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JuJu（魔法）を使って、MAAS(Metal as a Service)を動かし、さまざまなサービスモデルを作ることができる。
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。
| hostname | external | internal | tag |
|---|---|---|---|
| MAAS | 192.168.0.10 | 10.10.0.10 | |
| juju-controller | DHCP | bootstrap | |
| node01 | DHCP | node01 | |
| node02 | DHCP | node02 | |
| node03 | DHCP | node03 |
| Nic | PXE | Network | DHCP | Gateway | Space |
|---|---|---|---|---|---|
| ens3 | ○ | 192.168.0.0/24 | MAAS-DHCP | 192.168.0.254 | internal |
| ens4 | 10.10.0.0/24 | No DHCP | 10.10.0.254 | external | |
| ens4.50 | 100.100.100.0/24 | No DHCP | 100.100.100.254 | global |
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://192.168.0.10:5240/MAAS]: Create first admin account Username: admin Password: Again: Email: hoge@hogehoge.com Import SSH keys [] (lp:user-id or gh:user-id):gh:flateight
「Import SSH keys」でLaunchPadかGithubの公開鍵をインポートできる。
この場合flateightの公開鍵をインポートしてみました。
SSH公開鍵は後で設定可能なので、省略可能です。
これでhttp://192.168.0.10:5240/MAASからUIにアクセスできる。
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://192.168.0.10:5240/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".
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
juju からの命令を受けて処理するノード
デプロイには結構時間がかかる。
$ juju bootstrap --constraints tags=bootstrap maas-server maas Creating Juju controller "maas" on maas-server/default Looking for packaged Juju agent version 2.9.22 for amd64 Located Juju agent version 2.9.22-ubuntu-amd64 at https://streams.canonical.com/juju/tools/agent/2.9.22/juju-2.9.22-ubuntu-amd64.tgz Launching controller instance(s) on maas-server/default... - 4t8t4s (arch=amd64 mem=16G cores=8) Installing Juju agent on bootstrap instance Fetching Juju Dashboard 0.8.1 Waiting for address Attempting to connect to 192.168.0.251:22 Connected to 192.168.0.251 Running machine configuration script... Bootstrap agent now started Contacting Juju controller at 192.168.0.251 to verify accessibility... Bootstrap complete, controller "maas" is now available Controller machines are in the "controller" model Initial model "default" added
charmはgit みたいなもので、charm(魔力)の意味らしい
charm(魔力)を使ってJuJu(魔法)でMAAS(Metal as a Server)を動かすという事らしい
$ sudo snap install charm --classic [sudo] password for matsui: charm 2.8.2 from Canonical✓ installed
charm pull openstack-base ~/openstack-base ### charm pull specific version charm pull openstack-base-73 ~/openstack-base-73
data-portと、osd-devicesとノード情報だけ変更しました。
$ cd ~/openstack-base
$ vi bundle.yaml
series: focal
variables:
openstack-origin: &openstack-origin cloud:focal-xena
data-port: &data-port br-ex:ens4
worker-multiplier: &worker-multiplier 0.25
osd-devices: &osd-devices /dev/vda
expected-osd-count: &expected-osd-count 3
expected-mon-count: &expected-mon-count 3
machines:
'0':
constraints: "arch=amd64 tags=node01"
'1':
constraints: "arch=amd64 tags=node02"
'2':
constraints: "arch=amd64 tags=node03"
.
.
.
.
.
$ juju deploy ./bundle.yaml
後は待ってればOK
$ watch -c juju status --color
待っていると下記のようにvaultのところがblockedで止まってしまう。
これはvaultの初期化が必要ので、シェルを実行して初期化する。
vault/0* blocked idle 0/lxd/6 10.108.0.16 8200/tcp Vault needs to be initialized vault-mysql-router/0* active idle 10.108.0.16 Unit is ready
下記でvault初期化の一連の流れを実行する
$ git clone https://github.com/flateight/juju-openstack-base.git $ cd juju-openstack-base/ $ bash vault.sh
$ sudo snap install openstackclients --classic
$ source openrc
$ curl http://cloud-images.ubuntu.com/focal/current/focal-server-cloudimg-amd64.img | openstack image create --public --container-format=bare --disk-format=qcow2 focal
openstack network create --external --provider-network-type flat --provider-physical-network physnet1 ext_net openstack subnet create --subnet-range 10.10.0.0/16 --no-dhcp --gateway 10.10.0.254 --network ext_net --allocation-pool start=10.10.100.100,end=10.10.100.250 ext
openstack network create internal openstack subnet create --network internal --subnet-range 198.52.100.0/24 --dns-nameserver 8.8.8.8 internal_subnet
内部ネットワーク(internal)から外部ネットワーク(external)へ抜ける共用ルータ
openstack router create provider-router openstack router set --external-gateway ext_net provider-router openstack router add subnet provider-router internal_subnet
VLAN:50のGlobalネットワークも追加しておく
※これは、直接VMにGlobalネットワークを割り当てる場合のネットワーク
openstack network create --external --provider-network-type vlan --provider-segment 50 --provider-physical-network physnet1 ext_net_50 openstack subnet create --network ext_net_50 --subnet-range 100.100.100.0/24 --gateway 100.100.100.254 --dns-nameserver 8.8.8.8 ext402
openstack flavor create --vcpus 2 --ram 2048 --disk 20 m2.small
mkdir -p ~/.ssh touch ~/.ssh/id_rsa_cloud chmod 600 ~/.ssh/id_rsa_cloud openstack keypair create mykey > ~/.ssh/id_rsa_cloud
openstack server create --image focal --flavor m2.small --key-name mykey --network internal focal-testvm
FIP=$(openstack floating ip create -f value -c floating_ip_address ext_net) openstack server add floating ip focal-test $FIP
PROJECT_ID=$(openstack project list -f value -c ID --domain admin_domain)
SECGRP_ID=$(openstack security group list --project $PROJECT_ID | awk '/default/{print$2}')
openstack security group rule create $SECGRP_ID --protocol icmp --ingress --ethertype IPv4
openstack security group rule create $SECGRP_ID --protocol icmp --ingress --ethertype IPv6
openstack security group rule create $SECGRP_ID --protocol tcp --ingress --ethertype IPv4 --dst-port 22
openstack security group rule create $SECGRP_ID --protocol tcp --ingress --ethertype IPv6 --dst-port 22
ssh -i ~/.ssh/id_rsa_cloud ubuntu@$FIP
下記でopenstack-dashboardのIP確認
$ juju status openstack-dashboard openstack-dashboard/0* active idle 1/lxd/4 192.168.0.217 80/tcp,443/tcp Unit is ready dashboard-mysql-router/0* active idle 192.168.0.217 Unit is ready
こちらでアクセス可能です。
URL: http://192.168.0.217/horizon/
ドメイン：admin_domain
ユーザ名：admin
パスワードは下記のコマンドで確認できる。
juju run --unit keystone/leader leader-get admin_passwd
