OpenStack Caracal : Use Cinder Storage (NFS)2024/05/22 |
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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 | | Neutron L2/L3 Agent | | Libvirt |
| Memcached Nginx | | Neutron Metadata | | Nova Compute |
| Keystone httpd | | Open vSwitch | | Neutron L2 Agent |
| Glance Nova API | | iSCSI Target | | Open vSwitch |
| Neutron Server | | Cinder Volume | | |
| Neutron Metadata | | | | |
| Cinder API | | | | |
+-----------------------+ +-----------------------+ +-----------------------+
-----------+-------------------------------------------------------------------
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 = $state_path/mnt
root@network:~#
vi /etc/cinder/nfs_shares # create new : specify NFS shared directory # if set multiple share, write one per line nfs.srv.world:/var/lib/nfs-share chmod 640 /etc/cinder/nfs_shares root@network:~# chgrp cinder /etc/cinder/nfs_shares root@network:~# systemctl restart cinder-volume root@network:~# chown -R cinder:cinder /var/lib/cinder/mnt
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| [3] | Change Nova settings on Compute Node to mount NFS. |
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root@node01:~#
apt -y install nfs-common
root@node01:~#
vi /etc/idmapd.conf # line 5 : uncomment and change to your domain name Domain = srv.world
root@node01:~#
vi /etc/nova/nova.conf # add follows into the [keystone_authtoken] section [keystone_authtoken] ..... ..... service_token_roles = service service_token_roles_required = true # add to last line [service_user] send_service_user_token = true auth_url = https://dlp.srv.world:5000 auth_type = password project_domain_name = Default user_domain_name = Default project_name = service username = nova password = servicepassword insecure = false [cinder] os_region_name = RegionOneroot@node01:~# systemctl restart nova-compute
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| [4] | Login as a common user you'd like to add volumes to own instances. For example, create a virtual disk [disk01] with 10GB. It's OK to work on any node. (example below is on Control Node) |
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# set environment variable ubuntu@dlp ~(keystone)$ 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 | 2024-05-22T00:23:23.005084 | | description | None | | encrypted | False | | id | 256872e5-b263-44d9-9eb8-f4892336b7b2 | | 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 | b9371d015e0d43dca74f29161448ffd2 | +---------------------+--------------------------------------+ubuntu@dlp ~(keystone)$ openstack volume list +------------------------------------+--------+-----------+------+-------------+ | ID | Name | Status | Size | Attached to | +------------------------------------+--------+-----------+------+-------------+ | 256872e5-b263-44d9-9eb8- | disk01 | available | 10 | | | f4892336b7b2 | | | | | +------------------------------------+--------+-----------+------+-------------+ |
| [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 | +--------------+-------------+---------+--------------+------------+----------+ | 7fbc24c1- | Ubuntu-2404 | SHUTOFF | private=10.0 | Ubuntu2404 | m1.small | | c0d1-43d6- | | | .0.208, 192. | | | | 87aa- | | | 168.100.130 | | | | 68df83597b57 | | | | | | +--------------+-------------+---------+--------------+------------+----------+ubuntu@dlp ~(keystone)$ openstack server add volume Ubuntu-2404 disk01 +-----------------------+--------------------------------------+ | Field | Value | +-----------------------+--------------------------------------+ | ID | 256872e5-b263-44d9-9eb8-f4892336b7b2 | | Server ID | 7fbc24c1-c0d1-43d6-87aa-68df83597b57 | | Volume ID | 256872e5-b263-44d9-9eb8-f4892336b7b2 | | 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 | +--------------------------+--------+--------+------+--------------------------+ | 256872e5-b263-44d9-9eb8- | disk01 | in-use | 10 | Attached to Ubuntu-2404 | | f4892336b7b2 | | | | on /dev/vdb | +--------------------------+--------+--------+------+--------------------------+ # to detach the disk, do like follows ubuntu@dlp ~(keystone)$ openstack server remove volume Ubuntu-2404 disk01 |
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