This screen is only available in LoadMaster for Amazon Web Services (AWS) products.

AWS HA Mode

Select the required HA mode for this unit. There are three options:

  • First HA Mode
  • Standby HA Mode
  • Non HA Mode

If you are only using a single LoadMaster, select Non HA Mode.

When using HA mode, one machine must be specified as the First (Active) and the second machine must be specified as the Second (Stand-by).

Note: HA will not work if both units have the same value selected for the AWS HA Mode.
Note: Synchronization of Virtual Service settings only occurs from the active unit to the standby unit. Changes made to the active unit will be replicated to the standby unit. However, changes made to the standby are never replicated to the active unit.
Note: If the active unit fails, connections will be directed to the standby unit. The active unit is active and will never become the standby, even if it fails. Similarly, the standby unit will never become the active unit. When the active unit comes back up, connections will automatically be directed to the active unit again.

You can tell, at a glance, which unit is active, and which is the standby, by checking the mode in the top bar of the LoadMaster.

Switch to Preferred Server

There are two possible values to select:

  • No Preferred Host: Each unit takes over when the other unit fails. No switchover is performed when the partner is restarted.
  • Prefer First: The HA1 (active) unit always takes over. This is the default option.

Partner Name/IP

Specify the host name or IP address of the HA partner unit.

Health Check Port

Set the port over which the health check will be run. The port must be the same on both the active and standby unit for HA to function correctly.

Health Check on All Interfaces

When this option is enabled, the health check listens on all interfaces. This is required when using a multi-arm configuration. If this is disabled, the health check listens on the primary eth0 address (this is the default behavior).

If a unit is in standby mode, WUI access is restricted to Local Administration only. Full WUI access is available if the unit is in an active or unchecked state.