OpenStack Flamingo : ストレージを利用する (マルチバックエンド)2025/11/25 |
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仮想マシンインスタンスには一定容量のディスクは割り当てられていますが、 ディスクが足りなくなった場合やデータは別で保管しておきたい場合等は、 Cinder が提供するブロックストレージ機能を利用することができます。 当例ではバックエンドとして LVM および NFS のマルチバックエンド構成で設定します。
------------+--------------------------+--------------------------+------------
| | |
eth0|10.0.0.30 eth0|10.0.0.50 eth0|10.0.0.51
+-----------+-----------+ +-----------+-----------+ +-----------+-----------+
| [ dlp.srv.world ] | | [ network.srv.world ] | | [ node01.srv.world ] |
| (Control Node) | | (Network Node) | | (Compute Node) |
| | | | | |
| MariaDB RabbitMQ | | Open vSwitch | | Libvirt |
| Memcached Nginx | | Neutron Server | | Nova Compute |
| Keystone httpd | | OVN-Northd | | Open vSwitch |
| Glance Nova API | | Nginx iSCSI Target | | OVN Metadata Agent |
| Cinder API | | Cinder Volume | | OVN-Controller |
+-----------------------+ +-----------------------+ +-----------------------+
-----------+-------------------------------------------------------------------
eth0|10.0.0.35
+----------+-----------+
| [ nfs.srv.world ] |
| NFS Server |
+----------------------+
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| [1] |
当例では Storage ノード上の [vg_volume01] という名称のボリュームグループを利用して LVM バックエンドを設定します。 |
| [2] |
こちらを参考にローカルネットワーク内に NFS サーバーを稼働させておきます。 |
| [3] | Storage ノードの設定です。 |
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root@network:~#
apt -y install nfs-common
root@network:~#
vi /etc/idmapd.conf # 5行目 : コメント解除して自ドメイン名に変更 Domain = srv.world
root@network:~#
vi /etc/cinder/cinder.conf # [enabled_backends] の値を追記 enabled_backends = lvm,nfs # 最終行へ追記 [lvm] target_helper = lioadm target_protocol = iscsi target_ip_address = $my_ip volume_backend_name = LVM # 作成したボリュームグループ名 volume_group = vg_volume01 volume_driver = cinder.volume.drivers.lvm.LVMVolumeDriver volumes_dir = $state_path/volumes [nfs] volume_driver = cinder.volume.drivers.nfs.NfsDriver volume_backend_name = NFS nfs_shares_config = /etc/cinder/nfs_shares nfs_mount_point_base = $state_path/mnt_nfs
root@storage:~#
vi /etc/cinder/nfs_shares # 新規作成 : NFS 共有ディレクトリを指定 # 複数設定する場合は 1行ずつ記述 nfs.srv.world:/var/lib/nfs-share chmod 640 /etc/cinder/nfs_shares root@network:~# chgrp cinder /etc/cinder/nfs_shares root@network:~# systemctl restart cinder-volume root@network:~# chown -R cinder:cinder /var/lib/cinder/mnt_nfs
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| [4] | Compute ノードの設定を変更します。 |
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root@node01:~#
apt -y install nfs-common
root@node01:~#
vi /etc/idmapd.conf # 5行目 : コメント解除して自ドメイン名に変更 Domain = srv.world
root@node01:~#
vi /etc/nova/nova.conf # 最終行へ追記 [service_user] send_service_user_token = true auth_url = https://dlp.srv.world:5000 auth_type = password project_domain_name = Default user_domain_name = Default project_name = service username = nova password = servicepassword insecure = false [cinder] os_region_name = RegionOneroot@node01:~# systemctl restart nova-compute
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| [5] | ボリュームタイプを作成します。作業場所はどこでもよいですが、当例では Control ノード上で行います。 |
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# 事前に環境変数を設定 root@dlp ~(keystone)# echo "export OS_VOLUME_API_VERSION=3" >> ~/keystonerc root@dlp ~(keystone)# source ~/keystonerc
openstack volume type create lvm +-------------+--------------------------------------+ | Field | Value | +-------------+--------------------------------------+ | description | None | | id | 3523a443-d971-40ea-a1ee-aa4cfad4593d | | is_public | True | | name | lvm | +-------------+--------------------------------------+root@dlp ~(keystone)# openstack volume type create nfs +-------------+--------------------------------------+ | Field | Value | +-------------+--------------------------------------+ | description | None | | id | 6b028b88-3ece-4331-b362-71c3ee121df5 | | is_public | True | | name | nfs | +-------------+--------------------------------------+root@dlp ~(keystone)# openstack volume type list +--------------------------------------+-------------+-----------+ | ID | Name | Is Public | +--------------------------------------+-------------+-----------+ | 6b028b88-3ece-4331-b362-71c3ee121df5 | nfs | True | | 3523a443-d971-40ea-a1ee-aa4cfad4593d | lvm | True | | 22e3a89a-740b-40a2-80eb-a0e9006705bb | __DEFAULT__ | True | +--------------------------------------+-------------+-----------+ |
| [6] | インスタンスにボリュームを追加したい任意のユーザーで作業します。 ボリュームタイプを指定して任意の名称のボリュームを作成します。 |
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# 事前に環境変数を設定 ubuntu@dlp ~(keystone)$ echo "export OS_VOLUME_API_VERSION=3" >> ~/keystonerc ubuntu@dlp ~(keystone)$ source ~/keystonerc
openstack volume create --type lvm --size 10 disk-lvm +--------------------------------+--------------------------------------+ | Field | Value | +--------------------------------+--------------------------------------+ | attachments | [] | | availability_zone | nova | | bootable | False | | cluster_name | None | | consumes_quota | None | | created_at | 2025-11-25T00:48:02.234962 | | description | None | | encrypted | False | | group_id | None | | id | 053b6b5b-ecc7-4a32-85b0-f028ff3d52bf | | multiattach | False | | name | disk-lvm | | os-vol-host-attr:host | None | | os-vol-mig-status-attr:migstat | None | | os-vol-mig-status-attr:name_id | None | | os-vol-tenant-attr:tenant_id | None | | properties | | | provider_id | None | | replication_status | None | | service_uuid | None | | shared_targets | None | | size | 10 | | snapshot_id | None | | source_volid | None | | status | creating | | type | lvm | | updated_at | None | | user_id | 8fb39b6516284abe94f287d259b160b6 | | volume_type_id | None | +--------------------------------+--------------------------------------+ubuntu@dlp ~(keystone)$ openstack volume create --type nfs --size 10 disk-nfs +--------------------------------+--------------------------------------+ | Field | Value | +--------------------------------+--------------------------------------+ | attachments | [] | | availability_zone | nova | | bootable | False | | cluster_name | None | | consumes_quota | None | | created_at | 2025-11-25T00:48:21.791915 | | description | None | | encrypted | False | | group_id | None | | id | 79979d66-fac0-4f25-a308-2f63ed23050a | | multiattach | False | | name | disk-nfs | | os-vol-host-attr:host | None | | os-vol-mig-status-attr:migstat | None | | os-vol-mig-status-attr:name_id | None | | os-vol-tenant-attr:tenant_id | None | | properties | | | provider_id | None | | replication_status | None | | service_uuid | None | | shared_targets | None | | size | 10 | | snapshot_id | None | | source_volid | None | | status | creating | | type | nfs | | updated_at | None | | user_id | 8fb39b6516284abe94f287d259b160b6 | | volume_type_id | None | +--------------------------------+--------------------------------------+ubuntu@dlp ~(keystone)$ openstack volume list +----------------------------------+----------+-----------+------+-------------+ | ID | Name | Status | Size | Attached to | +----------------------------------+----------+-----------+------+-------------+ | 79979d66-fac0-4f25-a308- | disk-nfs | available | 10 | | | 2f63ed23050a | | | | | | 053b6b5b-ecc7-4a32-85b0- | disk-lvm | available | 10 | | | f028ff3d52bf | | | | | +----------------------------------+----------+-----------+------+-------------+ |
| [7] | 作成したボリュームをインスタンスに接続します。 |
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ubuntu@dlp ~(keystone)$ openstack server list +--------------+-------------+---------+--------------+------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------+-------------+---------+--------------+------------+----------+ | 38617807- | Ubuntu-2404 | SHUTOFF | private=10.0 | Ubuntu2404 | m1.small | | e027-4d1f- | | | .0.221, 192. | | | | 9320- | | | 168.100.176 | | | | c94d4d05bb8a | | | | | | +--------------+-------------+---------+--------------+------------+----------+
ubuntu@dlp ~(keystone)$
openstack server add volume Ubuntu-2404 disk-lvm ubuntu@dlp ~(keystone)$ openstack server add volume Ubuntu-2404 disk-nfs
# 接続された仮想ディスクは [in-use] ステータスになる ubuntu@dlp ~(keystone)$ openstack volume list +-------------------------+----------+--------+------+-------------------------+ | ID | Name | Status | Size | Attached to | +-------------------------+----------+--------+------+-------------------------+ | 79979d66-fac0-4f25- | disk-nfs | in-use | 10 | Attached to Ubuntu-2404 | | a308-2f63ed23050a | | | | on /dev/vdc | | 053b6b5b-ecc7-4a32- | disk-lvm | in-use | 10 | Attached to Ubuntu-2404 | | 85b0-f028ff3d52bf | | | | on /dev/vdb | +-------------------------+----------+--------+------+-------------------------+ # 接続した仮想ディスクを接続解除する場合は以下 ubuntu@dlp ~(keystone)$ openstack server remove volume Ubuntu-2404 disk-lvm ubuntu@dlp ~(keystone)$ openstack server remove volume Ubuntu-2404 disk-nfs |
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