iTP Secure WebServer System Administrator's Guide (Version 7.0)

Configuring the iTP Secure WebServer
iTP Secure WebServer System Administrator’s Guide—523346-012
7-23
Managing Log Files
Managing Log Files
This section describes how to manage your log files including:
•
Choosing a Log Format
•
Planning Space for Logs on page 7-24
•
Rotating Log Files on page 7-24
Choosing a Log Format
You can choose between three formats for your server log files:
•
Common Log Format (CLF)
•
Combined Log Format
•
Extended Log Format (ELF)
Common Log Format (CLF)
The common log format (CLF) is used by the access and error log files and is specified
by the AccessLog and ErrorLog configuration directives (see Appendix A,
Configuration Directives). This format is supported by other Web servers and by many
log-analysis tools. If you already are using or have such tools, you might want to use
CLF.
Combined Log Format
The information logged into the access log as per the Common Log Format is devoid
of the 'Referer' and the 'User-Agent' fields. The users can specify the configuration
directive CombinedLogFormat if they want to log these two additional fields in to the
access log file. For information on using this configuration directive, see
CombinedLogFormat
on page A-17.
Extended Log Format (ELF)
The extended log format (ELF) is used by the extended log file and is specified by the
ExtendedLog configuration directive (see ExtendedLog on page A-20). ELF
implements several features not available with CLF including:
•
All error and access information for a particular request is recorded in a single log
entry. This integration of information eliminates the need to correlate entries in the
error log with separate entries in the access log.
•
Fields are provided for the Web-browser software type, the referrer, and the
request begin and end times.
Note. The CombinedLogFormat directive is available on systems running J06.04 and later J-
series RVUs and H06.15 and later H-series RVUs.