Convert a Duplex System to Switch-Based ConnectionΒΆ

On a StarlingX AIO Duplex system configured to use direct connections for the management and cluster host networks, you can convert to switch-based connections.

The connection type is initially configured at installation. You can change it at any time. You must use the CLI to make the change.

Prerequisites

Extra network cables are required to connect both controllers to the ToR switch.

The ToR switch must be configured correctly for communication with the controllers.

Procedure

  1. Use the system modify command to specify switch-based connection (duplex).

    ~(keystone_admin)$ system modify --system_mode=duplex

    This raises Config-out-of-date alarm messages on both controllers.

  2. Lock the standby controller.

  3. Disconnect the management and infrastructure cables from the standby controller.

    This raises Port failed and Interface failed alarms on the active controller for the management and infrastructure interfaces.

  4. Connect both controllers to the ToR switch.

    Connect the existing cables from the active controller to the ToR switch. Use additional cables to connect the standby controller to the ToR switch.

    Wait for the network interface alarms on the active controller to be cleared.

  5. Unlock the standby controller to update its configuration.

    Wait for the controller to be reported as Unlocked, Available, and Online, and for its Config-out-of-date alarm message to be cleared.

  6. Swact the controllers.

  7. Lock and then unlock the new standby controller to update its configuration.

    Wait for the controller to be reported as Unlocked, Available, and Online, and for its Config-out-of-date alarm message to be cleared.

Results

The system is now reconfigured to use switch-based connections for the internal networks.