January 2013
Beginner to intermediate
448 pages
9h 16m
English
book
Implementing Splunk: Big Data Reporting and Development for Operational Intelligence
by VINCENT BUMGARNER
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Working with fields
All of the fields we have used so far were either indexed fields (such as host, sourcetype, and _time) or fields that were automatically extracted from key=value pairs. Unfortunately, most logs don't follow this format, especially for the first few values in each event. New fields can be created either inline, by using commands, or through configuration.
A regular expression primer
Most of the ways to create new fields in Splunk involve regular expressions. There are many books and sites dedicated to regular expressions, so we will only touch upon the subject here.
Given the log snippet ip=1.2.3.4, let's pull out the subnet (1.2.3) into a new field called subnet. The simplest pattern would be the literal string:
ip=(?P<subnet>1.2.3).4 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.