OpenStack Flamingo : Use Cinder Storage (NFS)2025/11/25 |
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It's possible to use Virtual Storages provided by Cinder if an Instance needs more disks. Configure Virtual storage with NFS backend on here.
------------+--------------------------+--------------------------+------------
| | |
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] |
NFS server is required to be running on your local network, refer to here. |
| [2] | Configure Storage Node. |
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root@network:~#
apt -y install nfs-common
root@network:~#
vi /etc/idmapd.conf # line 5 : uncomment and change to your domain name Domain = srv.world
root@network:~#
vi /etc/cinder/cinder.conf # add the value to [enabled_backends] param enabled_backends = nfs
# add to last line [nfs] volume_driver = cinder.volume.drivers.nfs.NfsDriver nfs_shares_config = /etc/cinder/nfs_shares nfs_mount_point_base = $state_path/mnt
root@network:~#
vi /etc/cinder/nfs_shares # create new : specify NFS shared directory # if set multiple share, write one per line nfs.srv.world:/var/lib/nfs-share chmod 640 /etc/cinder/nfs_shares root@network:~# chgrp cinder /etc/cinder/nfs_shares root@network:~# systemctl restart cinder-volume root@network:~# chown -R cinder:cinder /var/lib/cinder/mnt
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| [3] | Change Nova settings on Compute Node to mount NFS. |
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root@node01:~#
apt -y install nfs-common
root@node01:~#
vi /etc/idmapd.conf # line 5 : uncomment and change to your domain name Domain = srv.world
root@node01:~#
vi /etc/nova/nova.conf # add to last line [service_user] send_service_user_token = true auth_url = https://dlp.srv.world:5000 auth_type = password project_domain_name = Default user_domain_name = Default project_name = service username = nova password = servicepassword insecure = false [cinder] os_region_name = RegionOneroot@node01:~# systemctl restart nova-compute
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| [4] | Login as a common user you'd like to add volumes to own instances. For example, create a virtual disk [disk01] with 10GB. It's OK to work on any node. (example below is on Control Node) |
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# set environment variable ubuntu@dlp ~(keystone)$ echo "export OS_VOLUME_API_VERSION=3" >> ~/keystonerc ubuntu@dlp ~(keystone)$ source ~/keystonerc
openstack volume create --size 10 disk01 +--------------------------------+--------------------------------------+ | Field | Value | +--------------------------------+--------------------------------------+ | attachments | [] | | availability_zone | nova | | bootable | False | | cluster_name | None | | consumes_quota | None | | created_at | 2025-11-25T00:41:44.795333 | | description | None | | encrypted | False | | group_id | None | | id | 61d266bf-422c-41eb-9f5b-c3db433b0b6e | | multiattach | False | | name | disk01 | | 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 | __DEFAULT__ | | updated_at | None | | user_id | 8fb39b6516284abe94f287d259b160b6 | | volume_type_id | None | +--------------------------------+--------------------------------------+ubuntu@dlp ~(keystone)$ openstack volume list +------------------------------------+--------+-----------+------+-------------+ | ID | Name | Status | Size | Attached to | +------------------------------------+--------+-----------+------+-------------+ | 61d266bf-422c-41eb-9f5b- | disk01 | available | 10 | | | c3db433b0b6e | | | | | +------------------------------------+--------+-----------+------+-------------+ |
| [5] | Attach the virtual disk to an Instance. For the example below, the disk is connected as [/dev/vdb]. It's possible to use it as a storage to create a file system on it. |
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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 disk01 +-----------------------+--------------------------------------+ | Field | Value | +-----------------------+--------------------------------------+ | ID | 61d266bf-422c-41eb-9f5b-c3db433b0b6e | | Server ID | 38617807-e027-4d1f-9320-c94d4d05bb8a | | Volume ID | 61d266bf-422c-41eb-9f5b-c3db433b0b6e | | Device | /dev/vdb | | Tag | None | | Delete On Termination | False | +-----------------------+--------------------------------------+ # the status of attached disk turns [in-use] like follows ubuntu@dlp ~(keystone)$ openstack volume list +--------------------------+--------+--------+------+--------------------------+ | ID | Name | Status | Size | Attached to | +--------------------------+--------+--------+------+--------------------------+ | 61d266bf-422c-41eb-9f5b- | disk01 | in-use | 10 | Attached to Ubuntu-2404 | | c3db433b0b6e | | | | on /dev/vdb | +--------------------------+--------+--------+------+--------------------------+ # to detach the disk, do like follows ubuntu@dlp ~(keystone)$ openstack server remove volume Ubuntu-2404 disk01 |
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