JuJu+MaasでOpenStackをデプロイしてみる。
今回はUbuntuサーバに、KVMをれ入れて下記の５VMを立てて検証してみる。

Maasとは、Metal-as-a-Serviceでベアメタルを提供するサービス

$ sudo apt -y update
$ sudo apt -y upgrade

$ sudo apt install maas

$ sudo maas init
[sudo] password for matsui:

Note: Configuring the MAAS snap in "all" mode will be
deprecated in MAAS 2.8.0 and removed in 2.9.0.

See https://maas.io/deprecations/MD1 for details.


Mode (all/region+rack/region/rack/none) [default=all]?
MAAS URL [default=http://192.168.0.110:5240/MAAS]:
Create first admin account
Username: admin
Password:
Again:
Email: hoge@hogehoge.com
Import SSH keys [] (lp:user-id or gh:user-id):

これでhttp://192.168.0.110:5240/MAASからUIにアクセスできる。

• ログイン後、Ubuntu imageで20.04 LTSを選択し、Update selectionをクリック
• SSH keyをアップロードしておく
• Subnetsから、192.168.0.0/24ネットワークを選んでDHCPを有効にしておく

JujuはCanonical社が提供するプロビジョニングツール
JuJuはMaasに接続して、MaasのMetalサーバを利用し様々なアプリケーションをデプロイする。

sudo snap install juju --classic

$ vim mymaas.yaml
clouds:
   maas-server:
      type: maas
      auth-types: [oauth1]
      endpoint: http://192.168.0.110:5240/MAAS

juju add-cloud maas-server mymaas.yaml

$ juju add-credential maas-server
This operation can be applied to both a copy on this client and to the one on a controller.
No current controller was detected and there are no registered controllers on this client: either bootstrap one or register one.
Enter credential name: maas-server-credential

Regions
  default

Select region [any region, credential is not region specific]:

Using auth-type "oauth1".

Enter maas-oauth:

Credential "maas-server-credential" added locally for cloud "maas-server".

http://192.168.0.110:5240/MAAS/r/account/prefs/api-keys

credentialが見えればOK

$ juju credentials
No credentials from any controller to display.

Client Credentials:
Cloud        Credentials
maas-server  maas-server-credential

matsui@maasvm2:~$ juju clouds
Only clouds with registered credentials are shown.
There are more clouds, use --all to see them.
You can bootstrap a new controller using one of these clouds...

Clouds available on the client:
Cloud        Regions  Default    Type  Credentials  Source    Description
localhost    1        localhost  lxd   0            built-in  LXD Container Hypervisor
maas-server  1        default    maas  1            local     Metal As A Service