Creating an Access Zone

Prerequisites

A subnet has been created.

Procedure

1. Choose Resources > Access > Service Network.
2. Select the desired account from the Account drop-down list.
3. Click Create Access Zone.

   The Create Zone page is displayed.

4. Configure basic zone information.

   Table 1 describes related parameters.

   Table 1 Basic zone parameters

   Parameter	Description
   Name	Indicates the name of the zone. NOTE: The name must be unique. The name contains 1 to 31 characters. The name can contain only letters, digits, underscores (_), hyphens (-), and periods (.), and must start with a letter and cannot end with an underscore (_), hyphen (-), or period (.).
   Home Subnet	Indicates the subnet to which the zone belongs.
   Sub-domain Name	Indicates the sub-domain name of the zone. The sub-domain name must be used together with the general DNS service of the subnet. This parameter needs to be set only when the file or HDFS service is enabled. NOTE: This parameter can be set only after the general DNS service is enabled for the home subnet. The value consists of letters, digits, and hyphens (-), and cannot start or end with a hyphen (-).
   Network Type	Indicates the network type of ports in the zone. After this parameter is specified, only ports of the specified network type can be added to the port pool. It is recommended that a subnet contain zones of only one network type.
   Associated Namespace	If the HDFS service is enabled for the storage pool, click Select. On the Associate Namespace page that is displayed, select a namespace and click OK. NOTE: By default, the associated namespace takes effect 3 to 5 minutes later. The time when the namespace takes effect can be modified. For details about the modification commands, see "Setting the Configuration File Cache Policy" in the Maintenance Commands. This parameter is displayed only when IP Address Type of the home subnet is IPv4.
   DNS Policy	Indicates the DNS policy of the zone. Possible options are as follows: Round robin If clients access services using domain names, nodes are selected to process service requests of clients based on the sequence recorded in the cache. Node connections If clients access services using domains names, nodes with the fewest connections are selected to process service requests of clients. CPU usage If clients access services using domains names, nodes with the lowest CPU usage are selected to process service requests of clients. Node throughput If clients access services using domains names, nodes with the lowest throughput are selected to process service requests of clients. NOTE: This parameter can be set only after the general DNS service is enabled for the home subnet.
   DNS Service	Indicates whether to enable the DNS service to resolve the sub-domain name of the Access zone. After the DNS service is enabled for the subnet, a sub-domain name is set for the zone, and the DNS service is enabled for the zone, you can access services in the zone through a domain name. NOTE: This parameter can be set only after the general DNS service is enabled for the home subnet.
   IP Address Failover	Indicates whether to enable IP address failover. After this parameter is enabled, when a node is faulty, its IP address can be automatically allocated to another normal node. Therefore, clients can continue to access the storage system using this IP address. You are advised to enable this function for Access zones.

5. Click Next.
6. Configure the IP address pool.
   

   To prevent IP address conflicts among multiple nodes, do not configure static IP addresses for service ports of storage nodes in advance.

   • Adding an IP address
     1. Click Add.

        The Add IP Address page is displayed.

     2. Configure the IP address.

        Table 2 describes related parameters.

        

        Plan IP addresses properly and ensure that the added IP addresses are not used by other services.

        Table 2 IP address parameters

        Parameter	Description
        Type	Indicates the IP address adding type. Possible options are Single Address and Address Segment.
        IP Address	The value is the planned service IP address when Type is set to Single Address.
        Start IP Address	The value is the planned start service IP address when Type is set to Address Segment.
        End IP Address	The value is the planned end service IP address when Type is set to Address Segment. NOTE: A maximum of 512 IP addresses can be contained in an IP address segment.

     3. Click OK.
   • Modifying an IP address
     1. Click More on the right of the desired IP address and select Modify.

        The Modify IP Address page is displayed.

     2. Modify the IP address information. Table 2 describes related parameters.
     3. Click OK.
   • Removing an IP address
     Select one or more desired IP addresses and click Remove.

     

     You can also click More on the right of a desired IP address and select Remove.

7. Click Next.
8. Configure the port pool.
   

   By default, one port is assigned one service IP address. You can run the following command to change the number of service IP addresses that can be allocated to a port. A maximum of 16 service IP addresses can be allocated to a port.

   change cluster_config general port_ip_number

   1. Click Add.

      The Add Port page is displayed.

   2. Select the ports planned for service network communication. You can select a single port or bond ports. To add or modify bond ports, click Manage Service Bond Port on the displayed page.
      

      You are advised to select bond ports.

   3. (Optional) Manage service bond ports.
      1. Click Manage Service Bond Port.

         The Manage Service Bond Port page is displayed.

      2. Click Create.

         The Create Bond Port page is displayed.

      3. Configure the port information. Table 3 describes related parameters.

         Table 3 Port parameters

         Parameter	Description
         Bond Port Name	Indicates the name of the bond port.
         Transmission Protocol	Indicates the transmission protocol of the bond port. Possible options are TCP and IB.
         Physical Port	Indicates the physical port to be bound.
         Bond Mode	Indicates the bond mode. When Transmission Protocol is set to TCP, bond1 and bond4 are supported. When Transmission Protocol is set to IB, only bond1 is supported. bond1: active/standby mode bond4: dynamic link aggregation mode
         MTU (Bytes)	Indicates the maximum transmission unit of the bond port.

      4. Click OK.
      5. Click Close.
   4. Click OK.

9. Click OK.
10. Click Close.