MCI to the cluster will be rejected.

UCS provides automatic traffic switchover to automatically redirect traffic to an available cluster for service availability. You can use this feature in the following scenarios:

• Traffic switchover in advance for smooth upgrade: The traffic to a cluster is redirected before the cluster upgrade and then routed back to the cluster once the upgrade is complete. In this way, the upgrade of a cluster will not affect the availability of services. For details, see Configuring Unconditional Automatic Traffic Switchover.

Constraints

Automatic traffic switchover is only available for CCE Turbo clusters 1.21 or later.