If you are deploying a Linux virtual machine on a Hyper-V host, you must install Linux Integration Services (LIS) in the guest operating system. Hyper-V Linux Integration Services allow the guest OS to interact with the host: send its state to the hypervisor, perform backups via VSS, correctly reboot and shutdown the Linux guest. In this tutorial, we’ll take a look at how to install Hyper-V Linux Integration Services on popular Linux distros – CentOS, Debian, and Ubuntu.
Install Hyper-V Linux Integration Services on Ubuntu
Before installing Hyper-V Linux Integration Services in an Ubuntu virtual machine, you must add hv_modules to initramfs-tools:
# echo 'hv_vmbus' >> /etc/initramfs-tools/modules # echo 'hv_storvsc' >> /etc/initramfs-tools/modules # echo 'hv_blkvsc' >> /etc/initramfs-tools/modules # echo 'hv_netvsc' >> /etc/initramfs-tools/modules
Then update the apt packages:
# apt update && apt -y upgrade
Now you need to install the Hyper-V integration packages for Ubuntu:
# apt -y install linux-virtual linux-cloud-tools-virtual linux-tools-virtual # update-initramfs -u # reboot
Check that the LIS integration features are installed:
# lsmod | grep hv
The command will display a list of loaded Hyper-V modules.
On Ubuntu 16.04, 18.04, 20.04, and 22.04 LTS, you can install the Hyper-V integration drivers that Microsoft uses for VMs in Azure:
# apt update # apt install linux-azure
Check the version of the Linux Integration Services kernel modules with the command
# /sbin/modinfo hv_vmbus
If you have an older version of LIS installed on Ubuntu, you can update it using the commands below:
# wget https://download.microsoft.com/download/6/8/F/68FE11B8-FAA4-4F8D-8C7D-74DA7F2CFC8C/lis-rpms-4.3.5.x86_64.tar.gz # tar -xzf lis-rpms-4.3.5.x86_64.tar.gz # cd LISISO/ # ./upgrade.sh # reboot
Check the hv_vmbus version after the upgrade:
# /sbin/modinfo hv_vmbus
Enable Hyper-V Linux Integration Services on Debian
In Debian 9 and earlier, you need to manually add the Hyper-V LIS modules to the initramfs:
# nano /etc/initramfs-tools/modules
Add the following options:
Install Hyper-V integration components and reboot Debian:
# apt-get install -t jessie-backports hyperv-daemons # update-initramfs -u # reboot
Linux Integration Services kernel modules are included in the default Debian 10 (Buster) distro, and you only need to install Hyper-V Integration Services from the official Debian repository:
# apt-get install hyperv-daemons # reboot
The new Debian 11 (Bullseye) has both LIS and hyper-v daemons installed by default, so there is no need to install anything separately.
Check that the hyperv daemons are configured to start automatically:
# systemctl status hyperv-daemons.hv-*
How to install Hyper-V Linux Integration Services on CentOS?
Linux Integration Services components are already contained in the base CentOS image and don’t need to be installed separately (CentOS 6.4 and newer). However, there are several additional Hyper-V Guest Services that can improve the communication between Hyper-V and the CentOS guest:
- VSS daemon (used for snapshot backups) –
- File copy daemon (allows you to use PowerShell to copy files directly between VM and host via VMbus) and KVP data exchange service –
These services are installed from the base CentOS repositories:
# yum install hyperv-daemons # yum list installed | grep hyperv
Start the service:
# systemctl enable hypervkvpd hypervvssd # systemctl start hypervkvpd hypervvssd
After installation, reboot the VM and check that the Hyper-V VSS daemon service is running:
# systemctl status hypervvssd
On older versions of CentOS 6, Hyper-V Integration Services can be installed from the Linux Integration Services (LinuxIC) CD. Download LIS 4.3 ISO image from here Linux Integration Services v4.3 for Hyper-V and Azure.
Or you can install the Hyper-V integration component from the EPEL repository:
# yum install epel-release # yum install hyperv-daemons # reboot
Check that Hyper-V Integration Services are running on CentOS 6:
# service --status-all | grep hv_*
hv_fcopy_daemon is stopped
hv_kvp_daemon (pid 1121) is running...
hv_vss_daemon (pid 1329) is running...
If you try to back up a Linux VM with CentOS guests using any tool with VSS support, the log should contain lines from the hv_vss_daemon service:
# tail -f /var/log/messages | grep Hyper-V
Check that the hypervvssd service is running if VSS is not working properly:
# systemctl status hypervvssd
Managing Linux Integration Services in Hyper-V
After installing the Hyper-V Integration Components in a Linux VM, you can get information about the guest operating system from the Hyper-V host. To list the versions of the LIS components on Linux, run the following PowerShell command
Get-VM | Format-Table Name, IntegrationServicesVersion
You can get the status of Hyper-V integration services on a specific VM:
Get-VMIntegrationService -VMName LinuxVM1
- Guest Service Interface
- Key-Value Pair Exchange
- Time Synchronization
In this example, the Key-Value Pair Exchange shows “No Contact”. This may mean that the component is disabled in the guest Linux or disabled in the VM settings.
You can enable/disable the integration component for a VM using the commands:
Enable-VMIntegrationService -VMName LinuxVM1 -Name "Time Synchronization"
Disable-VMIntegrationService -VMName LinuxVM1 -Name "Time Synchronization"
Or you can enable/disable the specific integration service through the Hyper-V console (open VM settings and go to the Integration Services tab).
Copy-VMFile -Name LinuxVM1 -SourcePath 'C:\pc\ifcfg-eth0' -DestinationPath '/etc/sysconfig/network-scripts/' -FileSource Host -Force
Enable Hyper-V Enhanced Session Mode for Ubuntu VM
You can use Enhanced session mode to connect to a Linux virtual machine on a Hyper-V host via RDP. In this mode, you will be able to use on Linux VM all the features that are available for Windows virtual machines in the Hyper-V connection console (clipboard, device redirection, large screen resolution, connection to an isolated VM via the vmbus, etc.).
In this example, we will enable Enhanced session mode on a virtual machine running Ubuntu 22.04 LTS:
- Check that the Generation 2 of Hyper-V virtual machines is used for the VM and Secure Boot support for Linux is enabled in the virtual hardware settings. In order for Secure Boot to work correctly, you need to change the template in the VM settings from “Microsoft Windows” to “Microsoft UEFI Certificate Authority”. If not, an error will be displayed during the VM boot:
The image's hash and certificate are not allowed (DB).
- Install Hyper-V Linux Integration Services in the guest Ubuntu as described above;
- Install XRDP with XORGXRDP:
$ wget https://raw.githubusercontent.com/Microsoft/linux-vm-tools/master/ubuntu/18.04/install.sh $ sudo chmod +x install.sh $ sudo ./install.sh
- Change the connection port in xrdp.ini:
# nano /etc/xrdp/xrdp.ini
- Shut down the Ubuntu VM and use PowerShell commands to enable Enhanced session mode support on the Hyper-V host:
Set-VMHost -EnableEnhancedSessionMode $true Set-VM -VMName yourUbuntuVM -EnhancedSessionTransportType HvSocket
- Now when you connect to your VM’s console through Hyper-V Manager, the advanced XRDP connection mode will always be used.