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OpenStack Ocata : Use Cinder Storage (Multi-BackEnds)
2017/03/16 |
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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 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 | | | | |
+-----------------------+ +-----------------------+ +-----------------------+
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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/nfs-share] directory on "nfs.srv.world" as a shared directory. |
| [3] | Configure Storage Node. |
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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 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-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 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=2" >> ~/keystonerc root@dlp ~(keystone)# source ~/keystonerc
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. |
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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. |
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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 |