Adding Nodes to a Cluster

This operation enables you to expand the capacity of a cluster when its capacity is insufficient.

Procedure

  1. On the menu bar of DeviceManager, click and select Add Node,
  2. Select the nodes to be added to the cluster.

    • Batch Import Node
      1. Click Batch Import Node.
      2. In the Please choose files area, click , select the file to be uploaded, and click Open.

        You can click Download the template, enter parameters of the nodes to be added in the downloaded template, and upload the template.

      3. Click Upload.
      4. Click Authenticate and enter the user name and password for authentication.
      5. Click Submit.
      6. After the nodes are configured successfully, click Next.
    • Manually Add Node
      1. Click Manually Add Node.

        The Add Node page is displayed on the right.

      2. Configure basic node and authentication information. Table 1 describes related parameters.
        Table 1 Basic node and authentication information

        Parameter

        Description

        Management IP Address

        Indicates the management IP address of a node.

        Cabinet

        Indicates the cabinet where a node resides.

        Chassis

        Indicates the chassis where a node resides.

        Slot

        Indicates the slot number where a node resides.

        Server Model

        Indicates the model of the server where a node resides.

        Node Name

        Indicates the name of a node.

        Node Role

        Indicates the role of a node. Possible options are Storage and Compute.

        • Storage: indicates that components, except management components, can be installed on a storage node.
        • Compute: indicates the user application server.

        Username

        Indicates the user name for logging in to the authentication server.

        Password

        Indicates the user password.

        Password of root

        Indicates the password of user root.
      3. Click OK.
      4. Click Submit.
      5. After the node is configured successfully, click Next.

  3. Configure storage networks.

    • By default, DeviceManager configures the storage network as the front- and back-end storage networks are converged. You can also modify the configuration file to deploy the front- and back-end storage networks separately.
    • If a front- and back-end shared network is deployed during initialization, you can only deploy the shared network. If front- and back-end separated networks are deployed during initialization, you can only deploy separated networks.
    1. Configure the front- and back-end shared network. Table 2 describes related parameters.
      Table 2 Front- and back-end shared network parameters

      Parameter

      Description

      Use Configured Storage IP Addresses Only

      If you select Yes, the system only allocates configured storage IP addresses in the specified IP address range to the nodes.

      Transmission Protocol

      Indicates the transmission protocol used by the network. Possible options are TCP, IB, and RoCE.

      Bond Mode

      Indicates the bond mode of the storage network.

      • bond1: active/standby mode
      • bond4: dynamic link aggregation mode
        NOTE:
        • When Transmission Protocol is set to TCP, bond1 and bond4 are supported. You are advised to select bond4.
        • When Transmission Protocol is set to IB, only bond1 is supported. In this case, bond1 supports the load balancing function.
        • When Transmission Protocol is set to RoCE, bond1 and bond4 are supported. You are advised to select bond4.

      IP Address Range

      Indicates the IP address segment of the storage network.

      NOTE:
      • If you do not select Use Configured Storage IP Addresses Only, the IP addresses in the specified IP address segment cannot be in the same network segment as those of other ports on the node.
      • In the event of using an IPv4 address:
        • A 32-bit IPv4 address is divided into four 8-bit fields that are expressed in dotted decimal notation.
        • Each field of the IPv4 address cannot be left empty and must be an integer.
        • The value of the leftmost field ranges from 1 to 223 (excluding 127).
        • The values of the other fields range from 0 to 255.
        • An IPv4 address cannot be set to a special address such as a broadcast address.
        • Example: 192.168.1.100
      • In the event of using an IPv6 address:
        • A 128-bit IPv6 address is divided into eight 16-bit fields. Each 16-bit field consists of four colon-separated hexadecimal numbers.
        • In each 16-bit field, leading zeros can be omitted for simplicity. However, at least one digit must be reserved in each field.
        • To achieve further simplicity, you can use a double colon (::) in place of a series of zeros. A double colon can be used only once in an IPv6 address. It can also represent the neighboring consecutive zeros at the beginning or end of an IPv6 address.
        • An IPv6 address cannot be set to a special one, such as a network address, loopback address, or multicast address.
        • Example: fc00::1234

      Mask/Prefix

      When an IPv4 address is used, this parameter indicates the subnet mask of the storage IP address and identifies the subnet to which the IP address belongs. When an IPv6 address is used, this parameter indicates the prefix length of the IPv6 address.

      Port

      Indicates the port used by an IP address.

      Click to go to the Manage Bond Port page. You can configure a port as required. For details, see Managing Bond Ports.
    2. Click Preview.

      Configuration information in the table displayed on the page will be updated.

    3. Click Submit.
    4. After the storage network is configured successfully, click Next.

  4. Install nodes.

    1. (Optional) If the installation fails, you can click Restore Factory Setting to reconfigure the nodes.
    2. Click Install.
    3. (Optional) After the cluster is installed successfully, you can choose to expand storage pools and replication clusters, and configure iSCSI services as required.
    4. Click Finish.

Parent topic: Managing Storage Settings