OpenStack Rocky : Use Cinder Storage (Multi-Backend)2019/08/21 |
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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 and NFS Multi-Backend on here.
------------+-------------------------+-------------------------+-------------+---
| | | |
eth0|10.0.0.30 eth0|10.0.0.50 eth0|10.0.0.51 |
+-----------+-----------+ +-----------+-----------+ +-----------+-----------+ |
| [ Control Node ] | | [ Storage Node ] | | [ Compute Node ] | |
| | | | | | |
| MariaDB RabbitMQ | | | | Libvirt | |
| Memcached httpd | | L2 Agent | | Nova Compute | |
| Keystone Glance | | L3 Agent | | L2 Agent | |
| Nova API | | Metadata Agent | | | |
| Neutron Server | | Cinder Volume | | | |
| Metadata Agent | | | | | |
| Cinder API | | | | | |
+-----------------------+ +-----------------------+ +-----------------------+ |
-----------+------------------------------------------------------------------+
eth0|10.0.0.35
+----------+-----------+
| [ NFS Server ] |
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+----------------------+
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| [1] |
For LVM backend on this example, use a volume group [vg_volume01] for it.
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| [2] |
NFS server is required to be running on your LAN, refer to here.
On this example, configure [/var/lib/nfs-share] directory on [nfs.srv.world] as a shared directory. |
| [3] | Configure Storage Node. |
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root@storage:~#
apt -y install nfs-common
root@storage:~#
vi /etc/idmapd.conf # line 5: uncomment and change to the own domain name Domain = srv.world
root@storage:~#
vi /etc/cinder/cinder.conf # add the value for enabled_backends enabled_backends = lvm,nfs # add follows to the end [lvm] target_helper = tgtadm target_protocol = iscsi # IP address of Storage Node target_ip_address = 10.0.0.50 volume_backend_name = LVM # volume group name just created 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 # create new : specify NFS shared directories nfs.srv.world:/var/lib/nfs-share chmod 640 /etc/cinder/nfs_shares root@storage:~# chgrp cinder /etc/cinder/nfs_shares root@storage:~# systemctl restart cinder-volume root@storage:~# chown -R cinder. /var/lib/cinder/mnt_nfs
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| [4] | Configure Compute Node. |
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root@node01:~#
apt -y install nfs-common
root@node01:~#
vi /etc/idmapd.conf # line 6: uncomment and change to the own domain name Domain = srv.world
root@node01:~#
vi /etc/nova/nova.conf # add follows to the end [cinder] os_region_name = RegionOne systemctl restart nova-compute |
| [5] | Create volume types. It's OK to work on any node. (This example is on Control Node) |
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# set environment variable first 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 | 53c99eef-4ad1-4706-9246-730d838ee67e | | is_public | True | | name | lvm | +-------------+--------------------------------------+root@dlp ~(keystone)# openstack volume type create nfs +-------------+--------------------------------------+ | Field | Value | +-------------+--------------------------------------+ | description | None | | id | a2b34f33-049a-46ab-8a65-569876049e66 | | is_public | True | | name | nfs | +-------------+--------------------------------------+root@dlp ~(keystone)# openstack volume type list +--------------------------------------+------+-----------+ | ID | Name | Is Public | +--------------------------------------+------+-----------+ | a2b34f33-049a-46ab-8a65-569876049e66 | nfs | True | | 53c99eef-4ad1-4706-9246-730d838ee67e | lvm | True | +--------------------------------------+------+-----------+ |
| [6] | Login as a common user you'd like to add volumes to own instances. |
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# set environment variable first debian@dlp ~(keystone)$ echo "export OS_VOLUME_API_VERSION=3" >> ~/keystonerc debian@dlp ~(keystone)$ source ~/keystonerc
openstack volume create --type lvm --size 10 disk_lvm +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | attachments | [] | | availability_zone | nova | | bootable | false | | consistencygroup_id | None | | created_at | 2019-08-21T02:54:32.000000 | | description | None | | encrypted | False | | id | 54f21e8f-af6b-4676-ab55-69411da6a3b8 | | multiattach | False | | name | disk_lvm | | properties | | | replication_status | None | | size | 10 | | snapshot_id | None | | source_volid | None | | status | creating | | type | lvm | | updated_at | None | | user_id | 2af053ff367b47fc9e1a9139c29340b6 | +---------------------+--------------------------------------+debian@dlp ~(keystone)$ openstack volume create --type nfs --size 10 disk_nfs +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | attachments | [] | | availability_zone | nova | | bootable | false | | consistencygroup_id | None | | created_at | 2019-08-21T02:54:48.000000 | | description | None | | encrypted | False | | id | e073e628-8316-4fcb-a831-c6ca85ff2e36 | | multiattach | False | | name | disk_nfs | | properties | | | replication_status | None | | size | 10 | | snapshot_id | None | | source_volid | None | | status | creating | | type | nfs | | updated_at | None | | user_id | 2af053ff367b47fc9e1a9139c29340b6 | +---------------------+--------------------------------------+debian@dlp ~(keystone)$ openstack volume list +--------------------------------------+----------+-----------+------+-------------+ | ID | Name | Status | Size | Attached to | +--------------------------------------+----------+-----------+------+-------------+ | e073e628-8316-4fcb-a831-c6ca85ff2e36 | disk_nfs | available | 10 | | | 54f21e8f-af6b-4676-ab55-69411da6a3b8 | disk_lvm | available | 10 | | +--------------------------------------+----------+-----------+------+-------------+ |
| [7] | Attache volume to an instance. |
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debian@dlp ~(keystone)$ openstack server list +--------------------------------------+-----------+---------+------------------------------------+----------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+-----------+---------+------------------------------------+----------+----------+ | ca63556d-5adc-4183-a2de-476da9f71780 | Debian_10 | SHUTOFF | int_net=192.168.100.10, 10.0.0.219 | Debian10 | m1.small | +--------------------------------------+-----------+---------+------------------------------------+----------+----------+
debian@dlp ~(keystone)$
openstack server add volume Debian_10 disk_lvm debian@dlp ~(keystone)$ openstack server add volume Debian_10 disk_nfs
# the status of attached disk turns [in-use] like follows debian@dlp ~(keystone)$ openstack volume list +--------------------------------------+----------+--------+------+------------------------------------+ | ID | Name | Status | Size | Attached to | +--------------------------------------+----------+--------+------+------------------------------------+ | e073e628-8316-4fcb-a831-c6ca85ff2e36 | disk_nfs | in-use | 10 | Attached to Debian_10 on /dev/vdc | | 54f21e8f-af6b-4676-ab55-69411da6a3b8 | disk_lvm | in-use | 10 | Attached to Debian_10 on /dev/vdb | +--------------------------------------+----------+--------+------+------------------------------------+ # for detaching the disk,run like follows debian@dlp ~(keystone)$ openstack server remove volume Debian_10 disk_lvm debian@dlp ~(keystone)$ openstack server remove volume Debian_10 disk_nfs |
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