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Foglight APM for Real User Experience 5.9.9 - Administration and Configuration Guide

Getting started Configuring traffic capture
Managing Sniffers Managing Archivers Managing capture groups Managing sessionizing policies Managing monitored ports Managing monitored IP addresses Managing monitored subnets Managing identifiers for virtual addressing schemes Managing private keys Managing web services and SOAP operations
Configuring traffic analysis Configuring analyzers Capturing traffic outside the network Configuring advanced options Integrating Foglight APM with other products Maintaining and troubleshooting Appendix: Building regular expressions in Foglight Appendix: Traffic analysis processing
Understanding the traffic analysis workflow Stage 1: Run hit analysis Stage 2: Run sequence analysis Stage 3: Finalize stopped sequences Stage 4: Finalize the session Example of interdependent analyzers Online-Only Topics
Removing items from a table Defining extraction expressions Adding, copying, and editing archivers Testing archivers Configuring archiver database shard settings Adding, copying, and editing sniffers Testing sniffers Adding and editing capture groups Testing capture groups Adding and copying sessionizing policies Editing sessionizing policies Selecting session identifiers from a discovery list Adding and editing session identifier variables Organizing session identifiers Selecting user name variables from a discovery list Adding and editing username rules Selecting URL prefixes from a discovery list Adding or adding URL prefixes Selecting ports from a discovery list Adding or editing monitored ports Selecting IP addresses from a discovery list Adding or editing monitored IP addresses Looking up host names for all monitored IP addresses Associating private keys with IP addresses Selecting subnets from a discovery list Adding and editing monitored subnets Adding identifiers Editing identifiers Finding IP addresses in HTTP headers Configuring a custom HTTP header using Microsoft IIS Manager Adding and editing local private keys Adding and editing HSM private keys Exporting keys using Microsoft Management Console Adding or editing web services Importing WSDL files to define web services Managing custom fields and metrics Adding, copying, and editing custom fields Removing custom fields Editing custom metrics Removing custom metrics Managing sensitive data Adding, copying, and editing sensitive hit detail policies Adding, copying, and editing sensitive content expression policies Modifying members of pivot categories Selecting aliases from a discovery list Adding, copying, and editing domain rules Adding, copying, and editing large hit details Adding, copying, and editing URL classifiers Reviewing rules for browser category, browser, and operating system hit details Adding user-defined user agent rules Adding and editing additional parsed response types Adding and editing captured request body types Adding, copying, and editing scripts Removing scripts Referencing configuration objects in a script Testing regular expressions Syntax for test data Adding simple hit analyzers using the Setup Wizard Adding simple sequence analyzers using the Setup Wizard Adding analyzers Copying analyzers Editing analyzers Adding and editing conditions Creating a simple Boolean expression Creating a complex Boolean expression Disabling standard metrics generated by a hit analyzer Adding custom metrics Editing custom metrics Selecting pivot categories Breaking out metrics into dynamically-named topology objects Publishing metric timeslices for the Geographical Perspectives dashboard Changing SLA thresholds Adding custom field updates Editing custom field updates Adding scripts to an analyzer Editing scripts Creating new scripts on the fly Adding hit storage restrictions Editing hit storage restrictions Adding sequence events Editing sequence events Adding static page elements Editing static page elements Viewing resource files defined by static page elements Adding and editing subnet filters Exporting configurations Exporting encrypted configurations Restoring a previous configuration Importing saved configurations Importing hit analysis configurations from Foglight Experience Viewer Using the Import Configuration Wizard

Where can I find regular expressions?

Regular expressions can be found in many parts of Foglight. For example, credential mappings use the regular expression syntax to select the hosts accessible with a specific credential.
Figure 110. Edit Resource Mapping Condition dialog box
The Excluded Drives property of the WindowsAgent is another example of a regular expression usage in Foglight.
Figure 111. Agent Properties dialog box
In addition, regular expressions can be found in LogFilter expressions, FxV Hit Analysis, and other parts of Foglight.

Regular expression basics

The simplest regular expression is a basic text string containing only alphanumeric characters. For example, Host1, matches the same value, Host1.
Figure 112. Example of a simple regular expression
A regular expression is fundamentally different from a pattern using file name wild cards such as an asterisk ‘*’ or a question mark ‘?’. For example, issuing a search in Windows Explorer using *.jpg as a filter matches all files with the .jpg extension.
Figure 113. Searches using Windows Explorer
This is not a regular expression, it is a simple filter that uses wild cards. An equivalent regular expression that selects all files with the .jpg extension is .*\\.jpg. The details of this regular expression are covered next:
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Building a simple pattern
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Building a pattern that matches a specific character
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Building a pattern that matches multiple characters
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Using advanced quantifiers
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Using special characters and regular expression flags
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Grouping elements in a pattern
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Additional information

Building a simple pattern

In this section we look at a simple regular expression pattern that selects all hosts whose names start with Host. The completed expression is Host.*. This expression contains two special characters:
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A period ‘.’. This is a special matching symbol that matches any single character.
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An asterisk ‘*’. This is a quantifier that instructs the regular expression interpreter to match the previous pattern zero or more times.
The final expression, Host.*, results in matching any strings that start with Host and match any of the following host names:
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Host01
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Host-test
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Host
However, the following host names do not match this expression:
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MyTestHost1
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ProductionHst-9000
We now take a look at a simple pattern that matches a group of similar text strings. A common pattern for selecting Windows® drive names is C:.*. A typical usage of this expression is in the Excluded Drives property of the WindowsAgent.
Figure 114. Building a simple pattern
Unlike in a simple file matching filter, C:*, the equivalent regular expression requires a period between the colon ‘:’ and the asterisk ‘*’, as in C:.*.
 
* 
CAUTION: Failing to include a period in this particular example can result in data loss.
Next, we build a regular expression that selects all hosts whose name include the string Host, not just the ones that start with Host. To do that, simply add a prefix to the above expression, Host.*, resulting in .*Host.*.
This expression matches any hosts that include Host, but not necessarily begin with it. That is because the prefix .* translates to any combination of zero or more characters appearing before the string Host. The expression matches each of the following host names:
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HostProd01
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Host-test
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Host
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MyHost
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DBHost-9000, but not DBHst-9000

Building a pattern that matches a specific character

A regular expression pattern can be used to match a string that includes a specific character. For example, you can build a pattern that matches only the drive letters C through H. To do this, you have two options:
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Specify the entire set of valid choices enclosed in square brackets: [CDEFGH]
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Specify a range using the first and last character only: [C-H]
Choosing the second option, the resulting regular expression is: [C-H]:.*. This means, any letter in the range and including ‘C’ through ‘H’, followed by a colon ‘:’, and optionally by more characters.
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