OpenStack Dalmatian : Use Cinder Storage (LVM)2024/10/09 |
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It's possible to use Virtual Storages provided by Cinder if an Instance needs more disks.
Configure Virtual storage with LVM backend on here.
------------+--------------------------+--------------------------+------------
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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 |
+-----------------------+ +-----------------------+ +-----------------------+
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| [1] | Create a volume group for Cinder on Storage Node. |
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root@network:~# pvcreate /dev/sdb1 Physical volume "/dev/sdb1" successfully created root@network:~# vgcreate -s 32M vg_volume01 /dev/sdb1 Volume group "vg_volume01" successfully created |
| [2] | Configure Cinder Volume on Storage Node. |
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root@network:~#
apt -y install targetcli-fb python3-rtslib-fb
root@network:~#
vi /etc/cinder/cinder.conf # add the value to [enabled_backends] param enabled_backends = lvm
# add to last line
[lvm]
target_helper = lioadm
target_protocol = iscsi
target_ip_address = $my_ip
# volume group name created on [1]
volume_group = vg_volume01
volume_driver = cinder.volume.drivers.lvm.LVMVolumeDriver
volumes_dir = $state_path/volumes
systemctl restart cinder-volume
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| [3] | Configure Nova on Compute Node. |
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root@node01:~#
vi /etc/nova/nova.conf # add follows into the [keystone_authtoken] section [keystone_authtoken] ..... ..... service_token_roles = service service_token_roles_required = true # add to last line [service_user] send_service_user_token = true auth_url = https://dlp.srv.world:5000 auth_type = password project_domain_name = Default user_domain_name = Default project_name = service username = nova password = servicepassword insecure = false [cinder] os_region_name = RegionOneroot@node01:~# systemctl restart nova-compute
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| [4] | Login as a common user you'd like to add volumes to own instances. For example, create a virtual disk [disk01] with 10GB. It's OK to work on any node. (example below is on Control Node) |
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# set environment variable ubuntu@dlp ~(keystone)$ 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 | | consistencygroup_id | None | | created_at | 2024-10-09T01:35:33.467330 | | description | None | | encrypted | False | | id | 0ca96e1c-7674-45d5-8d99-8fe1749de042 | | multiattach | False | | name | disk01 | | properties | | | replication_status | None | | size | 10 | | snapshot_id | None | | source_volid | None | | status | creating | | type | __DEFAULT__ | | updated_at | None | | user_id | d97d1aef1b234c469ad3757bcd51dfa4 | +---------------------+--------------------------------------+ubuntu@dlp ~(keystone)$ openstack volume list +------------------------------------+--------+-----------+------+-------------+ | ID | Name | Status | Size | Attached to | +------------------------------------+--------+-----------+------+-------------+ | 0ca96e1c-7674-45d5-8d99- | disk01 | available | 10 | | | 8fe1749de042 | | | | | +------------------------------------+--------+-----------+------+-------------+ |
| [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 | +--------------+-------------+---------+--------------+------------+----------+ | b8fcec95- | Ubuntu-2404 | SHUTOFF | private=10.0 | Ubuntu2404 | m1.small | | d25f-4f1f- | | | .0.203, 192. | | | | 95ec- | | | 168.100.99 | | | | 91ee1e0e66b1 | | | | | | +--------------+-------------+---------+--------------+------------+----------+ubuntu@dlp ~(keystone)$ openstack server add volume Ubuntu-2404 disk01 +-----------------------+--------------------------------------+ | Field | Value | +-----------------------+--------------------------------------+ | ID | 0ca96e1c-7674-45d5-8d99-8fe1749de042 | | Server ID | b8fcec95-d25f-4f1f-95ec-91ee1e0e66b1 | | Volume ID | 0ca96e1c-7674-45d5-8d99-8fe1749de042 | | 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 | +--------------------------+--------+--------+------+--------------------------+ | 0ca96e1c-7674-45d5-8d99- | disk01 | in-use | 10 | Attached to Ubuntu-2404 | | 8fe1749de042 | | | | on /dev/vdb | +--------------------------+--------+--------+------+--------------------------+ # to detach the disk, do like follows ubuntu@dlp ~(keystone)$ openstack server remove volume Ubuntu-2404 disk01 |
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