Post Expansion Tasks

After the expansion is completed, you must perform different tasks depending on your environment.

Parent topic: Expanding a LightDB-A System

Removing the Expansion Schema

You must remove the existing expansion schema before you can perform another expansion operation on the LightDB-A system.

You can safely remove the expansion schema after the expansion operation is complete and verified. To run another expansion operation on a LightDB-A system, first remove the existing expansion schema.

  1. Log in on the coordinator host as the user who will be running your LightDB-A Database system (for example, gpadmin).

  2. Run the gpexpand utility with the -c option. For example:

    $ gpexpand -c

    Note Some systems require you to press Enter twice.

Setting Up PXF on the New Host

If you are using PXF in your LightDB-A Database cluster, you must perform some configuration steps on the new hosts.

There are different steps to follow depending on your PXF version and the type of installation.

PXF 5

  • You must install the same version of the PXF rpm or deb on the new hosts.

  • Log into the LightDB-A Coordinator and run the following commands:

    gpadmin@gpcoordinator$ pxf cluster reset
gpadmin@gpcoordinator$ pxf cluster init

PXF 6

  • You must install the same version of the PXF rpm or deb on the new hosts.

  • Log into the LightDB-A Coordinator and run the following commands:

    gpadmin@gpcoordinator$ pxf cluster register
gpadmin@gpcoordinator$ pxf cluster sync