In today's world, every organization has at least one or two applications that run their entire business.
Accessing these applications becomes mission-critical if the organizations want to sustain their businesses. Any users to get their job done need access to these critical applications.
Citrix XenApp with its FlexCast technology offers a flexible solution to mobilize Windows applications with a highly secure delivery model.
As with a large number of applications nowadays, XenApp requires minimal configuration and installation decisions and an experienced administrator can configure an infrastructure in a matter of minutes or hours. Particularly because installation is a simple process, it is troubleshooting that sometimes becomes difficult. Troubleshooting is not a science, it's an art form; and behind every issue there is a cause, so you must plan for the situation.
With this book, we will cover troubleshooting preparation, general processes, and real-world examples to resolve any XenApp issue in a proper manner.
By the end of this book, you will have enough knowledge to maintain and optimize your own Citrix XenApp environment.
Chapter 1, Basic Troubleshooting Methodology, covers understanding problems, breaking down problems into their affected components, and finally, testing problems.
Chapter 2, Understanding the Citrix® Components, introduces you to the supportive components that are part of the XenApp infrastructure. It will describe the process of starting a published application and how each component comes into play.
Chapter 3, Troubleshooting XenApp® Issues, explains standard troubleshooting processes and how to follow them to troubleshoot complex XenApp issues in a mission-critical environment.
Chapter 4, Troubleshooting Other Issues, covers troubleshooting with provisioning services, NetScaler Gateway, Citrix Storefront, and other infrastructure components.
Chapter 5, Monitoring and Optimizing, explains using Citrix Director, EdgeSight, and NetScaler Insight Center to optimize XenApp infrastructure.
The following are the supported Windows operating systems:
Microsoft Windows Server 2012 R2
Microsoft Windows Server 2012
Microsoft Windows Server 2008 R2 with Service Pack 1
Microsoft Windows 8.1
Microsoft Windows 8
Microsoft Windows 7 with Service Pack 1
The following are the databases that can be used:
SQL Server 2014, Express, Standard, and Enterprise Editions
SQL Server 2012 SP1, Express, Standard, and Enterprise Editions
SQL Server 2008 R2 SP2, Express, Standard, Enterprise, and Datacenter Editions
The following are the frameworks that can be used:
Microsoft .NET Framework 4.5.1 (4.5.2 and 4.6 are also supported)
Microsoft .NET Framework 3.5 SP1 (Windows Server 2008 R2 and Windows 7 only)
Visual J# 2.0 SE
Microsoft Visual C++ 2005, 2008, 2010, and 2013 Runtimes
You will also need one hypervisor such as Citrix XenServer, Microsoft Hyper-V, and VMware vSphere to create virtual machines.
This book is for Citrix Administrators or Citrix Engineers, who are currently managing Citrix XenApp in the production environment and want to learn how to troubleshoot XenApp issues in the shortest time without missing a beat. It is assumed that readers have a basic understanding of XenApp components and how to implement and manage the XenApp infrastructure.
In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning.
Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "Delete the directory at C:\Program Files\Citrix\Receiver Storefront Directory."
A block of code is set as follows:
ODBC
\\ DRIVER= {SQL Native Client} \\ UID=administrator
\\ Trusted_Connection=Yes \\DATABASE =XA DS
\\ WSID=CTXXA02 \\ APP=Citrix IMA
\\ SERVER=CTXSQ02 \\ Failover_Partner=CTXSQ01
\\ Description=dsAny command-line input or output is written as follows:
dsmaint config /user: ABCnetwork\administrator /pwd:Passw0rd101 /dsn:"C:\Program Files (x86)\Citrix\Independent Management Architecture\mf20.dsn" DSMAINT RECREATELHC RESTART IMASERVICE
New terms and important words are shown in bold. Words that you see on the screen, for example, in menus or dialog boxes, appear in the text like this: "Go to the virtual machine properties in Virtual Device Node, free up the position 0:0."
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