Specifications

Chapter 8: Working with Match Rules
132 Equalizer Installation and Administration Guide
14. Check disable to indicate that this rule should not be processed. (This check box is often used
to debug match rules, so that a match rule can be temporarily disabled during testing without
deleting its definition.)
15. Click the commit button to save your new Match Rule definition.
Modifying a Match Rule
To edit a match rule, follow these steps:
1. Log into the Equalizer Administration Interface in edit mode.
2. In the left frame, click the name of the match rule to be changed.
3. In the right frame, click menu > Edit Match Rule from the local menu. The modify match
rule screen opens in the right frame.
4. Make the desired changes to the match expression, using steps similar to those in the previous
section, “Creating a New Match Rule” on page 129.
5. Make the desired changed to the list of servers and flags.
6. To save your changes, click the commit button.
Removing a Match Rule
To delete a match rule, follow these steps:
1. Log into the Equalizer Administration Interface in edit mode.
2. In the left frame, click the name of the match rule to be deleted.
3. In the right frame, click Menu and select Delete This Match from the local menu.
4. Click OK to confirm that you want to permanently remove the match rule.
Match Functions
To build or edit a match expression, click part of the expression to edit its arguments or to select a
match function or logical expression from a dynamic drop-down list. The part of the expression that
you click on is highlighted and determines the contents of the dorp-down list. For instance, if the
current selection is a match function, the arguments to the function are displayed so you can edit
them, along with a list of items that can replace the function.
In the Administration Interface, logical operators and constructs are introduced using special entries
in the drop-down list for expressions. These allow you to build complex boolean expressions in
match rules. See the section “Logical Operators and Constructs in the GUI” on page 138.
The combination of match functions and logical operators provides a great deal of control over
request processing based on the contents of the request’s HTTP headers and the destination URI of
the request.
The following table lists the non-URI functions supported by Equalizer match rules: