Virtualization

Run virtual machines at near-native speeds and manage them at ease

Virtualization Installing QEMU on Fedora Linux Fetching OVMF UEFI from the correct source Installing libvirt and virt-install on Fedora Linux Setting up Fedora Workstation VM on QEMU using BIOS Setting up Fedora Workstation VM on QEMU using UEFI Setting up intrinsic VNC server with VMs Setting viewport resolution using OVMF BIOS Setting up Fedora Workstation domain on libvirt Sharing a chunk of memory as video memory in QEMU Mapping a virtualized guest port to a host port Playing around with various VGA providers Offloading domain TTY output to console with custom kernel/initramfs images Offloading domain TTY output to console with original kernel/initramfs images
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Setting up intrinsic VNC server with VMs

  1. Download the Fedora Workstation ISO file from website and store it in a reference directory cdromimg. 
    https://getfedora.org
  2. Start a virtual machine for setting up intrinsic VNC server for the live ISO and there is no need for a virtual disk image here. 
    $ qemu-system-x86_64 \
    -boot menu=on \
    -m 2048 \
    -cpu max \
    -smp 4 \
    -cdrom cdromimg/<Fedora-Workstation-Live-x86_64-xx-y.z.iso> \
    -vnc 0.0.0.0:59,password=on \
    -accel kvm \
    -monitor stdio

    QEMU 5.2.0 monitor - type 'help' for more information
(qemu)
  3. Visit https://www.realvnc.com/en/connect/download/viewer/ in an internet browser of choice, download and install the VNC viewer application either on the host device or another device in the same network.
  4. Head back to the prompt where the VM was started and type in the following command in the (qemu) console to change the default VNC password. 
    change vnc password

    QEMU 5.2.0 monitor - type 'help' for more information
(qemu) change vnc password
Password: ********
  5. Switch to the VNC Viewer window and type in 0.0.0.0:5959 from the host device (or <ip-address-of-host-device>:5959 if accessed from another device in the same network) - 59 from the command referring to the offset from 5900 which is the default VNC port.
    01
  6. A window would appear warning about the nature of the connection being unencrypted. This is fine for a closed network so click on the Continue button.
    02
  7. Another window would appear which would ask for password. Enter the password that was set in the step #5 and then click on the OK button.
    03
  8. Finally a window showing the virtual desktop of the live environment would show up and it can be used to interact with the VM.
    04

References

  1. https://qemu-project.gitlab.io/qemu/system/vnc-security.html

Authors: Akashdeep Dhar, Jarek Prokop, Nick Dirschel