Convert a Duplex System to Direct ConnectionΒΆ

On a StarlingX AIO system configured to use switch-based network connection for the management and cluster host networks, you can convert to direct (peer-to-peer) connection.

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

Procedure

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

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

    This raises Config-out-of-date alarm messages on both controllers.

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

    Wait for the controller to be reported as Unlocked, Available, and Online, and its Config-out-of-date alarm message to be cleared.

  3. Swact the controllers.

  4. Lock the new standby controller.

  5. Disconnect the management and infrastructure cables from the ToR switch.

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

  6. Reconnect the cables in a peer-to-peer configuration.

    Wait for the network interface alarms to be cleared.

  7. Unlock the standby controller to update its configuration.

    Wait for the controller to be reported as Unlocked, Available, and Online, and its Config-out-of-date alarm message to be cleared.

Results

The system is now reconfigured to use direct connections for the internal networks.