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Through Network Registrar's graphical user interface (GUI), ntwkreg, or command line interface (CLI), nrcmd, you control your servers' operations. The GUI consists of the following elements:
The commands handle administration and affect the way you can view Network Registrar activity. Commands are grouped in task-specific menus on the menu bar (Figure 4-1).
The Admin menu (Figure 4-2) contains commands that allow you to address the Network Registrar database, to specify system administrator information, and to exit Network Registrar.
Step 1 Select Admin>Clusters (Figure 4-2).
Step 2 In the Clusters dialog box, click Add Cluster.
Step 3 In the Add Cluster dialog box, enter the cluster name.
The cluster name must be the name of the host on which the database runs.
Step 4 If you want to connect the cluster at this time, select the Connect to this cluster check box.
Step 5 Click OK.
When you remove a cluster, Network Registrar no longer knows about the cluster and its name does not appear in the Server Manager.
Step 1 Select Admin>Clusters (Figure 4-2).
Step 2 In the Clusters dialog box, select the cluster you want to remove.
Step 3 Click Remove.
Step 4 Click Yes in the Network Registrar dialog box.
Step 5 Click Close to exit the Clusters dialog box.
After you have added a cluster to Network Registrar, you must connect it to be able to configure or administer the cluster.
Step 1 Select Admin>Clusters (Figure 4-2).
Step 2 In the Clusters dialog box, select the cluster you want to connect.
Step 3 Click Connect.
Step 4 Click Close.
If you try to connect to a cluster that is being used by someone else, Network Registrar warns you that the cluster is locked and tells you who is holding the lock. The format of the warning message is:
username@machine-name.process-id-number
in which username is the Network Registrar login username, machine-name is the name of the machine on which the Network Registrar GUI is running, and process-id-number identifies the unique process on machine-name in which that GUI is running. On Solaris, the machine-name may differ from the machine on which the GUI is being displayed; on Windows 95 or Windows NT, the GUI always runs and displays on the same machine (regardless of where the GUI executable resides).
If the cluster is being used by someone else, you should disconnect. If you want to connect to a locked cluster, you should contact the person who is currently connected and request that he or she disconnect.
You can override the lock, but you should do so only if you know that no one else is editing the cluster, for example, if the other system had crashed while the cluster was connected.
When you disconnect from a cluster it can no longer be configured or administered from that workstation.
Step 1 Select Admin>Clusters (Figure 4-2).
Step 2 In the Clusters dialog box, select the cluster you want to disconnect.
Step 3 Click Disconnect.
Step 4 Click Close to exit the Clusters dialog box.
To see whether a cluster is connected or not, you can view its state.
Step 1 Select Admin>Clusters (Figure 4-2).
Network Registrar displays the cluster's state.
Step 2 Click Close to exit the Cluster dialog box.
From the Admin command level you can add administrators, change passwords, and configure administrators for the cluster.
Step 1 Select Admin>Add Administrator (Figure 4-2).
Step 2 Enter the administrator's username.
You can choose any string for the administrator's name.
Step 3 Enter the administrator's password.
Step 4 Enter the password a second time.
Step 5 Select the clusters the administrator can access.
Step 6 Click Add.
Step 1 Select Admin>Change Administrator Password (Figure 4-2).
Step 2 Enter the administrator's username.
Step 3 Enter the administrator's current password.
Step 4 Enter the administrator's new password.
Step 5 Enter the new password a second time.
Step 6 Select the cluster the administrator can access.
Step 7 Click OK.
Exiting the Network Registrar user interface does not affect your network servers' or your hosts' ability to request leases or access the Internet.
To exit Network Registrar's user interface, Select Admin>Exit (Figure 4-2). If you have not saved configuration changes, Network Registrar prompts you to save changes.
The Servers menu (Figure 4-3) allows you to control the servers, to add servers to the Server Status Monitor (Figure 4-11), and to display server statistics.
Administration includes:
Step 1 From the Server Manager window (Figure 4-10), select the server you want to start.
Step 2 Select Servers>Start (Figure 4-3).
Step 3 Click OK.
Step 1 From the Server Manager window (Figure 4-10), select the server you want to stop.
Step 2 Select Servers>Stop (Figure 4-3).
Step 3 Click OK.
Step 1 From the Server Manager window (Figure 4-10), select the server you want to reload.
Step 2 Select Servers>Reload (Figure 4-3).
Step 3 Click OK.
Network Registrar stops the server you have selected, updates the database with the new configuration information, and restarts the server.
You can use the Server Status Monitor window (Figure 4-11) to view the state of your servers. For more information about the Server Status Monitor window, see the "Server Status Monitor" section later in this chapter.
Step 1 From the Server Manager window (Figure 4-10), select the server you want to add.
Step 2 Select Servers>Add to Status Monitor (Figure 4-3), or, from Windows 95 or Windows NT, drag the server icon to the Server Status Monitor window (Figure 4-11).
Step 1 In the Server Status Monitor window (Figure 4-11), select the server you want to remove.
Step 2 Use the right mouse button (right-click) to select Remove.
Step 1 From the Server Manager window (Figure 4-10), select the server whose statistics you want to view.
Step 2 Select Server>Show Statistics (Figure 4-3).
Network Registrar displays the Statistics window.
The View menu (Figure 4-4) governs viewing of the Network Registrar windows.
The View menu (Figure 4-4) contains the following commands:
The Window menu (Figure 4-5) lets you control the appearance and positioning of the Network Registrar windows.
The Window menu (Figure 4-5) contains the following commands:
The Help menu (Figure 4-6) contains the online help and the About Network Registrar box.
The toolbar (Figure 4-7) contains one-button shortcuts to the most frequently used commands.
The Show Properties toolbar button (Figure 4-7) lets you configure either a DNS server or zone or DHCP server or scope depending on the current selection.
The Control toolbar button (Figure 4-7) displays the Server's Control dialog box (Figure 4-8). From this dialog box you can view and change the server's state; for example, if the server is stopped, you can start it.
The Show Statistics toolbar button (Figure 4-7) displays the Statistics window (Figure 4-9). You can choose to sort the selected server's statistics by Name or by Value.
The Add toolbar button (Figure 4-7) lets you add clusters, DNS zones, or DHCP scopes, depending on what you have selected.
The Remove toolbar button (Figure 4-7) lets you remove cluster, DNS zones, or DHCP scopes from the Server Manager window (Figure 4-10), depending on what you have selected.
The Server Manager window (Figure 4-10) and the Server Status Monitor window (Figure 4-11) are the two main windows that you can use to configure and monitor Network Registrar.
The Server Manager window (Figure 4-10) is a standard Windows tree control that contains a list of clusters at its top-level node. Under each cluster, there are lists of servers. From each of these servers, there is a subtree that contains server-specific data structures. This display lets you select servers for browsing, configuration and control, or status information.
The Server Manager uses icons to indicate different Network Registrar components. Table 4-1 lists all the icons you will see in the Server Manager tree control.
| Icon | Description |
|---|---|
| List of clusters |
| Cluster |
| DNS server |
| DNS server that needs to be reloaded |
| DNS zone |
| DNS secondary zone |
| DHCP server |
| DHCP server that needs to be reloaded |
| DHCP scope |
The Server Status Monitor window (Figure 4-11) is a window in which you can place server icons in order to monitor their state. The icons change to reflect the server's current state. For instructions on adding or removing servers from the Server Status Monitor window, see the "Using the Server Status Monitor" section earlier in this chapter.
The following items can decrement the health of the servers:
The status bar (Figure 4-12) appears at the bottom of the window. It provides information about commands or actions. When you highlight a menu item, you will see a short description of its function in the status bar.
Posted: Thu Jul 13 11:34:38 PDT 2000
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