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System Administration Guide: Devices and File Systems
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Configuring the iSNS Server

You can configure the iSNS server using as described in the following task maps and sections.

Task

For Instructions

1. Accept the default properties of the iSNS server or change them.

A. Notification of state changes of the server

How to Set Notifications for Changes in Server State

B. Number of attempts to determine a client's availability

How to Set the Number of Retries for Client Inquiries

C. Location of file that stores client data.

How to Specify the Data Store Location

2. Enable the iSNS server and display the settings.

How to Enable the iSNS Server Daemon

How to Display the Current Server Configuration

3. Register all clients with the iSNS server.

Use the client's management interface's iSCSI configuration function to specify the IP address of the iSNS server and to allow discovery.

4. Enable the default discovery domain set.

How to Enable the Default Discovery Domain Set

After these tasks, the iSNS server is operating in a minimal manner. All of the clients are in the default discovery domain and are unassigned. Each one can identify and get access to all of the other ones.

5. Create the discovery domain sets for your site.

How to Create the Discovery Domain Sets

6. Create the discovery domains for your site.

How to Create the Discovery Domains

7. Add each discovery domain to one or more discovery domain set.

How to Add a Discovery Domain to a Discovery Domain Set

8. Assign clients to one or more discovery domains.

How to Assign Clients to a Discovery Domain

9. Verify the membership of clients in discover domains and the membership of discovery domains in discovery domain sets.

How to Display the Status of a Discovery Domain Set

How to Display the Status of a Discovery Domain

How to Display the Status of Clients

The next section provides instructions for setting up the iSNS environment. The following topics are discussed:

Setting Up the iSNS Administrative Settings

This section provides the procedures for changing the default administrative settings of the iSNS service and for starting the iSNS daemon. If you change a setting after the iSNS server has been started, you need to refresh the iSNS server. If you change the data store location, you need to restart the iSNS server.

See the man page for the isns(1M) command details about these operations.

How to Set Notifications for Changes in Server State

By default, all clients are notified when the iSNS server is not available. To disable these notifications, change the Management_SCNs_Enabled property.

  1. Use the “iSNS Server Management” RBAC profile to obtain the authorizations needed for managing the iSNS service.

    Roles contain authorizations and privileged commands. For more information about roles, see Configuring RBAC (Task Map) in System Administration Guide: Security Services.

  2. Use the svccfg command to disable the property:
    # svccfg -s svc:/network/isns_server setprop\config/Management_SCNs_Enabled=no
  3. Reload the server configuration:
    # svcadm refresh svc:/network/isns_server 
How to Set the Number of Retries for Client Inquiries

The default number of retries is 3. If the server does not get a response to three inquiries, it registers that client as unavailable. To change the number of retries, change the value of the ESI Retry Threshold property.

  1. Use the “iSNS Server Management” RBAC profile to obtain the authorizations needed for managing the iSNS service.

    Roles contain authorizations and privileged commands. For more information about roles, see Configuring RBAC (Task Map) in System Administration Guide: Security Services.

  2. Use the svccfg command to change the property to, for example, 6 retries:
    # svccfg -s svc:/network/isns_server setprop\config/ESI_retry_threshold_count=6
  3. Reload the server configuration:
    # svcadm refresh svc:/network/isns_server 
How to Specify the Data Store Location

The default location and name for the file that contains the client data is /etc/isns/isnsdata.xml If you have a complex network environment that includes one or more backup iSNS servers, the data store must reside in a common location so that all servers can use it. Use the data_store_location property to specify the new location. You can also change the name of the file.

  1. Use the “iSNS Server Management” RBAC profile to obtain the authorizations needed for managing the iSNS service.

    Roles contain authorizations and privileged commands. For more information about roles, see Configuring RBAC (Task Map) in System Administration Guide: Security Services.

  2. Use the svccfg command to change the location to, for example, /etc/isns2/isns_data.xml:
    svccfg -s svc:/network/isns_server setprop\config/data_store_location="/etc/isns2/isns_data.xml"
  3. If you change the data store location after the server has been enabled, you must restart the server:
    # svcadm restart svc:/network/isns_server 
How to Enable the iSNS Server Daemon
  1. Use the “iSNS Server Management” RBAC profile to obtain the authorizations needed for managing the iSNS service.

    Roles contain authorizations and privileged commands. For more information about roles, see Configuring RBAC (Task Map) in System Administration Guide: Security Services.

  2. Set the server to start each time the system boots:
    #svcadm -v enable svc:/network/isns_server
            svc:/network/isns_server:default enabled
  3. Verify the state of the iSNS service:
    #svcs svc:/network/isns_server:default
            STATE         STIME        FMRI
            online        11:50:04     svcs svc:/network/isns_server:default
How to Disable the iSNS Server Daemon
  1. Use the “iSNS Server Management” RBAC profile to obtain the authorizations needed for managing the iSNS service.

    Roles contain authorizations and privileged commands. For more information about roles, see Configuring RBAC (Task Map) in System Administration Guide: Security Services.

  2. Set the server to start each time the system boots:
    #svcadm -v disable svc:/network/isns_server
            svc:/network/isns_server:default disabled
  3. Verify the state of the iSNS service:
    #svcs svc:/network/isns_server:default
            STATE         STIME        FMRI
            disabled      11:51:05     svc:/network/isns_server:default

Using the Command Line Interface to Configure iSNS

This section provides the procedures for configuring the iSNS server using the command line interface. The following topics are discussed:

These procedures use the isnsadm(1M) command. See the man page for a complete description of all of the command options.

How to Display the Current Server Configuration
  • The following command shows the properties of the iSNS server:
    #isnsadm show-config
            Data Store Location: /etc/isns/isnsdata.xml
            Entity Status Inquiry Non-Response Threshold: 3
            Management SCN Enabled: yes
            Authorized Control Node Names: -
How to Enable the Default Discovery Domain Set
  1. Use the “iSNS Server Management” RBAC profile to obtain the authorizations needed for managing the iSNS service.

    Roles contain authorizations and privileged commands. For more information about roles, see Configuring RBAC (Task Map) in System Administration Guide: Security Services.

  2. Activate the default discovery domain set:
    #isnsadm enable-dd-set Default
How to Create the Discovery Domain Sets
  1. Use the “iSNS Server Management” RBAC profile to obtain the authorizations needed for managing the iSNS service.

    Roles contain authorizations and privileged commands. For more information about roles, see Configuring RBAC (Task Map) in System Administration Guide: Security Services.

  2. Create a discovery domain set:
    #isnsadm create-dd-set set_name
  3. Enable the discovery domain set:
    #isnsadm enable-dd-set set_name
  4. View all the discovery domain sets, including the new one:
    #isnsadm list-dd-set -v
            DD Set name: Default
                State: Enabled
            DD Set name:set_name
                State: Enabled

    The list of discovery domain sets includes the default discovery domain set as well as the new one.

How to Create the Discovery Domains

New discovery domains are members of the default discovery domain set. After you create them, you add them to the new discovery domain set.

  1. Use the “iSNS Server Management” RBAC profile to obtain the authorizations needed for managing the iSNS service.

    Roles contain authorizations and privileged commands. For more information about roles, see Configuring RBAC (Task Map) in System Administration Guide: Security Services.

  2. Create the discovery domain:
    #isnsadm create-dd domain_name
  3. View the new discovery domain in the Default discovery domain set:
    #isnsadm list-dd-set Default
             DD name: name
                 DD set(s): Default
  4. Create other discovery domains.
How to Add a Discovery Domain to a Discovery Domain Set

This task removes the discovery domain from the default discovery domain set and adds it the discovery domain set that you specify. Because the new discovery domain set has been enabled, all the clients in its discovery domains can be discovered by the iSNS server.

You do not need to have privileges to list the members of the discovery domains and discovery domain sets.

  1. Use the “iSNS Server Management” RBAC profile to obtain the authorizations needed for managing the iSNS service.

    Roles contain authorizations and privileged commands. For more information about roles, see Configuring RBAC (Task Map) in System Administration Guide: Security Services.

  2. List the discovery domains to identify the one you want to add.
    #isnsadm list-dd -v Default
  3. List the discovery domain sets to identify the one you want as the container for the new discovery domain.
    #isnsadm list-dd-set
  4. Move the discovery domain to the discovery domain set that you want:
    #isnsadm add-dd domain_name -s set_name
  5. View the new addition to the discovery domain set:
    #isnsadm list-dd-set -v domain_name
How to Assign Clients to a Discovery Domain
Before You Begin

Use the client's management interface to register the client. Using the iSCSI configuration function, specify the IP address of the iSNS server and allow discovery of the client by the iSNS server.

  1. Use the “iSNS Server Management” RBAC profile to obtain the authorizations needed for managing the iSNS service.

    Roles contain authorizations and privileged commands. For more information about roles, see Configuring RBAC (Task Map) in System Administration Guide: Security Services.

  2. Verify that the client has been registered with the iSNS server:
    #isnsadm list-node 
           iSCSI Name: iqn.1986-03.com.sun:01:000e0c9f10da.45173FEA.engr
              Alias: STK5320_NAS
              Type: Target
              .
           iSCSI Name: iqn.1986-03.com.sun:01:000e0c9f10da.454F00A2.acct
              Alias:
              Type: Initiator
             

    The output shows the clients' iSCSI names.

  3. Verify the name of the discovery domain:
    #isnsadm list-dd
  4. Add the client to the discovery domain:
    #isnsadm add-node -d domain_name iSCSI_Name

    For example, to add the target called “STK5320_NAS” to the Eng-dd discovery domain:

    #isnsadm add-node -d Eng-dd iqn.1986-03.com.sun:01:000e0c9f10da.454F00A2.engr
  5. List all the clients in the discovery domain to verify the client has been added:
    #isnsadm list-dd -v domain_name 
        

    For example, to check the Eng-dd discovery domain:

    #isnsadm list-dd -v Eng-dd
              DD name:    Eng-dd
              DD set: Development-dds
             iSCSI Name:    iqn.1986-03.com.sun:01:000e0c9f10da.45173FEA.engr
                iSCSI Name:    iqn.1986-03.com.sun:01:000e0c9f10da.454F00A2.acct
                iSCSI name: iqn.1986-03.com.sun:01:e00000000000.46fd8e2b
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