# service cloud-usage stop | Citrix Systems 4.2 manual

Chapter 4. Upgrade Instructions

5.Stop all Usage Servers if running. Run this on all Usage Server hosts.

#service cloud-usage stop

6.Stop the Management Servers. Run this on all Management Server hosts.

#service cloud-management stop

7.On the MySQL master, take a backup of the MySQL databases. We recommend performing this step even in test upgrades. If there is an issue, this will assist with debugging.

In the following commands, it is assumed that you have set the root password on the database, which is a CloudPlatform recommended best practice. Substitute your own MySQL root password.

#mysqldump -u root -p<mysql_password> cloud >> cloud-backup.dmp

#mysqldump -u root -p<mysql_password> cloud_usage > cloud-usage-backup.dmp

8.(RHEL/CentOS 5.x) If you are currently running CloudPlatform on RHEL/CentOS 5.x, use the following command to set up an Extra Packages for Enterprise Linux (EPEL) repo:

rpm -Uvh http://mirror.pnl.gov/epel/5/i386/epel-release-5-4.noarch.rpm

9.Download CloudPlatform 4.2 onto the management server host where it will run. Get the software from the following link:

https://www.citrix.com/English/ss/downloads/. You need a My Citrix Account1.

10.Upgrade the CloudPlatform packages. You should have a file in the form of “CloudPlatform-4.2- N-OSVERSION.tar.gz”. Untar the file, then run the install.sh script inside it. Replace the file and directory names below with those you are using:

#tar xzf CloudPlatform-4.2-N-OSVERSION.tar.gz

#cd CloudPlatform-4.2-N-OSVERSION

#./install.sh

You should see a few messages as the installer prepares, followed by a list of choices.

11. Choose "U" to upgrade the package

You should see some output as the upgrade proceeds, ending with a message like "Complete! Done."

12.If you have made changes to your existing copy of the configuration files components.xml, db.properties, or server.xml in your previous-version CloudPlatform installation, the changes will be preserved in the upgrade. However, you need to do the following steps to place these changes in a new version of the file which is compatible with version 4.2.

1http://www.citrix.com/lang/English/publicindex.asp?destURL=%2FEnglish%2FmyCitrix%2Findex.asp%3F#

4.2 specifications

Citrix Systems, a leading provider of virtualization solutions and cloud computing technologies, released version 4.2 of its popular software, Citrix XenApp, which was previously known as Presentation Server. This version marked a significant evolution in providing users with remote access to applications and desktops, emphasizing simplicity, performance, and security.

One of the standout features of Citrix XenApp 4.2 is its improved application streaming capabilities. This technology allows applications to be delivered to users in real-time, reducing the need for extensive local installations and enhancing the user experience. With application streaming, administrators can efficiently manage applications on a central server while ensuring that users have immediate access to the necessary tools.

Another highlight of this version is the enhanced security measures put in place to protect sensitive data. Citrix XenApp 4.2 includes support for SSL encryption, providing a secure communication channel for data transmitted between the server and clients. This is particularly crucial for businesses that need to comply with strict data protection regulations. Additionally, the integration of endpoint security features ensures that unauthorized access to applications is minimized.

Performance enhancements are also a critical focus in this release. Citrix optimized the delivery of applications over various network conditions, ensuring that users experience minimal latency regardless of their location. This was achieved through the incorporation of SmartAccess and SmartControl technologies, which allow administrators to set policies based on user roles, device types, and network conditions. This level of granularity enables organization-wide security without compromising on usability.

The user experience was further improved with a revamped interface, making it easier for end-users to access their applications and data. Simplified menus, clear navigation paths, and the ability to customize user settings contributed to a more efficient workflow, allowing users to focus on their tasks rather than struggling with the software.

Finally, Citrix XenApp 4.2 was designed to be highly scalable. Organizations of all sizes could deploy this solution to deliver applications efficiently, adapting to their specific needs as their user base grows or changes. This flexibility is crucial for businesses looking to future-proof their IT investments while maintaining optimal performance.

In summary, Citrix XenApp 4.2 stands out with its enhanced application streaming, robust security features, improved performance under varying conditions, user-friendly interface, and scalability, making it an ideal choice for organizations seeking to leverage virtualization for remote access to applications and desktops.