Vagrant : インストール2022/05/23

	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 ~]#

dnf -y install vagrant

[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

[fedora@dlp ~]$

vagrant box add generic/fedora35 --provider libvirt

==> box: Loading metadata for box 'generic/fedora35'
    box: URL: https://vagrantcloud.com/generic/fedora35
==> box: Adding box 'generic/fedora35' (v3.6.14) for provider: libvirt
    box: Downloading: https://vagrantcloud.com/generic/boxes/fedora35/versions/3.6.14/providers/libvirt.box
    box: Calculating and comparing box checksum...
==> box: Successfully added box 'generic/fedora35' (v3.6.14) for 'libvirt'!

# 初期化 (カレントパスに Vagrantfile が作成される)

[fedora@dlp ~]$

vagrant init generic/fedora35

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

[fedora@dlp ~]$

vagrant up

Bringing machine 'default' up with 'libvirt' provider...
==> default: Checking if box 'generic/fedora35' version '3.6.14' 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:              root_default
==> default:  -- Description:       Source: /root/Vagrantfile
==> default:  -- Domain type:       kvm
==> default:  -- Cpus:              2

.....
.....

    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

[fedora@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

[fedora@dlp ~]$

vagrant ssh


[vagrant@fedora35 ~]$ uname -a 
Linux fedora35.localdomain 5.16.20-200.fc35.x86_64 #1 SMP PREEMPT Wed Apr 13 22:09:20 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

[vagrant@fedora35 ~]$ exit

# 仮想マシン停止

[fedora@dlp ~]$

vagrant halt

==> default: Halting domain...

# 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

[fedora@dlp ~]$

vi Vagrantfile

# 例として CPU 数とメモリー容量を変更
# 57 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