With its prominent features, KVM has been adopted and put into action by top cloud companies worldwide. Amazon has lately been issuing its offerings mainly based on KVM technology. Google on the other hand also uses KVM technology as the bottom rock for its Google Container Products.<\/p>\n\n\n\n
Install and Use KVM Virtualization on Oracle Linux 9<\/h3>\n\n\n\n
The <\/strong>installation of KVM on oracle Linux includes configuring the engine on the host, configuring KVM hosts, networks, and storage, and finally creating virtual machines.<\/p>\n\n\n\n You have to ensure your hardware virtualization from your BIOS is enabled. To check the type of processor for your processor, run:<\/p>\n\n\n\n Once the hardware virtualization is enabled in the BIOS, verify whether VT-x\/VT-d or AMD-v extension is enabled by running the following command:<\/p>\n\n\n\n Your output should show you the flag available, either svm <\/strong>or vmx. <\/strong>For my case, am using a vmx flag since my processor is intel.<\/p>\n\n\n\n You can as well use the lscpu <\/strong>command to do the above task:<\/p>\n\n\n\n Make sure your Oracle Linux 9 is fully upgraded to its packages. Let\u2019s first update the DNF package repository cache of your oracle Linux 9 machine by running the following command.<\/p>\n\n\n\n Now proceed to upgrade all the existing software packages with the use of the following command:<\/p>\n\n\n\n Your system should now be fully updated. Reboot your Oracle Linux 9 system for the changes to take effect:<\/p>\n\n\n\n Leaving SELinux in its default (enforcing<\/strong>) mode will lead to permission denied errors while creating KVM virtual machines. To avoid this error, edit the etc\/selinux\/config <\/strong>by changing the mode to permissive<\/strong><\/p>\n\n\n\n Save and exit the file.Reboot your Oracle Linux 9 system for the changes to take effect:<\/p>\n\n\n\n Remove any existing virtualization packages that might have been installed before. <\/p>\n\n\n\n Enable yum repositories<\/p>\n\n\n\n To install KVM on your machine, we will use the virtualization host <\/strong>package group <\/strong>by running the following command:<\/p>\n\n\n\n When prompted, press y<\/strong> and hit enter <\/strong>to continue with the installation.<\/p>\n\n\n\n KVM should be completely installed. Now verify that Kernel modules are loaded:<\/p>\n\n\n\n Now proceed to the installation of KVM tools like virt manager. <\/p>\n\n\n\n At this point, start the libvirtd<\/strong> service by running the following command. Libvirtd is a server-side daemon component of libvirt virtualization management system. Runs on a host server and helps in managing virtualized guests like starting, stopping, migrating guests, and managing network and storage for the host and guests.<\/p>\n\n\n\n Proceed to enable libvirtd <\/strong>service to start on boot with the following command:<\/p>\n\n\n\n Finally check service status to check if its running:<\/p>\n\n\n\n By default, KVM creates its path (\/var\/lib\/libvirt\/images) where it stores virtual machine volumes. To Identify existing storage domains on the host, use virsh command.<\/p>\n\n\n\n We note there is only one storage pool (default) on the host and is active. This storage pool is created automatically when KVM is installed.<\/p>\n\n\n\n Create your new storage location path for both VMs and ISOs<\/p>\n\n\n\n Stop the “default” storage pool to make it inactive. <\/p>\n\n\n\n Use the virsh command to edit default storage. <\/p>\n\n\n\n This will open an XML file where storage variables are defined. Edit the storage path in <path<\/mark>>\/var\/lib\/libvirt\/images<\/path<\/mark>><\/em> to your storage location. Mine will be as shown below. <\/p>\n\n\n\n Start default storage pool and enable autostart on system boot. <\/p>\n\n\n\n Verify that the storage path is set as expected. <\/p>\n\n\n\n Restart libvirtd service to apply the changes.<\/p>\n\n\n\n By default, libvirtd can only be accessed by the root user or user with root privilege via sudo command. To access it as a normal user, add your user to libvirt group. <\/p>\n\n\n\n Now navigate to the iso-images directory and start the installation or you can download the image and later move it into the directory.<\/p>\n\n\n\n Once the download is complete, we can now proceed to create a virtual machine.<\/p>\n\n\n\n We are going to use ISO downloaded to create our first VM on KVM in Oracle Linux 9. Below script will create a VM called Linuxmint, 2G RAM, using the storage domain we created and the default bridge<\/p>\n\n\n\n Replace the above to match your server. <\/p>\n\n\n\n You will receive the below output. <\/p>\n\n\n\n Check using virsh command if your VM is up. <\/p>\n\n\n\n Connect via virtual machine manager console to complete installation. <\/p>\n\n\n\n Complete installation via console now. <\/p>\n\n\n\n This step marks the end of our today’s guide on how to install KVM on Oracle Linux 9, the latest Oracle distro OS. We have also covered how you can configure storage domains, and create VMs using CLI and GUI as well. You can add and manage your host via WebVirtCloud<\/a>, the KVM web admin console. Follow the links below for more articles;<\/p>\n\n\n\n KVM Virtualization Known as a Kernel-based Virtual machine, KVM is an open-source virtualization technology built into Linux. The specific purpose of KVM is to turn Linux into a type-1 hypervisor(bare-metal) that allows a host machine to run multiple virtual machines. Avi Kivity developed KVM in the year 2006, the following year, it was merged into … Read more<\/a><\/p>\n","protected":false},"author":3,"featured_media":67322,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[299,86],"tags":[39505,39616],"class_list":["post-66609","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-how-to","category-virtualization","tag-kvm-virtualization","tag-oracle-linux-9"],"_links":{"self":[{"href":"https:\/\/computingforgeeks.com\/wp-json\/wp\/v2\/posts\/66609","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/computingforgeeks.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/computingforgeeks.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/computingforgeeks.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/computingforgeeks.com\/wp-json\/wp\/v2\/comments?post=66609"}],"version-history":[{"count":0,"href":"https:\/\/computingforgeeks.com\/wp-json\/wp\/v2\/posts\/66609\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/computingforgeeks.com\/wp-json\/wp\/v2\/media\/67322"}],"wp:attachment":[{"href":"https:\/\/computingforgeeks.com\/wp-json\/wp\/v2\/media?parent=66609"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/computingforgeeks.com\/wp-json\/wp\/v2\/categories?post=66609"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/computingforgeeks.com\/wp-json\/wp\/v2\/tags?post=66609"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Step 1: Enable hardware\/Nested virtualization<\/h3>\n\n\n\n
$ sudo grep -e 'vendor_id' \/proc\/cpuinfo<\/mark>\nvendor_id\t: GenuineIntel\nvendor_id\t: GenuineIntel<\/code><\/pre>\n\n\n\ngrep --color --perl-regexp 'vmx|svm' \/proc\/cpuinfo<\/code><\/pre>\n\n\n\n$ lscpu | grep Virtualization<\/mark>\nVirtualization: VT-x\nVirtualization type: full<\/code><\/pre>\n\n\n\nStep 2: Update and upgrade the system<\/h3>\n\n\n\n
$ sudo dnf makecache<\/mark>\nOracle Linux 9 BaseOS Latest (x86_64) 4.5 kB\/s | 3.6 kB 00:00 \nOracle Linux 9 Application Stream Packages (x86_64) 4.7 kB\/s | 3.6 kB 00:00 \nOracle Linux 9 UEK Release 7 (x86_64) 3.7 kB\/s | 3.0 kB 00:00 \nMetadata cache created.<\/code><\/pre>\n\n\n\nsudo dnf update<\/code><\/pre>\n\n\n\nsudo reboot<\/code><\/pre>\n\n\n\nStep 3: Set SELinux to permissive mode<\/h3>\n\n\n\n
$ sudo vim \/etc\/selinux\/config<\/mark>\n# This file controls the state of SELinux on the system.\n# SELINUX= can take one of these three values:\n# enforcing - SELinux security policy is enforced.\n# permissive - SELinux prints warnings instead of enforcing.\n# disabled - No SELinux policy is loaded.\n# See also:\n# https:\/\/docs.fedoraproject.org\/en-US\/quick-docs\/getting-started-with-selinux\/#getting-started-with-selinux-selinux-states-and-modes\n#\n# NOTE: In earlier Fedora kernel builds, SELINUX=disabled would also\n# fully disable SELinux during boot. If you need a system with SELinux\n# fully disabled instead of SELinux running with no policy loaded, you\n# need to pass selinux=0 to the kernel command line. You can use grubby\n# to persistently set the bootloader to boot with selinux=0:\n#\n# grubby --update-kernel ALL --args selinux=0\n#\n# To revert back to SELinux enabled:\n#\n# grubby --update-kernel ALL --remove-args selinux\n#\nSELINUX=permissive<\/mark>\n# SELINUXTYPE= can take one of these three values:\n# targeted - Targeted processes are protected,\n# minimum - Modification of targeted policy. Only selected processes are protected.\n# mls - Multi Level Security protection.\nSELINUXTYPE=targeted<\/code><\/pre>\n\n\n\nsudo reboot<\/code><\/pre>\n\n\n\nStep 4: Install KVM in Oracle Linux 9<\/h3>\n\n\n\n
sudo dnf remove libvirt qemu-kvm edk2<\/code><\/pre>\n\n\n\nsudo dnf install -y oraclelinux-release-el9\nsudo dnf config-manager --enable ol9_kvm_utils ol9_UEKR7<\/code><\/pre>\n\n\n\nsudo dnf groupinstall \"Virtualization Host\"<\/code><\/pre>\n\n\n\nInstalling Environment Groups:\n Virtualization Host \nInstalling Groups:\n Base \n Core \n Standard \n Virtualization Hypervisor \n Virtualization Tools \n\nTransaction Summary\n======================================================================================================================================================\nInstall 91 Packages\n\nTotal download size: 42 M\nInstalled size: 151 M\nIs this ok [y\/N]: y<\/mark>\n\nThe process may take a while to complete.\n======================================================================================================================================================<\/code><\/pre>\n\n\n\n$ lsmod | grep kvm\n<\/mark>\nkvm_intel 385024 0\nkvm 1118208 1 kvm_intel\nirqbypass 16384 1 kvm<\/code><\/pre>\n\n\n\n$ sudo dnf install qemu-kvm virt-install virt-viewer virt-manager<\/mark>\nTransaction Summary\n===================================================================================================================================================================================================================\nInstall 45 Packages\n\nTotal download size: 30 M\nInstalled size: 68 M\nIs this ok [y\/N]: <\/mark><\/strong>Y<\/mark><\/code><\/pre>\n\n\n\nStep 5: Start and Enable the KVM daemon<\/h3>\n\n\n\n
sudo systemctl start libvirtd<\/code><\/pre>\n\n\n\nsudo systemctl enable --now libvirtd<\/code><\/pre>\n\n\n\n$ systemctl status libvirtd<\/mark>\n\u25cf<\/mark> libvirtd.service - Virtualization daemon\n Loaded: loaded (\/usr\/lib\/systemd\/system\/libvirtd.service; enabled; vendor preset: disabled)\n Active: active (running)<\/mark> since Tue 2022-08-27 09:49:33 EAT; 2s ago\nTriggeredBy: \u25cf<\/mark> libvirtd-ro.socket\n \u25cb libvirtd-tls.socket\n \u25cf<\/mark> libvirtd-admin.socket\n \u25cb libvirtd-tcp.socket\n \u25cf <\/mark>libvirtd.socket\n Docs: man:libvirtd(8)\n https://libvirt.org\n Main PID: 79705 (libvirtd)\n Tasks: 20 (limit: 32768)\n Memory: 18.4M\n CPU: 1.196s\n CGroup: \/system.slice\/libvirtd.service\n \u2514\u250079705 \/usr\/sbin\/libvirtd<\/code><\/pre>\n\n\n\nStep 6: Configuring KVM on Oracle Linux 9<\/h3>\n\n\n\n
$ virsh pool-list <\/mark>\n Name State Autostart\n-------------------------------\n default active yes<\/code><\/pre>\n\n\n\n$ sudo virsh pool-dumpxml default | grep -i path<\/mark>\n <path<\/mark>>\/var\/lib\/libvirt\/images<\/path<\/mark>><\/code><\/pre>\n\n\n\nsudo mkdir -p \/opt\/kvm\/storage_pool-01<\/mark><\/code><\/pre>\n\n\n\n$ virsh pool-destroy default<\/mark>\nPool default destroyed<\/code><\/pre>\n\n\n\nsudo virsh pool-edit default<\/code><\/pre>\n\n\n\n<pool type='dir'>\n <name>default<\/mark><\/name>\n <uuid>c4701ef4-ab81-408c-8f01-ba9086f0c91b<\/uuid>\n <capacity unit='bytes'>0<\/capacity>\n <allocation unit='bytes'>0<\/allocation>\n <available unit='bytes'>0<\/available>\n <source>\n <\/source>\n <target>\n <path>\/opt\/kvm\/storage_pool-01<\/path><\/mark>\n <permissions>\n <mode>0711<\/mode>\n <owner>0<\/owner>\n <group>0<\/group>\n <label>system_u:object_r:virt_image_t:s0<\/label>\n <\/permissions>\n <\/target>\n<\/pool><\/code><\/pre>\n\n\n\n$ sudo virsh pool-start default<\/mark>\nPool default started\n\n$ sudo virsh pool-autostart default<\/mark>\nPool default marked as autostarted<\/code><\/pre>\n\n\n\n$ sudo virsh pool-dumpxml default | grep -i path<\/mark>\n \t<path<\/mark>>\/opt\/kvm\/storage_pool-01<\/path<\/mark>><\/code><\/pre>\n\n\n\nsudo systemctl restart libvirtd<\/code><\/pre>\n\n\n\nAdd your user to libvirt and KVM groups. <\/h4>\n\n\n\n
sudo usermod -a -G libvirt $(whoami)\nsudo usermod -a -G kvm $(whoami)<\/code><\/pre>\n\n\n\nDownload ISO images in Oracle Linux 9 KVM Host. <\/h4>\n\n\n\n
Step 7: Create VMs With KVM on Oracle Linux 9<\/h3>\n\n\n\n
sudo virt-install \\\n--virt-type kvm \\\n--name=MyLinux<\/mark> \\\n--vcpus=2 \\\n--memory=2048 \\\n--cdrom=\/opt\/kvm\/iso-images\/iso-file-name.iso<\/mark> \\\n--disk size=20 \\\n--network network=default \\\n--graphics vnc,listen=0.0.0.0 \\\n--noautoconsole \\\n--os-variant=generic<\/code><\/pre>\n\n\n\nStarting install...\nAllocating 'MyLinux<\/mark>-1.qcow2' | 20 GB 00:00:00 \n\nDomain is still running. Installation may be in progress.\nYou can reconnect to the console to complete the installation process.<\/code><\/pre>\n\n\n\n$ virsh list --all<\/mark>\n Id Name State\n---------------------------\n 3 Linuxmint running<\/code><\/pre>\n\n\n\n![\"\"](\"https:\/\/computingforgeeks.com\/wp-content\/uploads\/2025\/01\/complete-installation-of-kvm-vm-via-console-in-oracle-linux-9.webp\" "\\"\\"")
<\/figure>\n\n\n\n![\"\"](\"https:\/\/computingforgeeks.com\/wp-content\/uploads\/2025\/01\/finish-kvm-vm-installation-via-console-oracle-linux-9.webp\" "\\"\\"")
<\/figure>\n\n\n\nConclusion. <\/h3>\n\n\n\n
\n