OpenStack Ussuri : Nova 設定 #22020/06/05

OpenStack Compute Service（Nova）をインストールします。

当例では以下のような環境に Nova API サービスをインストールします。

        eth0|10.0.0.30 
+-----------+-----------+
|    [ Control Node ]   |
|                       |
|  MariaDB    RabbitMQ  |
|  Memcached  httpd     |
|  Keystone   Glance    |
|  Nova API             |
+-----------------------+

[1]	Nova をインストールします。

# Ussuri, EPEL, powertools からインストール

[root@dlp ~(keystone)]#

dnf --enablerepo=centos-openstack-ussuri,powertools,epel -y install openstack-nova openstack-placement-api

[2]	Nova の基本設定です。

[root@dlp ~(keystone)]#

mv /etc/nova/nova.conf /etc/nova/nova.conf.org

[root@dlp ~(keystone)]#

vi /etc/nova/nova.conf

# 新規作成

[DEFAULT]
# 自ホストの IP アドレス
my_ip = 10.0.0.30
state_path = /var/lib/nova
enabled_apis = osapi_compute,metadata
log_dir = /var/log/nova
# RabbitMQ サーバー接続情報
transport_url = rabbit://openstack:password@10.0.0.30

[api]
auth_strategy = keystone

# Glance サーバーを指定
[glance]
api_servers = http://10.0.0.30:9292

[oslo_concurrency]
lock_path = $state_path/tmp

# MariaDB サーバー接続情報
[api_database]
connection = mysql+pymysql://nova:password@10.0.0.30/nova_api

[database]
connection = mysql+pymysql://nova:password@10.0.0.30/nova

# Keystone サーバー接続情報
[keystone_authtoken]
www_authenticate_uri = http://10.0.0.30:5000
auth_url = http://10.0.0.30:5000
memcached_servers = 10.0.0.30:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = nova
password = servicepassword

[placement]
auth_url = http://10.0.0.30:5000
os_region_name = RegionOne
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = placement
password = servicepassword

[wsgi]
api_paste_config = /etc/nova/api-paste.ini

[root@dlp ~(keystone)]#

chmod 640 /etc/nova/nova.conf

[root@dlp ~(keystone)]#

chgrp nova /etc/nova/nova.conf

[root@dlp ~(keystone)]#

mv /etc/placement/placement.conf /etc/placement/placement.conf.org

[root@dlp ~(keystone)]#

vi /etc/placement/placement.conf

# 新規作成

[DEFAULT]
debug = false

[api]
auth_strategy = keystone

[keystone_authtoken]
www_authenticate_uri = http://10.0.0.30:5000
auth_url = http://10.0.0.30:5000
memcached_servers = 10.0.0.30:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = placement
password = servicepassword

[placement_database]
connection = mysql+pymysql://placement:password@10.0.0.30/placement

[root@dlp ~(keystone)]#

chmod 640 /etc/placement/placement.conf

[root@dlp ~(keystone)]#

chgrp placement /etc/placement/placement.conf

[root@dlp ~(keystone)]#

vi /etc/httpd/conf.d/00-placement-api.conf

# 15行目あたりに追記

  <Directory /usr/bin>
    Require all granted
  </Directory>

</VirtualHost>

[3]	SELinux を有効にしている場合は、ポリシーの変更が必要です。

[root@dlp ~(keystone)]#

dnf --enablerepo=centos-openstack-ussuri -y install openstack-selinux

[root@dlp ~(keystone)]#

semanage port -a -t http_port_t -p tcp 8778

[4]	Firewalld を有効にしている場合は、サービスポートの許可が必要です。

[root@dlp ~(keystone)]#

firewall-cmd --add-port={6080/tcp,6081/tcp,6082/tcp,8774/tcp,8775/tcp,8778/tcp} --permanent

success
[root@dlp ~(keystone)]#

firewall-cmd --reload

success

[5]	データベースにデータを追加して Nova をサービス起動します。なお、データ投入の際に表示される deprecated ～な Warning メッセージは気にする必要はありません。

[root@dlp ~(keystone)]#

su -s /bin/bash placement -c "placement-manage db sync"

[root@dlp ~(keystone)]#

su -s /bin/bash nova -c "nova-manage api_db sync"

[root@dlp ~(keystone)]#

su -s /bin/bash nova -c "nova-manage cell_v2 map_cell0"

[root@dlp ~(keystone)]#

su -s /bin/bash nova -c "nova-manage db sync"

[root@dlp ~(keystone)]#

su -s /bin/bash nova -c "nova-manage cell_v2 create_cell --name cell1"

[root@dlp ~(keystone)]#

systemctl restart httpd

[root@dlp ~(keystone)]#

chown placement. /var/log/placement/placement-api.log

[root@dlp ~(keystone)]#

for service in api conductor scheduler novncproxy; do
systemctl enable --now openstack-nova-$service
done

# 動作確認

[root@dlp ~(keystone)]#

openstack compute service list

+----+----------------+---------------+----------+---------+-------+----------------------------+
| ID | Binary         | Host          | Zone     | Status  | State | Updated At                 |
+----+----------------+---------------+----------+---------+-------+----------------------------+
|  5 | nova-conductor | dlp.srv.world | internal | enabled | up    | 2020-06-04T17:00:25.000000 |
|  7 | nova-scheduler | dlp.srv.world | internal | enabled | up    | 2020-06-04T17:00:23.000000 |
+----+----------------+---------------+----------+---------+-------+----------------------------+