![]() The above configuration should be saved in some directory under the name user-data. sudo apt install whoisĪnd then you can generate a password hash, for example, like this: echo -ne "clurgo" | mkpasswd -method=SHA-512 -stdinĭon’t worry if this command returns a different result every time – this is the expected behavior ( link). If it is not installed by default, it can be found in the package whois. ![]() This can be generated in several ways, but the simplest method is to use the mkpasswd command. The value SOME_HASHED_PASS, as the name suggests, contains the hashed password that the created user will receive. The minimum configuration necessary for a basic system installation looks like this: #cloud-config There is of course the possibility of using debian preseed (Ubuntu is a mutated Debian), however the autoinstall mentioned above will be more friendly. Now it’s time to prepare the automatic installation configuration. We will create a 10GB file which will be our virtual disk for the machine. We will start by preparing the “place” where the system will be installed. We will create a virtual machine with Ubuntu Server 20.04, so in this case we can use the autoinstall tool. There are two ways to do this – you can do it manually using virt-manager or use an automated solution. You have successfully prepared the environment, so you can move on to setting up a virtual machine. virt-manager is a window-based virtual machine managerįinally, the user should be added to the groups kvm and libvirt: sudo usermod -aG libvirt $(whoami)įor the above commands to take effect, you must log out and log back in.virtinst contains a package of commands to manage virtual machines.bridge-utils is used to configure bridges that allow network communication.libvirt-clients allows you to manage virtualization platforms.libvirt-daemon-system adds configuration files to run the service on your system.quemu-kvm is used to support KVM hardware virtualization.The next step to perform is to install the following packages: sudo apt install qemu-kvm libvirt-daemon-system libvirt-clients bridge-utils virtinst virt-manager If everything is configured correctly, when you run the kvm-ok command, you should see more or less this message: INFO: /dev/kvm exists This is done with the kvm-ok command, which becomes available after installing the package cpu-checker: sudo apt install cpu-checker The next step is to check whether the processor supports hardware virtualization. There is no one way to do it – it’s worth checking in the manual or on the manufacturer’s website. If it returns 0, you have to check in BIOS settings if virtualization is enabled. In my case, the command returned 16, which is the number of CPU cores. Use the following command to do this: grep -Eoc '(vmx|svm)' /proc/cpuinfo The first step is to verify if the processor supports virtualization technology. It currently supports DMI (x86 and IA-64 only), OpenFirmware device tree (PowerPC only), PCI/AGP, CPUID (x86), IDE/ATA/ATAPI, PCMCIA (only tested on x86), SCSI and USB.15 March 2021 Installing KVM on Ubuntu 20.04 Linux on DMI-capable x86 or IA-64 systems and on some PowerPC machines (PowerMac G4 is known to work). It can report exact memory configuration, firmware version, mainboard configuration, CPU version and speed, cache configuration, bus speed, etc. lshw is a small tool to extract detailed information on the hardware configuration of the machine. Know more about inxi command – Click Here inxi shows system hardware, CPU, drivers, Xorg, Desktop, Kernel, GCC version(s), Processes, RAM usage, and a wide variety of other useful information. It is also used for forum technical support, as a debugging tool, to quickly ascertain user system configuration and hardware. inxi is a command line system information script built for for console and IRC. The primary purpose of inxi is for support, and sys admin use. ![]() It is available in most Linux distribution repositories, and also runs somewhat on BSDs. Inxi is a full featured CLI system information tool. The cpuinfo shows a detail information about the CPU. Most of it is read-only, but some files allow kernel variables to be changed. The proc filesystem is a pseudo-filesystem which provides an interface to kernel data structures. Proc is the process information pseudo-filesystem. There is also information about the CPU caches and cache sharing, family, model, bogoMIPS, byte order, and stepping. The information includes, for example, the number of CPUs, threads, cores, sockets, and Non-Uniform Memory Access (NUMA) nodes.
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