Chapter 19. Managing the Cloud

•listNetworkACLs

•listStaticRoutes

19.2. Setting Configuration Parameters

19.2.1. About Configuration Parameters

CloudPlatform provides a variety of settings you can use to set limits, configure features, and enable or disable features in the cloud. Once your Management Server is running, you might need to set some of these configuration parameters, depending on what optional features you are setting up. You can set default values at the global level, which will be in effect throughout the cloud unless you override them at a lower level. You can make local settings, which will override the global configuration parameter values, at the level of an account, zone, cluster, or primary storage.

The documentation for each CloudPlatform feature should direct you to the names of the applicable parameters. The following table shows a few of the more useful parameters.

Field

Value

 

 

management.network.cidr

A CIDR that describes the network that the

 

management CIDRs reside on. This variable

 

must be set for deployments that use vSphere. It

 

is recommended to be set for other deployments

 

as well. Example: 192.168.3.0/24.

 

 

xen.setup.multipath

For XenServer nodes, this is a true/false variable

 

that instructs CloudStack to enable iSCSI

 

multipath on the XenServer Hosts when they are

 

added. This defaults to false. Set it to true if you

 

would like CloudStack to enable multipath.

 

If this is true for a NFS-based deployment

 

multipath will still be enabled on the XenServer

 

host. However, this does not impact NFS

 

operation and is harmless.

 

 

secstorage.allowed.internal.sites

This is used to protect your internal network

 

from rogue attempts to download arbitrary files

 

using the template download feature. This is a

 

comma-separated list of CIDRs. If a requested

 

URL matches any of these CIDRs the Secondary

 

Storage VM will use the private network interface

 

to fetch the URL. Other URLs will go through

 

the public interface. We suggest you set this

 

to 1 or 2 hardened internal machines where

 

you keep your templates. For example, set it to

 

192.168.1.66/32.

 

 

use.local.storage

Determines whether CloudStack will use storage

 

that is local to the Host for data disks, templates,

 

and snapshots. By default CloudStack will not

 

use this storage. You should change this to

 

true if you want to use local storage and you

 

understand the reliability and feature drawbacks

 

to choosing local storage.

 

 

 

 

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Citrix Systems 4.2 manual Setting Configuration Parameters, About Configuration Parameters, Managing the Cloud
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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.
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