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Valshardreg
Asked: 2024-10-19 05:32:16 +0800 CST

Ubuntu Server and Vm's

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I have Ubuntu Server questions.

When I install Ubuntu Server on my Rack Server if I want to run many vm's I then have to install install Multipass on the Rack Server?

And once installed I can install normal Ubuntu in a vm and then I can install various versions of Windows in vms as well?

Am I correct in all that?

Thanks Valshar

server

1 Answers

  1. Best Answer

    Multipass

    Multipass is for Ubuntu server guests only. Multipass doesn't have Ubuntu desktop installed by default. But you may install the Ubuntu-Desktop in the Multipass Ubuntu server, and connect to it remotely using xrdp.

    QEMU-KVM

    You may want to install qemu-kvm if you want to install Windows as a guest.

    Step 1: Check if your server is compatible with KVM

    Open a terminal in your Ubuntu server and run the command:

    egrep -c '(vmx|svm)' /proc/cpuinfo

    If the command returns a value of 0, your processor is not capable of running KVM. On the other hand, any other number means you can proceed with the installation.

    Next, check if your system can use KVM acceleration:

    sudo kvm-ok

    It should output:

    INFO: /dev/kvm exists
KVM acceleration can be used

    Step 2: Install KVM Packages

    sudo apt install qemu-kvm libvirt-daemon-system libvirt-clients bridge-utils

    Step 3: Authorize Users (may not be necessary)

    Only members of the libvirt and kvm user groups can run virtual machines. If you want specific users to run VMs, add them to those user groups.

    sudo adduser [username] libvirt
sudo adduser [username] kvm

    Replace [username] with the actual username.

    Source of the above how to install KVM.

    Step 4: Install VMM on (another) Ubuntu with Desktop

    Since your Ubuntu server installed on the rack server won't have a desktop GUI, you won't be able to use Virtual Machine Manager (VMM) directly on Ubuntu server host.

    However, you may install the VMM GUI app in another Ubuntu Desktop and connect it to the server through an ssh+qemu tunnel.

    Once you install VMM on your Ubuntu desktop, you can open the VMM app and go to File > Add Connections... menu. It will open a new window:

    enter image description here

    1. Check the box next to Connect to remote host over SSH.
    2. Replace username if it is not root.
    3. Under Hostname: add the IP address or the fully qualified domain name (FQDN) of your Ubuntu server on the rack.
    4. Then click connect.

    Once connected, you may use the VMM GUI to create, manage, and connect to the Ubuntu, Windows and other VM guests.

    You may create Ubuntu Desktop or server VMs using the VMM. Or if you have already created Ubuntu server VMs using Mulitipass, see Ubuntu multipass - VMM for how to use VMM to manage the VMs created via Multipass.

    Hope this helps

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