Virtuozzo Hybrid Server 7.5 Update 2 (7.5.2-436)

Issue date: 2021-09-29

Applies to: Virtuozzo Hybrid Server 7.5

Virtuozzo Advisory ID: VZA-2021-047

1. Overview

Virtuozzo Hybrid Server 7.5 Update 2 introduces new features and provides stability and usability bug fixes. It also introduces a new kernel 3.10.0-1160.41.1.vz7.183.5.

2. New Features

  • AMD Milan CPU support. (PSBM-127046)

  • The latest Virtuozzo Storage core. (PSBM-129489)

  • Ability to convert CentOS 7 to VzLinux 8 in containers. (PSBM-125565)

  • The new ‘density’ policy for VE memory management. The new policy provides better density than the ‘performance’ policy. It also provides higher performance if memory is overcommitted or the same performance if it is not. (PSBM-133760)

  • Ability to install and update the guest tools from package repositories instead of ISO images. (PSBM-129749)

  • cPanel EZ template for CentOS 7 containers. (PSBM-126958)

  • Plesk EZ template for CentOS 7 containers. (PSBM-126957)

  • ISPmanager EZ template for CentOS 7 and VzLinux 8 containers. (PSBM-126956, PSBM-126960)

  • Support for AlmaLinux as a guest OS in containers. (PSBM-126392)

  • Support for Microsoft Windows Server 2022 as a guest OS in virtual machines. (PSBM-126773)

  • Support for Debian 11 as a guest OS in virtual machines and containers. (PSBM-133078, PSBM-133085)

  • Improvements in migration of virtual environments from Virtuozzo 6 to Virtuozzo Hybrid Server 7. In particular, VNC is now enabled in all virtual machines to be migrated. In addition, Parallels guest tools are now removed during the installation of Virtuozzo guest tools. (PSBM-123987, PSBM-123390)

3. Bug Fixes

  • The rate set with the ‘–rate’ option could not be unset. (PSBM-130799)

  • pcompact could run for too long and consume too much resources. (PSBM-132757)

  • pcompact could run longer than the set timeout. (PSBM-132275)

  • The ‘rate’ and ‘ratebound’ values were missing from the output of ‘prlctl list’. (PSBM-130798)

  • Failed migration of a container could result in that container being present on both the target and destination nodes. (PSBM-130335)

  • Unable to reboot a container that is being backed up. (PSBM-129771)

  • Configuring multiple VM settings at the same time could fail. (PSBM-128213)

  • Containers with ‘ONBOOT’ set to ‘yes’ located on an iSCSI partition did not start automatically after node reboot. (PSBM-127669)

  • Virtuozzo release and ReadyKernel patch version were missing from the MOTD. (PSBM-132935)

  • Other fixes. (PSBM-129234, PSBM-130693, PSBM-131580, PSBM-131874, PSBM-132267, PSBM-132823, PSBM-133530)

4. Known Issues

  • Microsoft Windows Server 2022 virtual machines do not yet support Hyper-V disks. (PSBM-133918)

5. Installing the Update

Install the update with ‘yum update’. Reboot the host and switch to the new kernel.

The new and updated packages are listed in the JSON file.