Alauda Container Platform

Creating CephRBD Block Storage Class

CephRBD block storage is a built-in Ceph block storage for the platform, providing a Container Storage Interface (CSI) based storage access method that can deliver high IOPS and low-latency storage services, suitable for scenarios such as databases and virtualization. Before using this, you need to create a CephRBD block storage class.

Once a Persistent Volume Claim (PVC) is bound to the storage class, the platform will dynamically create a Persistent Volume based on the Persistent Volume Claim for business applications to use.

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Deploy Volume PluginCreate Storage Class

Deploy Volume Plugin

After clicking Deploy on the Distributed Storage page, choose either Deploying in Internal Mode or Deploying in External Mode.

Create Storage Class

  1. Go to Administrator.

  2. In the left navigation bar, click Storage Management > Storage Classes.

  3. Click Create Storage Class.

    Note: The following content is an example in form format, you can also choose YAML to complete the operation.

  4. Select CephRBD Block Storage, and click Next.

  5. Configure the parameters as required.

    ParameterDescription
    File SystemDefaults to EXT4, which is a journaling file system for Linux, capable of providing extent file storage and processing large files. The filesystem capacity can reach 1 EiB, with supported file sizes up to 16 TiB.
    Reclaim PolicyThe reclaim policy for persistent volumes.
    - Delete: The bound persistent volume will be deleted along with the persistent volume claim.
    - Retain: The bound persistent volume will be retained even if the persistent volume claim is deleted.
    Access ModesOnly supports ReadWriteOnce (RWO): it can be mounted by a single node in read-write mode.
    Assign ProjectPlease assign projects that can use this type of storage.
    If there are no projects currently needing this type of storage, you can choose not to assign one and update it later.

    Tip: The following parameters need to be set in distributed storage and will be directly applied here.

    • Storage Cluster: The built-in Ceph storage cluster in the current cluster.

    • Storage Pool: The logical partition used for storing data within the storage cluster.

  6. Click Create.