February 2017
Intermediate to advanced
526 pages
10h 8m
English
Content preview from Mastering Elastic StackBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Logstash Configuration for Parsing Logs
In this section, we will explore how to use Logstash to parse a file that contains different types of logs. It will utilize the knowledge gained in this chapter, which will be put into action. We will use custom created grok patterns to parse the data, as per our requirements.
Let's have a look at the data.
The log file contains millions of records with a combination of Tomcat logs and Catalina logs. The log file also contains application exceptions, errors, and stack trace messages. The log file contains log events of various log levels, such as INFO, WARN, ERROR, DEBUG, and FATAL.
Sample Catalina logs
Have a look at the following logs:
Mar 10, 2016 10:04:37 PM org.apache.catalina.startup.Catalina load INFO: ...
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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.