Application Delivery Management

Force a failover to the secondary NetScaler instance

March 11, 2024

Contributed by:

R C

You might want to force a failover if, for example, you need to replace or upgrade the primary Citrix Application Delivery Controller (ADC) instance. You can force failover from either the primary instance or the secondary instance. When you force a failover on the primary instance, the primary becomes the secondary and the secondary becomes the primary. Forced failover is only possible when the primary instance can determine that the secondary instance is UP.

A forced failover is not propagated or synchronized. To view the synchronization status after a forced failover, you can view the status of the instance.

A forced failover fails in any of the following circumstances:

You force failover on a standalone system.
The secondary instance is disabled or inactive. If the secondary instance is in an inactive state, you must wait for its state to be UP to force a failover.
The secondary instance is configured to remain secondary.

The NetScaler instance displays a warning message if it detects a potential issue when you run the force failover command. The message includes the information that triggered the warning, and requests confirmation before proceeding.

You can force a failover on a primary instance or on a secondary instance.

To force a failover to the secondary NetScaler instance using NetScaler ADM:

In NetScaler Application Delivery Management (ADM), navigate to Infrastructure > Instances > NetScaler > VPX tab, and then select an instance .
Select instances in an HA setup from the instances listed under the selected instance type.
From the Action menu, select Force Failover.
Click Yes to confirm the force failover action.

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Force a failover to the secondary NetScaler instance

March 11, 2024

Contributed by:

R C

March 11, 2024

Contributed by:

R C

Force a failover to the secondary NetScaler instance

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