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Implementing Splunk 7, Third Edition

You're reading from   Implementing Splunk 7, Third Edition Effective operational intelligence to transform machine-generated data into valuable business insight

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Product type Paperback
Published in Mar 2018
Publisher Packt
ISBN-13 9781788836289
Length 576 pages
Edition 3rd Edition
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Author (1):
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James D. Miller James D. Miller
Author Profile Icon James D. Miller
James D. Miller
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Table of Contents (15) Chapters Close

Preface 1. The Splunk Interface FREE CHAPTER 2. Understanding Search 3. Tables, Charts, and Fields 4. Data Models and Pivots 5. Simple XML Dashboards 6. Advanced Search Examples 7. Extending Search 8. Working with Apps 9. Building Advanced Dashboards 10. Summary Indexes and CSV Files 11. Configuring Splunk 12. Advanced Deployments 13. Extending Splunk 14. Machine Learning Toolkit

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...

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