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OpenStack Pike : Use Cinder Storage (Multi-BackEnds)
2017/09/17 |
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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 | | | | 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 | | | | |
+-----------------------+ +-----------------------+ +-----------------------+
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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-get -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 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/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-get -y install nfs-common
root@node01:~#
vi /etc/idmapd.conf # line 5: 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 | 9f4be8a5-b60b-4247-9328-4bb179d410c0 | | is_public | True | | name | lvm | +-------------+--------------------------------------+root@dlp ~(keystone)# openstack volume type create nfs +-------------+--------------------------------------+ | Field | Value | +-------------+--------------------------------------+ | description | None | | id | 7042b9b1-d664-480b-8021-bb80e941959d | | is_public | True | | name | nfs | +-------------+--------------------------------------+root@dlp ~(keystone)# openstack volume type list +--------------------------------------+------+-----------+ | ID | Name | Is Public | +--------------------------------------+------+-----------+ | 7042b9b1-d664-480b-8021-bb80e941959d | nfs | True | | 9f4be8a5-b60b-4247-9328-4bb179d410c0 | lvm | 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 | 2017-09-20T07:22:33.133942 | | description | None | | encrypted | False | | id | b6189f07-ddfa-4b88-97a5-aa3988d16ab2 | | 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 | 71b407652ab4433a801915ab21018ffd | +---------------------+--------------------------------------+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 | 2017-09-20T07:22:49.460844 | | description | None | | encrypted | False | | id | a2ef75ef-6b1b-4962-998c-e3d81be34f2a | | 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 | 71b407652ab4433a801915ab21018ffd | +---------------------+--------------------------------------+root@dlp ~(keystone)# openstack volume list +--------------------------------------+----------+-----------+------+-------------+ | ID | Name | Status | Size | Attached to | +--------------------------------------+----------+-----------+------+-------------+ | a2ef75ef-6b1b-4962-998c-e3d81be34f2a | disk_nfs | available | 10 | | | b6189f07-ddfa-4b88-97a5-aa3988d16ab2 | disk_lvm | available | 10 | | +--------------------------------------+----------+-----------+------+-------------+ |
| [7] | Attache volume to an instance. |
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root@dlp ~(keystone)# openstack server list +-----------+-------------+---------+------------------------------------+------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +-----------+-------------+---------+------------------------------------+------------+----------+ | f5ae3046- | Ubuntu_1604 | SHUTOFF | int_net=192.168.100.10, 10.0.0.210 | Ubuntu1604 | m1.small | +-----------+-------------+---------+------------------------------------+------------+----------+
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 | Name | Status | Size | Attached to | +--------------------------------------+----------+--------+------+--------------------------------------+ | a2ef75ef-6b1b-4962-998c-e3d81be34f2a | disk_nfs | in-use | 10 | Attached to Ubuntu_1604 on /dev/vdc | | b6189f07-ddfa-4b88-97a5-aa3988d16ab2 | disk_lvm | in-use | 10 | Attached to Ubuntu_1604 on /dev/vdb | +--------------------------------------+----------+--------+------+--------------------------------------+ # for detaching the disk,run like follows root@dlp ~(keystone)# openstack server remove volume Ubuntu_1604 disk_lvm root@dlp ~(keystone)# openstack server remove volume Ubuntu_1604 disk_nfs |