Updating a Storage Backend

1: Updating the Password of a Storage Backend Using oceanctl
2: Update the Login Authentication Type of a Storage Backend Using oceanctl
3: Manually Updating a Storage Backend

When oceanctl is used to update storage backend information, only the storage backend password can be updated.
If the backend account password is updated on the storage device, the CSI plug-in will retry due to login failures. As a result, the account may be locked. If the account is locked, change the password by referring to An Account Is Locked After the Password Is Updated on the Storage Device .

1 - Updating the Password of a Storage Backend Using oceanctl

Obtaining the Help Information About Updating a Backend

Run the following command to obtain the help information about updating a storage backend.

oceanctl update backend -h

The following is an example of the command output.

Update a backend for Ocean Storage in Kubernetes

Usage:
  oceanctl update backend <name> [flags]

Examples:
  # Update backend account information in default(huawei-csi) namespace
  oceanctl update backend <name>  --password

  # Update backend account information in specified namespace
  oceanctl update backend <name> -n namespace --password

  # Update backend account information with ldap authentication mode in default(huawei-csi) namespace
  oceanctl update backend <name> --password --authenticationMode=ldap

  # Update backend account information with local authentication mode in default(huawei-csi) namespace
  oceanctl update backend <name> --password --authenticationMode=local

  # Update backend account information with ldap authentication mode in specified namespace
  oceanctl update backend <name> -n namespace --password --authenticationMode=ldap

Flags:
      --authenticationMode string   Specify authentication mode
  -h, --help                        help for backend
  -n, --namespace string            namespace of resources
      --password                    Update account password

Global Flags:
      --log-dir string   Specify the directory for printing log files. (default "/var/log/huawei")

Example of Updating the Password of a Backend

Run the following command to update a storage backend. In the command, backend-name indicates the name of the storage backend to be updated.
```
oceanctl update backend backend-name --password
```
Enter the user name and new password as prompted:
```
Please enter this backend user name:admin
Please enter this backend password:

backend/backend-name updated
```

2 - Update the Login Authentication Type of a Storage Backend Using oceanctl

Example of Updating the Backend Login Authentication Type to LDAP

Run the following command to update a storage backend. In the command, backend-name indicates the name of the storage backend to be updated.

oceanctl update backend backend-name --password --authenticationMode=ldap

Enter the user name and new password as prompted:

Please enter this backend user name:admin
Please enter this backend password:

backend/backend-name updated

3 - Manually Updating a Storage Backend

PVC provisioning must be based on a configured storage backend. Therefore, if a PVC has been provisioned on a storage backend, do not change the storage backend.
The name uniquely identifies a storage backend. The name of a storage backend with a PVC provisioned cannot be changed.
After a storage backend is modified, the new configuration applies only to volumes to be provisioned.
Do not perform volume management operations during the modification of a storage backend.

Procedure

Delete the storage backend to be modified. For details, see Deleting a Storage Backend .
Create a storage backend with the same name. For details, see Creating a Storage Backend . The storage backend name cannot be changed.