Storage Backend Management

Backend is an abstract concept of Huawei storage resources. Each Huawei storage device can abstract multiple backend resources using features such as tenants, storage pools, and protocols. Each backend exists independently and defines Huawei storage information required for providing persistent volumes for Kubernetes clusters.

This chapter describes how to use the oceanctl tool to manage storage backends, including creating, querying, updating, and deleting backends.

Description of the oceanctl Tool

• You have obtained the oceanctl tool, copied the oceanctl tool to the environment directory, for example, /usr/local/bin, and obtained the execute permission. The oceanctl tool is stored in /bin/oceanctl of the software package.
• The oceanctl tool depends on kubectl (for the Kubernetes platform) or oc (for the OpenShift platform) commands. Therefore, you need to run the tool on a node where kubectl or oc commands can be executed.
• By default, the user who runs oceanctl commands must have the read and write permissions on the /var/log directory. If you do not have the permissions on the directory, run the –log-dir=/path/to/custom command to specify a directory on which you have the permissions as the log file directory.
• huawei-csi is the default namespace used by oceanctl to create a backend.
• For details about oceanctl commands, see Description of oceanctl Commands.