< Previous  | TOC | Index | Next  >

Administering service groups in multiple clusters

Tasks for collectively administering service groups that are members of multiple clusters are available when you are viewing the following:

• All service groups that are configured under all management servers
• All service groups that are configured under a single management server

These tasks include:

• Edit attributes
• Edit tags
• Online anywhere
• Offline anywhere
• Clear fault
• Freeze
• Unfreeze
• Assign maintenance windows
• Clear all maintenance windows

  Note   Service group icons change in appearance when the states of the objects that they represent are manipulated. For example, if you freeze a service group, the corresponding icon changes to reflect the new state.

See Icon conventions.

Editing attributes of selected service groups

The Edit attributes task in either the Home:Groups or the Management Server:Groups view enables you to edit attributes on selected service groups in a one-to-many fashion (one command modifies many service groups).

 To edit attributes

1. In either the Home:Groups or Management Server:Groups view, in the Groups Listing table, do one of the following:
   • To edit the attributes of one or more service groups, check the check box next to each service group that you want.
   • To edit the attributes of all service groups, check the check box at the top of the table.
2. In the Configuration task panel, click Edit Attributes.
3. In the Edit Attribute dialog box, specify the following attribute details and then click OK:
   • The attribute name

     Select the attribute you want to edit from the Attribute Name drop-down menu.

   • The attribute value

     In the Values box, either click a value to change the it, or click the + (plus) button to add a value. Click a value and then click the - (minus) button to remove a value.

     You can enter more than one value for some attributes. Use the up- and down-arrow buttons to scroll among multiple values.

   • The systems on which to change the attribute

     Specify a setting for the Apply value to option. Apply to all nodes applies the changes to all systems listed the System List, which lists all systems on which the attribute is configured. Apply to selected nodes enables you to select nodes from the System List.

Editing tags of selected service groups

The Edit Tags task in either the Home:Groups or the Management Server:Groups view enables you to edit tags on selected service groups in a one-to-many fashion (one command modifies many service groups).

  Note   You must be a management server administrator on the current management server to edit tags.

 To edit tags

1. In either the Home:Groups or the Management Server:Groups view, in the Groups Listing table, do one of the following:
   • To edit the tags of one or more service groups, check the check box next to each service group that you want.
   • To edit the tags of all service groups, check the check box at the top of the table.
2. In the Configuration task panel, click Edit Tags.
3. In the Edit Tags dialog box, select the tag you want to modify in the Tag name drop-down menu.
4. Enter the new value for the tag into the Values box. You can also enter an optional description into the Description box.
5. Click OK.

Freezing and unfreezing service groups

The Freeze task in either the Home:Groups or the Management Server:Groups view enables you to place a service group into a state in which it is active, but not monitored, not able to change state, and not able to fail over to another system. Freezing is useful for performing maintenance tasks on a service group.

For example, you may want to freeze a service group if you want to stop VCS (specifically, HAD), but do not want the service group and the corresponding applications to fail over to another cluster node.

During the time that a service group is frozen, it is running, but not highly available. Do not unfreeze a service group until VCS has been restarted.

 To freeze or unfreeze selected groups

1. In either the Home:Groups, Management Server:Groups, or Cluster:Groups view, in the Groups Listing table, do one of the following:
   • To freeze or unfreeze one or more service groups, check the check box next to each service group that you want.
   • To to freeze or unfreeze all service groups, check the check box at the top of the table.
2. In the Operations task panel, click Freeze or Unfreeze.

   ---

     Note   When you freeze the selected service groups, a red padlock is added to the status icon for each service group. When you subsequently unfreeze them, the padlock is removed.

   ---

 To freeze or unfreeze a group using the command line

• # gagrp -freeze grp -persistent
• # gagrp -unfreeze grp -temporary

Assigning and unassigning maintenance windows

You can schedule intervals of time to perform maintenance on service groups. These intervals are called maintenance windows. During a maintenance window, the service group is failed over to another system. The service group is switched back to the original system after the window expires.

You can assign maintenance windows only to service groups. You must first create a maintenance window before you can assign it to a service group.

See "Creating and deleting maintenance windows" on page 133.

 To assign a maintenance window to a service group

1. In the Home:Groups, Management Server:Groups, or Cluster:Groups view, in the Groups Listing table, click a linked service group name.
2. In the Group:Summary view, in the Operations task panel, click
   Assign/Unassign Maintenance Window.
3. In the Add or Remove Maintenance Windows dialog box, click Select an existing maintenance window.
4. In the Available list, check the check box next to the maintenance window that you want to assign to the currently-selected service group.

   You may select more than one available maintenance window.

5. Click the right-arrow button.

   This action moves the selected maintenance window to the Assigned list.

6. Click OK.

 To unassign a maintenance window from a service group

1. In the Home:Groups, Management Server:Groups, or Cluster:Groups view, in the Clusters Listing table, click a linked service group name.
2. In the Group:Summary view, in the Operations task panel, click
   Assign/Unassign Maintenance Window.
3. In the Add or Remove Maintenance Windows dialog box, click Select an existing maintenance window.
4. In the Assigned list, check the check box next to the maintenance window that you want to delete from the currently-selected service group.

   You may select more than one assigned maintenance window.

5. Click the left-arrow button.

   This action moves the selected maintenance window to the Available list.

6. Click OK.

Online anywhere and offline anywhere

Manually put a service group into a responsive, functioning state, or into an unresponsive, non-functioning state. You must have the role of cluster administrator or service group administrator to bring a service group online or to take one offline.

You can bring a service group online on a specific system, or you can bring the service group online "anywhere." If you select the Anywhere option, the service group is brought online on the first available system in the cluster.

Likewise, you can take a service group offline on a specific system, or you can take the service group offline anywhere. If you select the Anywhere option, the service group is taken offline on the first system in the cluster on which it is found.

 To bring a service group online or take it offline anywhere

1. In either the Home:Groups, Management Server:Groups, or Cluster:Groups view, in the Groups Listing table, do one of the following:
   • To bring one or more service groups online anywhere, check the check box next to each service group that you want.
   • To take one or more service groups offline anywhere, select the chick box next to each service group that you want.
   • To bring all service groups online anywhere, check the check box at the top of the table.
   • To take all service groups offline anywhere, check the check box at the top of the table.
2. In the Operations task panel, select Online anywhere or Offline anywhere.

   The candidate systems are members of the system list for each service group. Both of these tasks try each system in a system list until every service group is successfully brought online or taken offline.

3. When prompted to confirm that you want to continue, click OK.