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Implementing Splunk 7, Third Edition - Third Edition

You're reading from  Implementing Splunk 7, Third Edition - Third Edition

Product type Book
Published in Mar 2018
Publisher Packt
ISBN-13 9781788836289
Pages 576 pages
Edition 3rd Edition
Languages

Table of Contents (19) Chapters

Title Page
Packt Upsell
Contributors
Preface
The Splunk Interface Understanding Search Tables, Charts, and Fields Data Models and Pivots Simple XML Dashboards Advanced Search Examples Extending Search Working with Apps Building Advanced Dashboards Summary Indexes and CSV Files Configuring Splunk Advanced Deployments Extending Splunk Machine Learning Toolkit Index

Using top to show common field values


A very common question that may often arise is: "Which values are the most common?" When looking for errors, you are probably interested in figuring out what piece of code has the most errors. The top command provides a very simple way to answer this question.

Let's step through a few examples.

First, run a search for errors:

sourcetype="tm1" error

The preceding example searches for the word error in all source types starting with the character string "tm1*" (with the asterisk being the wildcard character).

In my data, it finds events containing the word error, a sample of which is listed in the following screenshot:

Since I happen to know that the data I am searching is made up of application log files generated throughout the year, it might be interesting to see the month that had the most errors logged. To do that, we can simply add | top date_month to our search, like so:

sourcetype="tm1*" error | top date_month 

The results are transformed by top into a...

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