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Chapter 6: Administering Virtual Clusters
2.
A confirmation dialog is displayed. Click
Displaying Smart Event Statistics
1.
To display statistics for a Smart Event, do one of the following:
•
Click on the Smart Event name in the left frame. (Use the expand control (plus sign) next to a cluster name
to see all the Smart Events defined for the cluster).
•
Click the cluster name in the left frame, open the
column of the table.
Action
2.
Open the
tab. The following statistics are displayed:
Reporting
number of times this event was processed
number of times this event was fired
number of times this event was blocked
Using the Smart Event Expression Editor
Smart Control Events can be entered using a graphical editor in the Equalizer GUI. When a new event is created,
you must enter a unique name for the event on the first wizard screen (a name is defaulted for you if you would not
like to enter your own). The following two screens allow you to enter a
The Expression Editor lets you choose the elements of a trigger or action expression from a menu displayed at the
top of the editor screen, and manipulate them easily with the mouse. To use the editor:
•
Click the button with the name of a function, variable, or operator. See Figure 31 and Figure 33 on page
165 for a list of the expression elements supported.
•
The name of the function or variable appears in the edit box below; if you chose the
to enter data values), a blank element appears.
•
If the function you chose requires a parameter, click the down arrow next to the function name in the edit
box to supply the argument. Click
•
Click on an expression element in the edit box and then click an element in the menu to add the menu
element to the expression after the element selected in the edit box.
•
Click on an element and hold the mouse button to drag the selected element to a new position in the
expression; release the mouse button to drop the element into its new position.
•
Click on an element and select the
When your expression is complete, click the
Smart Event Examples
Several examples of Smart Events are presented in this section, using functions that are available to all clusters. (For
examples of Smart Events the use Equalizer VLB-only functions, see the section "Smart Control Event Examples
Using VLB" on page 299.)
168
to delete the Smart Event.
delete
Smart Events
A Smart Event is processed, by default, every 15
seconds (see the event interval parameter under
"Global Probe Parameters" on page 85).
The number of times a Smart Event's trigger
expression evaluated to true.
The number of times a Smart Event was blocked
by an event_wait( ) function call.
to save the value, which now appears in the edit box.
accept
menu item to remove the selected element from the expression.
X
button to save the expression.
commit
tab, and then click on the
and
for this event.
trigger
action
variable
Equalizer Installation and Administration Guide
icon in the
Edit
Edit
icon
button (used
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