Coyote Point Systems E350GX, Руководство по установке и администрированию

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Chapter 6: Administering Virtual Clusters
168 Equalizer Installation and Administration Guide
2. A confirmation dialog is displayed. Click
delete
to delete the Smart Event.
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
Smart Events
tab, and then click on the
Edit
icon in the
Action
column of the table.
2. Open the
Reporting
tab. The following statistics are displayed:
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
trigger
and
action
for this event.
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
variable
button (used
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
accept
to save the value, which now appears in the edit box.
• 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
X
menu item to remove the selected element from the expression.
When your expression is complete, click the
commit
button to save the expression.
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.)
number of times this event was processed
A Smart Event is processed, by default, every 15
seconds (see the
event interval
parameter under
“Global Probe Parameters” on page 85).
number of times this event was fired
The number of times a Smart Event’s trigger
expression evaluated to
true .
number of times this event was blocked
The number of times a Smart Event was blocked
by an
event_wait( )
function call.
Edit
icon