Ubuntu 16.04
Sponsored Link

OpenStack Ocata : Use Cinder Storage (Multi-BackEnds)
2017/03/16
 
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            eth0|10.0.0.35
 +-----------+-----------+  +-----------+-----------+  +-----------+-----------+  +----------+-----------+
 |    [ Control Node ]   |  |    [ Storage Node ]   |  |    [ Compute Node ]   |  |   [  NFS Server  ]   |
 |                       |  |                       |  |                       |  |                      |
 |  MariaDB    RabbitMQ  |  |      Open vSwitch     |  |        Libvirt        |  +----------------------+
 |  Memcached  httpd     |  |  L2,L3,Metadata Agent |  |      Nova Compute     |
 |  Keystone   Glance    |  |     Cinder-Volume     |  |        L2 Agent       |
 |  Nova API             |  |                       |  |                       |
 |  Neutron Server       |  |                       |  |                       |
 |  Cinder API           |  |                       |  |                       |
 +-----------------------+  +-----------------------+  +-----------------------+

[1]
For LVM backend on this example, use a volume group [vg_volume01] for it.
[2]
NFS server is required to be running on your LAN, refer to here.
On this example, configure [/var/nfs-share] directory on "nfs.srv.world" as a shared directory.
[3] Configure Storage Node.
root@storage:~#
apt-get -y install nfs-common
[root@storage ~]#
vi /etc/idmapd.conf
# line 6: uncomment and change to the own domain name

Domain =
srv.world
root@storage:~#
vi /etc/cinder/cinder.conf
# add follows in the [DEFAULT] section

enabled_backends = lvm,nfs

# add follows to the end
[lvm]
iscsi_helper = lioadm
# vlume group name
volume_group = vg_volume01
# IP address of Storage Node
iscsi_ip_address = 10.0.0.50
volume_driver = cinder.volume.drivers.lvm.LVMVolumeDriver
volumes_dir = $state_path/volumes
iscsi_protocol = iscsi

[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/nfs-share
root@storage:~#
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
[4] Configure Compute Node.
root@node01:~#
apt-get -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
root@node01:~#
systemctl restart nova-compute

[5] Create volume types. It's OK to work on any node. (This example is on Control Node)
# set environment variable first

root@dlp ~(keystone)#
echo "export OS_VOLUME_API_VERSION=2" >> ~/keystonerc

root@dlp ~(keystone)#
source ~/keystonerc
root@dlp ~(keystone)#
openstack volume type create lvm

+-------------+--------------------------------------+
| Field       | Value                                |
+-------------+--------------------------------------+
| description | None                                 |
| id          | 709b47bb-5c3d-4565-960b-9da93405b7fd |
| is_public   | True                                 |
| name        | lvm                                  |
+-------------+--------------------------------------+

root@dlp ~(keystone)#
openstack volume type create nfs

+-------------+--------------------------------------+
| Field       | Value                                |
+-------------+--------------------------------------+
| description | None                                 |
| id          | a05ea92b-f98b-4d99-93dd-c24b3e191cd9 |
| is_public   | True                                 |
| name        | nfs                                  |
+-------------+--------------------------------------+

root@dlp ~(keystone)#
openstack volume type list

+--------------------------------------+------+-----------+
| ID                                   | Name | Is Public |
+--------------------------------------+------+-----------+
| 709b47bb-5c3d-4565-960b-9da93405b7fd | lvm  | True      |
| a05ea92b-f98b-4d99-93dd-c24b3e191cd9 | nfs  | True      |
+--------------------------------------+------+-----------+
[6] Create volumes with specifying volume types.
root@dlp ~(keystone)#
openstack volume create --type lvm --size 10 disk_lvm

+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| attachments         | []                                   |
| availability_zone   | nova                                 |
| bootable            | false                                |
| consistencygroup_id | None                                 |
| created_at          | 2017-03-17T06:40:34.189357           |
| description         | None                                 |
| encrypted           | False                                |
| id                  | b11ddfc6-c710-4f02-80b3-9fea5361f2b1 |
| migration_status    | None                                 |
| 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             | 6ecb1a2e5f664d508afac2b985508a0d     |
+---------------------+--------------------------------------+

root@dlp ~(keystone)#
openstack volume create --type nfs --size 10 disk_nfs

+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| attachments         | []                                   |
| availability_zone   | nova                                 |
| bootable            | false                                |
| consistencygroup_id | None                                 |
| created_at          | 2017-03-17T06:40:52.101492           |
| description         | None                                 |
| encrypted           | False                                |
| id                  | 502cfc0b-3165-4a16-98aa-d3ec531f6523 |
| migration_status    | None                                 |
| 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             | 6ecb1a2e5f664d508afac2b985508a0d     |
+---------------------+--------------------------------------+

root@dlp ~(keystone)#
openstack volume list

+------------------------------+--------------+-----------+------+-------------+
| ID                           | Display Name | Status    | Size | Attached to |
+------------------------------+--------------+-----------+------+-------------+
| 502cfc0b-3165-4a16-98aa-     | disk_nfs     | available |   10 |             |
| d3ec531f6523                 |              |           |      |             |
| b11ddfc6-c710-4f02-80b3-9fea | disk_lvm     | available |   10 |             |
| 5361f2b1                     |              |           |      |             |
+------------------------------+--------------+-----------+------+-------------+
[7] Attache volume to an instance.
root@dlp ~(keystone)#
openstack server list

+--------------------+-------------+---------+--------------------+------------+
| ID                 | Name        | Status  | Networks           | Image Name |
+--------------------+-------------+---------+--------------------+------------+
| 9b506f0f-4c3b-458b | Ubuntu_1604 | SHUTOFF | int_net=192.168.10 | Ubuntu1604 |
| -9213-17de1c4da03c |             |         | 0.6, 10.0.0.203    |            |
+--------------------+-------------+---------+--------------------+------------+

root@dlp ~(keystone)#
openstack server add volume Ubuntu_1604 disk_lvm

root@dlp ~(keystone)#
openstack server add volume Ubuntu_1604 disk_nfs
# the status of attached disk turns "in-use" like follows

root@dlp ~(keystone)#
openstack volume list

+-----------------------+--------------+--------+------+-----------------------+
| ID                    | Display Name | Status | Size | Attached to           |
+-----------------------+--------------+--------+------+-----------------------+
| 502cfc0b-3165-4a16    | disk_nfs     | in-use |   10 | Attached to           |
| -98aa-d3ec531f6523    |              |        |      | Ubuntu_1604 on        |
|                       |              |        |      | /dev/vdc              |
| b11ddfc6-c710-4f02-80 | disk_lvm     | in-use |   10 | Attached to           |
| b3-9fea5361f2b1       |              |        |      | Ubuntu_1604 on        |
|                       |              |        |      | /dev/vdb              |
+-----------------------+--------------+--------+------+-----------------------+

# detach the disk

root@dlp ~(keystone)#
openstack server remove volume Ubuntu_1604 disk_lvm

root@dlp ~(keystone)#
openstack server remove volume Ubuntu_1604 disk_nfs

Matched Content
 
Tweet