Understanding the mapping of OpenStack commands to IBM Storage Scale administrator commands

Use this information to map OpenStack commands to IBM Storage Scale administrator commands.

In IBM Storage Scale, for Object storage, several OpenStack commands are replaced with IBM Storage Scale commands for better maintenance. The following information identifies those commands.
  1. Ring building
    The swift-ring-builder command must be used to view the object, container, and account ring on any IBM Storage Scale protocol node.
    Note: You must not directly run any commands that modify the ring.
    All ring maintenance operations are handled automatically by the CES infrastructure.

    For example, when a new CES IP address is added to the configuration, all rings are automatically updated to distribute Swift virtual devices evenly across CES IP addresses.

    The controller copy of each ring builder file is kept in the IBM Storage Scale Cluster Configuration Repository (CCR). Changes made locally to the ring files are overwritten with the controller copy when monitoring detects a difference between the ring file in CCR and the file in /etc/swift.

  2. Configuration changes

    The openstack-config command must not be used to update any of the configuration files that are consumed by IBM Storage Scale for Object storage. Furthermore, you must not edit these files directly, but instead modify them using the mmobj config change command.

    The controller copy of object and related configuration files are kept in the IBM Storage Scale CCR. Changes made locally to these config files are overwritten with the controller copy when monitoring detects a difference between the configuration file in CCR and the file in /etc/swift or /etc/keystone.