![]() Conclusion:Ĭongratulations! You’ve successfully installed KVM on your Ubuntu Server 20.04. Refer “ virt-instal l” man page to get more information about its different options and parameters. ![]() We will get the following cli screen, follow the instructions and complete CentOS 7 installation, Note: Change the parameters in above command that suits to your environment Virt-install is command line utility to install kvm VMs, example is shown below sudo virt-install -n CentOS-Server -description "VM for Database" -os-type=Linux -os-variant=rhel7 -ram=1096 -vcpus=1 -disk path=/var/lib/libvirt/images/centos-server.img,bus=virtio,size=10 -network bridge:br0 -graphics none -location /home/sysadm/CentOS-7-x86_6.iso -extra-args console=ttyS0 Creating Virtual Machines From Command Linue using virt-install In the next window, specify the disk size for the VM,Ĭhoose the network that you want to connect to the VM, in my case I am attaching the same network bridge (br0) that we have created in the above step and set the VM name as per the requirement.Ĭlick on Finish to start OS installation.įollow the screen instructions and complete Debian 10 OS installation. In the next window, specify the RAM and vCPUs for your VM and then click on forward Now start creating a virtual a machine, click on Monitor IconĬhoose the first option and then click on forward,īrowse installation media like ISO file locally, in my case it’s Debian 10 ISO file which is placed in sysadm user’s home directory. Once the system is available after reboot, open the terminal and type virt-manager command to start gui, Once xorg packages are installed, reboot your server. Virt-manager is X11-server based GUI (graphical user interface), so it requires xserver environment, run below commands to setup minimal xserver environment sudo apt sudo apt-get install xorg -y Great, above command’s output confirm that network bridge br0 is activated and configured successfully. Status of bridge br0 can also be verified from following ip command, ip a s sudo netplan below commands to verify the status of br0 bridge sudo networkctl status br0 Run “ netplan apply” command to activate the bride br0 and to make above changes into the effect. # This is the network config written by 'subiquity' After making the changes, content of the file would look like below: sudo vi /etc/netplan/00-installer-config.yaml cat /etc/netplan/00-installer-config.yamlĪdd network bridge entries, remove IP from enp0s3 interface and assign the same IP to the network bridge(br0). To create a network bridge, we need edit the file “ /etc/netplan/00-installer-config.yaml” Following is the content of my server’s file before making the changes. Though a virtual bridge “ virbr0” is created automatically when we install KVM, but this is only used for testing purpose. In this step, we will configure a network bridge for KVM VMs so that VMs can be accessed from outside. In case libvirtd service is not started by any reason then run following command to start and enable it sudo systemctl enable libvirtd -now 4) Setup Network Bridge for KVM Virtual Machines Output above command would look like below, When we install KVM then libvirtd service get started automatically, run below command to verify its status, sudo systemctl status rvice Kvm 663552 1 3) Start and verify libvirtd Service Once all the packages have been installed successfully, verify whether KVM module is loaded into loaded or not using lsmod command, lsmod | grep -i kvm ![]() sudo apt install -y qemu qemu-kvm libvirt-daemon bridge-utils virt-manager virtinst Run the beneath apt command to install KVM, bridge-utils, virt-manager and other kvm dependencies. 2) Install KVM, virt-manager and bridge-utils KVM acceleration can be output confirms that KVM based virtual machines can be installed on our server. Once the “ cpu-checker” package is installed, run “ kvm-ok” command and verify its output kvm-ok If you wish to verify whether your server is capable of running KVM virtual machines then install “kvm-ok” utility using below apt command, sudo apt install -y cpu-checker If the output is not greater than zero then reboot your server, go to its bios settings and enable VT technology. ![]() Login to your Ubuntu server 20.04 and run following grep command, grep -E -c "vmx|svm" output confirms that server supports hardware virtualization. 1) Check Whether Server Support Hardware Virtualization
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