Introduction

Wouldn't it be easier if you could build a VM with a YAML file? So, I have created a command called kvm-compose (pseudonym), so I would like to introduce it.

environment

--Centos 8 Minimal installed --Running on VirtualBox --Move with GUI from the middle --It works only with CLI by specifying a bridge that can access the outside.

Update, KVM installation

# dnf update -y
# dnf install -y wget 
# dnf module install -y virt
# dnf module install -y "Server with GUI"  (virt-When using viewer)
# dnf install -y virt-install virt-viewer git wget

Start libvirtd

# systemctl start libvirtd
# systemctl enable libvirtd

Download and configure `` `kvm-compose```

# git clone https://github.com/naoki2001/kvm-compose
# mkdir /compose/{ images , isos }
# wget http://ftp.riken.jp/Linux/centos/8/isos/x86_64/CentOS-8.2.2004-x86_64-minimal.iso
# mv CentOS-8.2.2004-x86_64-minimal.iso /compose/isos/
# startx  (virt-When using viewer)

Building a VM

# cd kvm-compose
# cat kvm-compose.yml

The following formats can work with kvm-compose (although we plan to increase it ...)

`kvm-compose.yml`


kvm:
  - name: test
    arch: x86_64
    os:
      - type: linux
        variant: rhel8.0
    vcpus: 1
    ram: 1024
    disk:
      - path: /conpose/images/test.img
        format: qcow2
        size: 8
    network:
      - bridge: virbr0
    location: /compose/isos/CentOS-8.2.2004-x86_64-minimal.iso
    extra-args: "console=tty0 console=ttyS0,115200n8"

Each item conforms to virt-install

# ./kvm-compose build

With this, virt-viewer will start in the GUI, so install the OS. For CLI, access with VNC.

kvm-compose -- kvm-compose is created in Go language based on the `virsh``` and `virt-install``` commands. ――What you can do

option	Description
build	kvm-compose.Load yml and build VM
build file.yml	file.Load yml and build VM
list	View running VMs
list --inactive	Cover of a non-started VM
list --all	View all VMs
start vm_name	vm_Start name. Start and then return to prompt
shutdown vm_name	vm_Shut down name. Return to prompt when you can confirm that the power is off
destroy vm_name	vm_Power off name. Return to prompt when you can confirm that the power is turned off

Caution

--If the kvm-compose command does not work Download the source code from https://github.com/naoki2001/kvm-compose-src and try compiling it according to the README.md.

Finally

I was able to build a VM for the time being. However, it is not easy to use, so I would like to improve it. If you find any typographical errors, typographical errors, or missing points, we would appreciate it if you could comment.