Vagrant : インストール2022/09/01

	VirtualBox 等の仮想化ソフトウェアのラッパーツール Vagrant をインストールします。主要な仮想化ソフトウェアには概ね対応していますが、当例では Libvirt インストール済みを前提とします。
[1]	Vagrant をインストールしておきます。

root@dlp:~#

apt -y install vagrant-libvirt

[2]	Vagrant の基本操作です。任意の一般ユーザーで利用可能です。

# 仮想マシンイメージをダウンロードして追加
# ダウンロード可能な Box は公式サイト参照
# ⇒ https://app.vagrantup.com/boxes/search

ubuntu@dlp:~$

vagrant box add generic/ubuntu2004 --provider libvirt

==> box: Loading metadata for box 'generic/ubuntu2004'
    box: URL: https://vagrantcloud.com/generic/ubuntu2004
==> box: Adding box 'generic/ubuntu2004' (v4.1.10) for provider: libvirt
    box: Downloading: https://vagrantcloud.com/generic/boxes/ubuntu2004/versions/4.1.10/providers/libvirt.box
    box: Calculating and comparing box checksum...
==> box: Successfully added box 'generic/ubuntu2004' (v4.1.10) for 'libvirt'!

# 初期化 (カレントパスに Vagrantfile が作成される)

ubuntu@dlp:~$

vagrant init generic/ubuntu2004

A `Vagrantfile` has been placed in this directory. You are now
ready to `vagrant up` your first virtual environment! Please read
the comments in the Vagrantfile as well as documentation on
`vagrantup.com` for more information on using Vagrant.

# 仮想マシン起動

ubuntu@dlp:~$

vagrant up

Bringing machine 'default' up with 'libvirt' provider...
==> default: Checking if box 'generic/ubuntu2004' version '4.1.10' is up to date...
==> default: Uploading base box image as volume into Libvirt storage...
==> default: Creating image (snapshot of base box volume).
==> default: Creating domain with the following settings...
==> default:  -- Name:              ubuntu_default
==> default:  -- Description:       Source: /home/ubuntu/Vagrantfile
==> default:  -- Domain type:       kvm
==> default:  -- Cpus:              2
==> default:  -- Feature:           acpi
==> default:  -- Feature:           apic
==> default:  -- Feature:           pae
==> default:  -- Clock offset:      utc
==> default:  -- Memory:            2048M
==> default:  -- Management MAC:
==> default:  -- Loader:
==> default:  -- Nvram:
==> default:  -- Base box:          generic/ubuntu2004
==> default:  -- Storage pool:      default
==> default:  -- Image():     /var/lib/libvirt/images/ubuntu_default.img, 128G
==> default:  -- Disk driver opts:  cache='default'
==> default:  -- Kernel:
==> default:  -- Initrd:
==> default:  -- Graphics Type:     vnc
==> default:  -- Graphics Port:     -1
==> default:  -- Graphics IP:       127.0.0.1
==> default:  -- Graphics Password: Not defined
==> default:  -- Video Type:        cirrus
==> default:  -- Video VRAM:        256
==> default:  -- Video 3D accel:    false
==> default:  -- Sound Type:
==> default:  -- Keymap:            en-us
==> default:  -- TPM Backend:       passthrough
==> default:  -- TPM Path:
==> default:  -- INPUT:             type=mouse, bus=ps2
==> default: Creating shared folders metadata...
==> default: Starting domain.
==> default: Waiting for domain to get an IP address...
==> default: Waiting for machine to boot. This may take a few minutes...
    default: SSH address: 192.168.121.97:22
    default: SSH username: vagrant
    default: SSH auth method: private key
    default: Warning: Connection refused. Retrying...
    default:
    default: Vagrant insecure key detected. Vagrant will automatically replace
    default: this with a newly generated keypair for better security.
    default:
    default: Inserting generated public key within guest...
    default: Removing insecure key from the guest if it's present...
    default: Key inserted! Disconnecting and reconnecting using new SSH key...
==> default: Machine booted and ready!

# 仮想マシンの状態

ubuntu@dlp:~$

vagrant status

Current machine states:

default                   running (libvirt)

The Libvirt domain is running. To stop this machine, you can run
`vagrant halt`. To destroy the machine, you can run `vagrant destroy`.

# 仮想マシンへ SSH で接続

ubuntu@dlp:~$

vagrant ssh


vagrant@ubuntu2004:~$ uname -a 
Linux ubuntu2004.localdomain 5.4.0-125-generic #141-Ubuntu SMP Wed Aug 10 13:42:03 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

vagrant@ubuntu2004:~$ exit

# 仮想マシン停止

ubuntu@dlp:~$

vagrant halt

==> default: Attempting graceful shutdown of VM...

# 仮想マシンの設定を変更したい場合は設定ファイルを編集

ubuntu@dlp:~$

vi Vagrantfile

# 例として CPU 数とメモリー容量を変更
# 52 行目から以下のようにコメント解除して値を変更

  config.vm.provider "virtualbox" do |vb|
  #   # Display the VirtualBox GUI when booting the machine
  #   vb.gui = true
  #
  #   # Customize the amount of memory on the VM:
     vb.memory = "4096"
     vb.cpus = 2
  end