Citrix анонсировала новый гипервизор Citrix Hypervisor 8.2 с долгосрочной поддержкой

Citrix анонсировал новый гипервизор Citrix Hypervisor 8.2 с долгосрочной поддержкой.  В новой версии гипервизора учтены все обновления, сделанные с момента выхода XenServer 7.1, включая поддержку хостов с 6 Тбайт оперативной памяти и до 448 логических процессоров. Протокол TLS 1.2 стал обязательным для сетевого трафика между гипервизором и внешним миром, заменив менее защищённые TLS 1.0 и 1.1.

Ещё одним заметным изменением стал отказ от поддержки Windows 7 и Windows Server 2008 в качестве гостевых операционных систем. Вместе с тем сохранилась поддержка более поздних версий Windows Server, Windows 8.1, Windows 10, RHEL, SUSE, CentOS, Oracle Linux, Debian, Ubuntu, CoreOS, Scientific Linux и даже KeoKylin Linux.

Новая версия гипервизора будет поддерживаться компанией в течение 5 лет с опцией продления ещё на 5 лет.

New features and improvements in Citrix Hypervisor 8.2

Citrix Hypervisor 8.2 introduces enhanced features and functionality for application, desktop, and server virtualization use cases. All Citrix Hypervisor 8.2 features are available to all licensed Citrix Virtual Apps and Desktops customers.

Increased configuration limits

The following configuration limits have been increased:

• The maximum host RAM is now 6 TB
• The maximum number of logical processors per host is now 448 CPUs

For more information, see Configuration limits.

Enable and disable read caching from within XenCenter

The read caching feature improves performance on NFS, EXT, or CIF/SMB SRs that host multiple VMs cloned from the same source. This feature can now be enabled and disabled for each individual SR from the XenCenter console. You might want to disable read caching in the following cases:

• You have no file-based SRs
• You do not have any cloned VMs
• You have insufficient memory available to allocate to dom0 to derive any performance benefits

For more information, see Changing SR Properties.

Changes to guest operating system support

The set of guest operating systems that Citrix Hypervisor supports has been updated. For more information, see Guest operating system support.

Added

Citrix Hypervisor now supports the following additional guest operating systems:

• SUSE Linux Enterprise Server 12 SP5 (64-bit)
• Ubuntu 20.04 (64-bit)

Removed

• Windows 7
• Windows Server 2008
• Windows Server 2008 SP1

Security improvements

Install a TLS certificate on your Citrix Hypervisor server

Citrix Hypervisor now enables easy installation of server TLS certificates.

The Citrix Hypervisor server comes installed with a default TLS certificate. However, to use HTTPS to secure communication between Citrix Hypervisor and Citrix Virtual Apps and Desktops, you must install a new certificate. The certificate authority issuing the certificate must be trusted by the Citrix Virtual Apps and Desktop installation.

This feature provides a mechanism to update host certificates that does not require the user to have access to the Citrix Hypervisor server file system. It also verifies that the certificate and key files are valid and in the correct format.

You can install a TLS certificate on the Citrix Hypervisor server by using one of the following methods:

• XenCenter. For more information, see Install a TLS certificate on your server in the XenCenter documentation.
• xe CLI. For more information, see Install a TLS certificate on your server.
• API. For more information, see the Management API guide.

This feature also provides XenCenter alerts when a server TLS certificate is about to expire. For more information, see System Alerts in the XenCenter documentation.

Enforcing use of the TLS 1.2 protocol

Citrix Hypervisor now enforces the use of the TLS 1.2 protocol for any HTTPS traffic between Citrix Hypervisor and an external network. All Citrix Hypervisor components use the TLS 1.2 protocol when communicating with each other.

As part of this feature the legacy SSL mode and support for the TLS 1.0/1.1 protocol have been removed. Ensure you disable legacy SSL mode in your pools before upgrading or updating them to Citrix Hypervisor 8.2. If you have any custom scripts or clients that rely on a different protocol, update these components to use TLS 1.2.

Disaggregation of the Citrix VM Tools

The Citrix VM Tools are now provided as two separate components on the Citrix Hypervisor download page:

• Citrix VM Tools for Windows
• Citrix VM Tools for Linux

As a result, the guest-tools.iso file has been removed from the Citrix Hypervisor installation.

Providing the tools as a separate component removes the need for hotfixes to apply updates to a tools ISO stored on the Citrix Hypervisor server.

For more information, see Linux VMs and Windows VMs.

Updates to the Workload Balancing appliance and Conversion Manager appliance

Both of these additional components now include the following improvements:

• Platform updated to CentOS 7.7
• Performance gains from using JSON-RPC to communicate with Citrix Hypervisor
• OpenSSL updated to version 1.1.1
• Other third-party libraries updated for security and performance improvements
• TLS 1.2 is now enforced to ensure security

Installation options

Citrix Hypervisor 8.2 is available to download from the Citrix Hypervisor Product Download page in the following packages:

• Citrix Hypervisor 8.2 Update ISO. Use this file to apply Citrix Hypervisor 8.2 as an update to Citrix Hypervisor 8.1 or 8.0.

• Citrix Hypervisor 8.2 Base Installation ISO. Use this file to create a fresh installation of Citrix Hypervisor 8.2 or to upgrade from XenServer 7.1 CU2 or 7.0.

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