Understanding the mapping of OpenStack commands to IBM Spectrum Scale administrator commands
Use this information to map OpenStack commands to IBM Spectrum Scale™ administrator commands.
- Ring Building
The swift-ring-builder command should only be used to view the object, container, and account ring on any IBM Spectrum Scale protocol node. The user should not directly execute 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 master copy of each ring builder file is kept in the IBM Spectrum Scale Cluster Configuration Repository (CCR). Changes made locally to the ring files will be overwritten with the master copy when monitoring detects a difference between the ring file in CCR and the file in /etc/swift.
- Configuration Changes
The openstack-config command should not be used to update any of the configuration files consumed by IBM Spectrum Scale for Object storage. Furthermore, you should not edit these files directly, but instead modify them using the mmobj config change command.
The master copy of object and related configuration files are kept in the IBM Spectrum Scale CCR. Changes made locally to these config files will be overwritten with the master copy when monitoring detects a difference between the configuration file in CCR and the file in /etc/swift or /etc/keystone.