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Squid Proxy Server 3.1: Beginner's Guide

You're reading from   Squid Proxy Server 3.1: Beginner's Guide Reduce bandwidth use and deliver your most frequently requested web pages more quickly with Squid Proxy Server. This guide will introduce you to the fundamentals of the caching system and help you get the most from Squid.

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Product type Paperback
Published in Feb 2011
Publisher Packt
ISBN-13 9781849513906
Length 332 pages
Edition 1st Edition
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Table of Contents (20) Chapters Close

Squid Proxy Server 3.1 Beginner's Guide
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
1. Getting Started with Squid 2. Configuring Squid FREE CHAPTER 3. Running Squid 4. Getting Started with Squid's Powerful ACLs and Access Rules 5. Understanding Log Files and Log Formats 6. Managing Squid and Monitoring Traffic 7. Protecting your Squid Proxy Server with Authentication 8. Building a Hierarchy of Squid Caches 9. Squid in Reverse Proxy Mode 10. Squid in Intercept Mode 11. Writing URL Redirectors and Rewriters 12. Troubleshooting Squid Pop Quiz Answers Index

Time for action – customizing the access log with a new log format


Squid has a lot of information about every client request and reply, however it writes only the requested information to the log file, which we can customize by defining several log formats.

Now, let's define a log format in which the time will appear in a human-readable format and use it with access_log:

logformat minimal %tl %>a %Ss/%03>Hs %rm %ru
access_log daemon:/opt/squid/var/logs/access.log minimal

So, we have constructed a new log format that will log the information we are most interested in. Let's see a few log messages in the preceding format:

11/Sep/2010:23:52:33 +0530 127.0.0.1 TCP_MISS/200 GET http://en.wikipedia.org/wiki/Main_Page

11/Sep/2010:23:52:34 +0530 127.0.0.1 TCP_MISS/200 GET http://en.wikipedia.org/images/wikimedia-button.png

Now the time in the log messages is human-readable and we can therefore tell when a particular URL was accessed.

We should note that if we are using custom formats for access...

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