Rolling Event Log Files; Rolled Log File Name Format - HP P4535A - Web Cache Server Appliance Administrator's Manual

Chapter 12
The following table describes the command-line options:
Option
-o output_file
-a
-S
-C
-E
-2
NOTE
If no input files are specified,
file, writes to the standard output (
logcat
For example, to convert a binary log file to an ASCII file, you can use the
the following options:
logcat binary_file > ascii_file
logcat -o ascii_file binary_file
The binary log file is not modified by this command.

Rolling event log files

Traffic Server provides automatic log file rolling. This means that at specific intervals during the day, Traffic
Server closes its current set of log files and opens new log files.
Log file rolling offers the following benefits:
It defines an interval over which log analysis can be performed
It keeps any single log file from becoming too large and assists in keeping the logging system within the
specified space limits
It provides an easy way to identify files that are no longer being used so that an automated script can clean
the logging directory and run log analysis programs
You should roll log files several times a day. Rolling every 6 hours is a good guideline to follow.

Rolled log file name format

Traffic Server provides a consistent name format for rolled log files that allows you to easily identify log files.
When Traffic Server rolls a log file, it saves and closes the old file and starts a new file. The old file is renamed
to include:
The hostname of the Traffic Server that generated the log file
Two time stamps separated by a hyphen (
contained in the rolled log file
Description
Specifies where the command output is directed.
Automatically generates the output file name based on the input file name. If the input
is from stdin, this option is ignored.
For example:
logcat -a squid-1.blog squid-2.blog squid-3.blog
generates
squid-1.log, squid-2.log, squid-3.log
Attempts to transform the input to Squid format, if possible.
Attempts to transform the input to Netscape Common format, if possible.
Attempts to transform the input to Netscape Extended format, if possible.
Attempt to transform the input to Netscape Extended-2 format, if possible.
Use only one of the following options at any given time: -S, -C, -E, or -2.
reads from the standard input (
logcat
stdout
) that represent the earliest and latest time stamps for the entries
-
). If you do not specify an output
stdin
).
logcat
Working with Log Files
command with either of
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