HP OpenVMS Systems Documentation

HP Availability Manager User's Guide

This page (Figure 6-24) allows you to turn checksumming on or off for the virtual circuit.

Figure 6-24 LAN VC Checksumming Page

6.4.3.4 LAN VC Compression Fix

Figure 6-25 LAN VC Compression Page

6.4.4 LAN Channel Fixes

• Channel Details...
• LAN Device Details...
• Fixes...

Click the Fixes... menu item to display this list of available fixes:

• Adjust Priority
• Hops
• Maximum Packet Size

These fixes are described in the following sections.

6.4.4.1 LAN Path Adjust Priority Fix

This page (Figure 6-26) allows you to change the cost associated with this channel. This, in turn, affects the routing of cluster traffic.

Figure 6-26 LAN Path Adjust Priority Page

6.4.4.2 LAN Path Hops Fix

Figure 6-27 LAN Path Hops Page

6.4.4.3 LAN Path Maximum Packet Size Fix

Figure 6-28 LAN Path Maximum Packet Size Page

6.4.5 LAN Device Fixes

• Channel Details...
• LAN Device Details...
• Fixes...

Select the LAN Device Details menu item to display the LAN Device Details window. From the Devicer Details window, select Fix... from the Fix menu. The Availability Manager displays the first of several pages, each of which contains a fix option:

Adjust Priority
Set Max Buffer Size
Start Device
Stop Device

These fixes are described in the following sections.

6.4.5.1 LAN Device Adjust Priority Fix

This page (Figure 6-29) allows you to adjust the management priority for the device. This fix changes the cost associated with this device. This, in turn, affects the routing of cluster traffic.

Figure 6-29 LAN Device Adjust Priority Page

6.4.5.2 LAN Device Set Maximum Buffer Fix

Figure 6-30 LAN Device Set Maximum Buffer Size Page

6.4.5.3 LAN Device Start Fix

Figure 6-31 LAN Device Start Page

6.4.5.4 LAN Device Stop Fix

Figure 6-32 LAN Device Stop Page

This chapter explains how to customize the following Availability Manager features:

In addition, you can change the group membership of nodes as explained in Section 7.3.

Table 7-1 shows the levels of customization the Availability Manager provides. At each level, you can customize specific features. The table shows which features can be customized at which levels.

You can customize each feature at one or more of the following levels, as shown in Table 7-1:

1. A.M. Default
2. Application
3. Operating System
4. Group
5. Node

The Availability Manager (A.M.) Default level consists of values that are preset within the Availability Manager. Any customization overrides A.M. Default values. For example, customizing values for filters at the Group level overrides values for filters at the Operating System level. Similarly, customizing values for filters at the Node level overrides values for filters at the Group level. The Application level is unique because it is the only level at which you can select or change the nodes or groups of nodes you want to display.

To return to the values set at the preceding level, you can click the Use default values button at the top of the customization page.

Examples of Setting Levels of Customization

If you monitor several groups but the password for the nodes in one of those groups is different from the password of nodes in other groups, right-click the group you want to change, choose Customize from the popup menu, click the Security tab, and change the password. This new password is then used for each node that is a member of that group.

As a second example, to change the password of one node in a group to a different password than the other nodes in the group, right-click that node, choose Customize, click the Security tab, and change the password to one that differs from the other nodes in the group. For that node, the new password overrides the group password.

The Availability Manager keeps track of the next higher level of a particular setting. This means that you can reset a value to that of the next higher level. In the second password example, if you want to set the password for the single node back to the password that the rest of the group uses, simply click the Use default value button. The password value for the node now comes from the group-level password setting. At this point, if you change the group password, all the nodes in the group have the new password.

Understanding the Terms "Use Default Value" and "System Default"

The Use default value button and the "system default" setting are not necessarily the same value. A system default is a value stored in the Availability Manager and is a value that is used until a user overrides it. Clicking the Use default value button sets a value to conform to the value set at the next higher level of customization.

If you want to override the system default for all OpenVMS nodes, click the Customize button on the main menu bar, and choose Customize OpenVMS. Whatever changes you make subsequently are set for all OpenVMS nodes except those nodes on which a particular parameter has been set at the group or node level.

A two-line status box at the bottom of the Customization page tells you the level at which the selected parameter will be configured and what level the value will come from if you press the Use default value button. In this way, you can tell what level of customization you are overriding when you make changes.

In the main Application window (see Figure 1-1), you can select the levels of customization that are shown in Table 7-1. The following sections explain these levels.

7.1.1 Application and Operating System Customization Levels

In the Application window menu bar, click the Customize menu. The Availability Manager displays the popup menu shown in Figure 7-1.

Figure 7-1 Application and Operating System Customization Menu

Notice that you have a choice of two levels of customization: application and operating system levels. The operation system level has two choices: Windows NT and OpenVMS. The following sections describe these choices.

7.1.1.1 Application Customization

When you choose Customize Application, the Availability Manager displays the page shown in Figure 7-2, where you can select groups of nodes or individual nodes to be displayed. Section 7.2 explains how to do this.

Figure 7-2 Application Customization Page

When you choose Customize Windows NT, the Availability Manager displays the page shown in Figure 7-3.

Figure 7-3 Windows Operating System Customization Page

The default page displayed is the Events Customization page. Instructions for using this page are in Section 7.6.1. The other tab displayed is the Security Customization page, which is explained in Section 7.7.1.2.

7.1.1.3 OpenVMS Operating System Customization

When you choose Customize OpenVMS, the Availability Manager displays the page shown in Figure 7-4, which contains tabs for the last five types of customizations listed in Table 7-1.

Figure 7-4 OpenVMS Operating System Customization Page

To perform customizations at the group level, right-click a group name in the Application window. The Availability Manager displays a small menu similar to the one shown in Figure 7-5.

Figure 7-5 Group Customization Menu

When you choose Customize, the Availability Manager displays the page shown in Figure 7-4.

7.1.3 Node Customization Level

To customize a specific node, right-click a node name in the Node pane of the Application window (see Figure 1-1). The Availability Manager displays the popup menu shown in Figure 7-6.

Figure 7-6 Node Customization Menu

When you choose Customize, the Availability Manager displays a customization page similar to the one shown in Figure 7-4.

Number of Nodes Affected by Customization

Depending on which customization menu you use and your choice of menu items, your customizations can affect one or more nodes, as indicated in the following table.

When you choose Customize Application on the Application window Customize menu (Figure 7-1), the Availability Manager displays a Group/Node Lists tab (Figure 7-7).

Figure 7-7 Group/Node Customization Page

You have the following choices:

• Check Use Group List.
  First check the box preceding Use Group List. Then, using the correct case, enter the names of the groups of nodes you want to monitor.
• Check Use Node List.
  First check the box preceding Use Node List. Then enter the names of individual nodes you want to monitor. (The names are case-sensitive, so be sure to enter the correct case.)
• Check both boxes.
  If you check both boxes, you can enter the names of groups of nodes and also individual nodes you want to monitor. (If you enter the name of an individual node, the Availability Manager displays the name of the group that node is in, but only one node in that group.)
• Check neither box.
  Do not enter any groups or nodes; all groups and all nodes will be monitored.

If you decide to return to the default (Use Group List: DECAMDS) or to enter names again, click Use default values.

After you enter a list of nodes or groups of nodes, click one of the following buttons at the bottom of the page:

To put the list into effect, exit the Availability Manager and restart it.

7.3 Changing the Group Membership of a Node

Each Availability Manager Data Collector node is assigned to the DECAMDS group by default. The following sections explain how to change the group membership of nodes.

You need to edit a logical on each Data Collector node to change the group for that node. To do this, follow these steps:

1. Assign a unique name of up to 15 alphanumeric characters to the AMDS$GROUP_NAME logical name in the AMDS$AM_SYSTEM:AMDS$AM_LOGICALS.COM file. For example:

   $ AMDS$DEF AMDS$GROUP_NAME FINANCE ! Group FINANCE; OpenVMS Cluster alias

2. Apply the logical name by restarting the Data Collector:

   $ @SYS$STARTUP:AMDS$AM_STARTUP RESTART

You need to edit the Registry to change the group of a Windows node. To edit the Registry, follow these steps:

1. Click the Windows Start button. On the menu displayed, first click Programs, then Accessories, and then Command Prompt.
2. Type REGEDIT after the angle prompt (>).
   The system displays a screen for the Registry Editor, with a list of entries under My Computer.
3. On the list displayed, expand th HKEY_LOCAL_MACHINE entry.
4. Double-click SYSTEM.
5. Click CurrentControlSet.
6. Click Services.
7. Click damdrvr.
8. Click Parameters.
9. Double-click Group Name. Then type a new group name of 15 alphanumeric characters or fewer, and click OK to make the change.
10. On the Control Panel, click Services, and then click Stop for "PerfServ."
11. Again on the Control Panel, click Devices, and then click Stop for "damdrvr."
12. First restart damdrvr under "Devices," and then restart PerfServ under "Services."
    This step completes the change of groups for this node.