Book Image

Troubleshooting NetScaler

By : Raghu Varma Tirumalaraju
Book Image

Troubleshooting NetScaler

By: Raghu Varma Tirumalaraju

Overview of this book

NetScaler is a high performance Application Delivery Controller (ADC). Making the most of it requires knowledge that straddles the application and networking worlds. As an ADC owner you will also likely be the first person to be solicited when your business applications fail. You will need to be quick in identifying if the problem is with the application, the server, the network, or NetScaler itself. This book provides you with the vital troubleshooting knowledge needed to act fast when issues happen. It gives you a thorough understanding of the NetScaler layout, how it integrates with the network, and what issues to expect when working with the traffic management, authentication, NetScaler Gateway and application firewall features. We will also look at what information to seek out in the logs, how to use tracing, and explore utilities that exist on NetScaler to help you find the root cause of your issues.
Table of Contents (17 chapters)
Troubleshooting NetScaler
Credits
Notice
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Dashboard and Reporting tabs


NetScaler provides a couple of very useful GUI utilities in the Dashboard and the Reporting tabs. The Dashboard tab allows you to get a quick glance of the vital parameters of the NetScaler, such as what the current CPU and memory levels are.

Dashboard also provides you with a number of built-in graphs that allow you to plot traffic and connection characteristics. A popular example is the client versus server connections. The following screenshot shows equal numbers, a sign that there is not a lot of connection multiplexing happening:

Another useful purpose that the Dashboard serves is as an event viewer. The Event logs available here help you catch ongoing issues more easily due to the red color coding. You can in addition search for specific text patterns, for example, DOWN to zero in on problematic entries.

The Reporting tab provides historical reporting by extracting data from newnslogs. A very handy functionality here is the ability to create custom reports...