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Posts Tagged ‘Citrix’

[Citrix] XenServer 7.0 released

May 27th, 2016 No comments

XenServer 7 was released in May of 2016.  It was available in pre-release form under the project name of Dundee.  All new XenServer installations should be made using XenServer 7.

Microsoft Technology integration

Citrix has a long history of integrating with, and supporting Microsoft operating systems and infrastructure products, and XenServer 7 is no exception.

  • Automated Microsoft Windows VM driver management
    Do you administer a larger XenServer environment? We currently support up to 1000 VMs per host, and have customers running thousands of hosts, so when time comes to updating the Windows VMs’ XenTools, it can be quite a challenge. Even with smaller infrastructures, the process of updating many Windows VMs can be a headache, something we’ve heard loud and clear from our customers. Our solution? Automation.
    In XenServer 7, it is now possible to let Microsoft Update Services automatically install and/or update the Windows VM I/O drivers contained within those VMs, moving this once cumbersome process into the standard organizational framework for how their Windows machines are updated.
  • Microsoft Server Message Block (SMB) support
    Adding to the wide variety of host storage connectivity, XenServer 7 now includes SMB to enable IT admins to use Windows storage devices running SMB for their XenServer VM’s disks.
  • Docker containers in Windows Server 2016
    In May 2015, XenServer introduced Docker container management for Linux VMs, opening up visibility and management to IT admins, of the containers being used within their XenServer infrastructures. This year for XenServer 7, we are really excited to be supporting Docker containers on Microsoft Windows Server 2016 OS, rounding off our of Docker support across both Linux and Windows, the first and only commercial hypervisor to do so.
  • A new Microsoft System Center Operations Manager (SCOM) management pack is now integrated and licensed in XenServer 7. For customers wanting greater Microsoft SCOM management visibility, this ties in well across the Citrix stack.
  • The Microsoft Active Directory integration within XenServer has been improved, changing the underlying connectivity components, which increases the scalability to support large AD forests, whilst also increasing performance.
  • XenServer 7 includes templates for Microsoft Windows 10 and preview of Windows Server 2016.

Revolutionary Security

Infrastructure security is always a challenge, and whether it’s protection from viruses, malware or hackers, there are a variety of tools and methods used by security vendors to help businesses protect their IT infrastructures from the variety of tools and methods used by the people with malicious intent. A big challenge is how malware and hackers get around, disable, or hide themselves from existing security solutions.

If someone can leverage a software vulnerability to gain access to a system, they tend to work their way up the security chain, seeking to get the highest level of system privileges from where they can disable security software and do the most damage or gain access to the most sensitive data.

XenServer 7 is different.

Working closely with Bitdefender, Citrix is proud to announce XenServer Direct Inspect APIs, which allow integration from third party security software companies to leverage hypervisor memory introspection (HVMI). This uses a privileged security appliance (SVA), one per-host to inspect the memory of VMs running on the host. As introspection is happening from outside the guest VM, there are no agents required within the VMs, and as such, nothing for a virus, piece of malware or hacker to disable within the VM. Should anyone also hack into a VM OS, they would also only be able to see within the boundaries of that VM container, and be completely unaware that a host-based SVA could be monitoring and blocking their activity; we call this “better than physical” protection.

diagram-6

Security products based on virus or malware signatures protect you from known risks, however what about day-zero attacks? How do you protect yourself against something for which there is no known signature? Bitdefender’s integration goes beyond the standard signature checking, by examining the techniques used by viruses or malware rather than their signatures, enabling protection of systems against day-zero attacks.

This solution isn’t targeted at replacing all disk based scanning protection, as the Direct Inspect APIs feature is a memory based solution, yet it extends protection through either a kernel-mode or user-mode (for specific applications), providing protection against a variety of security threats, including existing security products from being disabled. As such it complements existing disk based protection solutions. Find out more from Bitdefender on this blog and data sheet.

Some papers:

More information: Citrix

sanderdaems

Sander Daems is founder and author of this blog and working as a Sr. Infrastructure Consultant by IT-Value. Sander has over 10 years experience in IT, primary focus: virtualization, storage and SBC

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VMware: VMware image customization is in progress … every reboot

December 10th, 2012 6 comments

Last week I cloned some Citrix XenApp servers by a customer, after multiple reboots I saw boot message:

VMware image customization is in progress …

VMpros.nl

 

Solution:

Open the Registry Editior, path:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\BootExecute

image

 

Remove the value: sysprepDecrypter.exe , result:

image

 

Press OK, reboot the server and.. the problem is solved!

sanderdaems

Sander Daems is founder and author of this blog and working as a Sr. Infrastructure Consultant by IT-Value. Sander has over 10 years experience in IT, primary focus: virtualization, storage and SBC

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VMware: Citrix Provisioning Target boot can take more than 5 minutes on vSphere 4.1

July 18th, 2012 2 comments

I’m currently working on a project with Citrix Provisioning 6.1 build 1082 / XenApp 6.5 RP1 running on a VMware vSphere 4.1 build 721871 cluster, we discovered some boot “time” problems at the target VM’s, some of our Citrix XenApp 6.5 targets take more then 5 minutes to get past the bootstrap portion of the boot process.


Solution:

BUG0321533: Booting in a VMware environment can take more than 4 minutes to get past the bootstrap portion of the boot process. This has only been reported using ESX 4.1

Download hotfix: here

1. From Provisioning Services server machine, backup the following file: ARDBP32.bin

For Windows 2008 this file is located in (default) "C:\ProgramData\Citrix\Provisioning Services\Tftpboot".

2. Copy the following file included in the hotfix folder to the "Tftpboot" sub-directory indicated above:

ARDBP32.bin

3. Back up the following files from the Provisioning Services-installation-folder\TSBboot folder (Default is C:\Program Files\Citrix\Provisioning Services\TSBboot):

TSBBDM.BIN

4. Copy the following files from the hotfix folder to the Provisioning Services-installation-folder\TSBboot folder (Default is C:\Program Files\Citrix\Provisioning Services\TSBboot):

TSBBDM.BIN

image

Read more…

sanderdaems

Sander Daems is founder and author of this blog and working as a Sr. Infrastructure Consultant by IT-Value. Sander has over 10 years experience in IT, primary focus: virtualization, storage and SBC

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Microsoft: Windows 2008 Citrix XenApp 5.0 Client Time Zone won’t redirect

October 5th, 2009 1 comment

Installed this hotfix:

Hotfix XAE500W2K8030 – For Citrix XenApp 5.0 for Windows Server 2008 x86
http://support.citrix.com/article/CTX122563

Set the following policy’s:

Citrix Policy’s: Default Policy – User Workspace – Time Zones – Do not estimate local time: Enabled
Citrix Policy’s: Default Policy – User Workspace – Time Zones – Do not use Clients’ local time: Disabled

Local policy: Computer Configuration > Policies > Administrative Templates >Windows Components > Terminal Services > Terminal Server > Device and Resource Redirection > Allow time zone redirection: Enabled

 

I rebooted the Citrix servers and the Client Time Zone is active for the Citrix users.

 

Check also: Citrix KB

sanderdaems

Sander Daems is founder and author of this blog and working as a Sr. Infrastructure Consultant by IT-Value. Sander has over 10 years experience in IT, primary focus: virtualization, storage and SBC

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Categories: Citrix, Microsoft Tags: , , ,

Citrix: Citrix Print Management Service is missing

September 23rd, 2009 No comments

I was called yesterday that local printers and some network printers arn’t mapped in a user Citrix session. Normally you can choose and test with restarting from the Windows Print Spooler en Citrix Print Management Service but… there was no Citrix Print Management Service.

With CtxCpsvc10.exe you can Uninstall, Install the Citrix Print Management service and you can recreate the ctx_cpsvcuser user with the correct startup credentials in the service.

 

In my case I used: cpsvc.exe –install to install the Citrix Printer Service

Result: Citrix Printer Service installed.

  Read more…

sanderdaems

Sander Daems is founder and author of this blog and working as a Sr. Infrastructure Consultant by IT-Value. Sander has over 10 years experience in IT, primary focus: virtualization, storage and SBC

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Citrix: Error code 0 (0) by opening Citrix Presentation Server Console

September 23rd, 2009 2 comments

Today I got many problems with my Citrix 4.5 farm, by opening Presentation Server Console i got this error:

Error code 0 (0) occurred while attempting to execute ‘C:\Program Files\Java\jre1.5.0_11\bin\javaw.exe’ with working directory ‘C:\PROGRA~1\Citrix\ADMINI~1\ctxload.exe

image

In de Application Eventlog I receive MSI install errors by opening Presentation Server Console:

Detection of product ‘{44412985-02EE-4824-9EA5-B2AF6D98924E}’, feature ‘CTX_MF_MetaFrame_Core’ failed during request for component ‘{79ED246A-69C7-4CEF-B5A2-57EC3B86BC31}’
Read more…

sanderdaems

Sander Daems is founder and author of this blog and working as a Sr. Infrastructure Consultant by IT-Value. Sander has over 10 years experience in IT, primary focus: virtualization, storage and SBC

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Microsoft: Running Citrix Webinterface 5.1 on Windows 2003 64-bit

August 23rd, 2009 No comments

After installing Citrix Webinterface 5.1 on my Windows 2003 R2 SP2 64-bit VM i get the following error:

ISAPI Filter ‘C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\aspnet_filter.dll’ could not be loaded due to a configuration problem. The current configuration only supports loading images built for a AMD64 processor architecture. The data field contains the error number. To learn more about this issue, including how to troubleshooting this kind of processor architecture mismatch error, see http://go.microsoft.com/fwlink/?LinkId=29349.

To resolve this error you must prepare your IIS and ASP.NET 2.0 to an 64-bit application.

ASP.NET 2.0, 64-bit version

 

To run the 64-bit version of ASP.NET 2.0, follow these steps:

  1. Click Start, click Run, type cmd, and then click OK.
  2. Type the following command to disable the 32-bit mode:

    cscript %SYSTEMDRIVE%\inetpub\adminscripts\adsutil.vbs SET W3SVC/AppPools/Enable32bitAppOnWin64 0

  3. Type the following command to install the version of ASP.NET 2.0 and to install the script maps at the IIS root and under:

    %SYSTEMROOT%\Microsoft.NET\Framework64\v2.0.50727\aspnet_regiis.exe -i

  4. Make sure that the status of ASP.NET version 2.0.50727 is set to Allowed in the Web service extension list in Internet Information Services Manager
    Result:

Enable32bitAppOnWin64           : (BOOLEAN) False

Finished installing ASP.NET (2.0.50727).

 

And my Citrix Webinterface is working:

image

Source: Microsoft

sanderdaems

Sander Daems is founder and author of this blog and working as a Sr. Infrastructure Consultant by IT-Value. Sander has over 10 years experience in IT, primary focus: virtualization, storage and SBC

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Citrix: Disable Macromedia Flash objects

May 8th, 2009 No comments

Performance technisch kan je er voor kiezen om Macromedia Flash te disablen op een Citrix omgeving. Dit kan op Farm niveau worden uitgeschakeld:

image

Daarnaast kan er worden gekozen om dit uit te schakelen in het register. Deze sleutel zorgt er ook voor dat er geen popups verschijnen indien er een Flash animatie gestart wilt worden of een Active X applicatie geinstalleerd moet worden.

Open binnen het register het volgende path:

HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\ActiveX Compatibility\{D27CDB6E-AE6D-11CF-96B8-444553540000}

Maak een DWORD aan genaamd “Compatibility Flags” met waarde: 0×00000400 (1024 in decimal)

Zie als voorbeeld:

image

Meer informatie: CTX110407

sanderdaems

Sander Daems is founder and author of this blog and working as a Sr. Infrastructure Consultant by IT-Value. Sander has over 10 years experience in IT, primary focus: virtualization, storage and SBC

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Categories: Citrix, Microsoft Tags: , ,

VMware: Terminal server performance tuning on VMware ESX

May 5th, 2009 No comments

Er zijn nogal wat problemen omtrent Windows Terminal Servers/Citrix op VMware ESX servers. Wat zijn nou de beste instellingen om performance te waarborgen.

Om dit allemaal uit te zoeken ben ik bezig geweest bij een klant die performance problemen ervaren. Deze klant heeft meerdere ESX hosts, een host heb ik gepakt om bezig te gaan met de performance problemen. De host en VM’s hebben de volgende specificaties:

ESX Host Configuratie:

Model: HP ProLiant DL380 G5

Processors: 8 CPU x 1,999 Ghz

Processor Type: Intel® Xeon® CPU  E5335 @ 2.00 Ghz

Number of NICs: 6

OS: VMware ESX 3.5 u4

vSwitch Configuratie:

vSwitch 1:
Read more…

sanderdaems

Sander Daems is founder and author of this blog and working as a Sr. Infrastructure Consultant by IT-Value. Sander has over 10 years experience in IT, primary focus: virtualization, storage and SBC

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