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OpenStack Queens : Use Cinder Storage (Multi-BackEnds)
2018/03/15 |
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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 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 | 7a1213bf-95bd-4357-8cef-d8caa3add516 | | is_public | True | | name | lvm | +-------------+--------------------------------------+root@dlp ~(keystone)# openstack volume type create nfs +-------------+--------------------------------------+ | Field | Value | +-------------+--------------------------------------+ | description | None | | id | 1e9595d0-79c4-413c-a6b1-c61b9c0124f7 | | is_public | True | | name | nfs | +-------------+--------------------------------------+root@dlp ~(keystone)# openstack volume type list +--------------------------------------+------+-----------+ | ID | Name | Is Public | +--------------------------------------+------+-----------+ | 1e9595d0-79c4-413c-a6b1-c61b9c0124f7 | nfs | True | | 7a1213bf-95bd-4357-8cef-d8caa3add516 | lvm | True | +--------------------------------------+------+-----------+ |
| [6] | Login as a common user you'd like to add volumes to own instances. |
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ubuntu@dlp ~(keystone)$ openstack volume create --type lvm --size 10 disk_lvm +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | attachments | [] | | availability_zone | nova | | bootable | false | | consistencygroup_id | None | | created_at | 2018-03-16T02:40:38.000000 | | description | None | | encrypted | False | | id | 931a8bd1-07be-4f9c-acb7-2d026a527524 | | 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 | b7b1b4b96b714e458690dd893fbbe5f5 | +---------------------+--------------------------------------+ubuntu@dlp ~(keystone)$ openstack volume create --type nfs --size 10 disk_nfs +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | attachments | [] | | availability_zone | nova | | bootable | false | | consistencygroup_id | None | | created_at | 2018-03-16T02:40:56.000000 | | description | None | | encrypted | False | | id | 39fcb12a-4e7e-442a-bee5-7271fd4a6095 | | 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 | b7b1b4b96b714e458690dd893fbbe5f5 | +---------------------+--------------------------------------+ubuntu@dlp ~(keystone)$ openstack volume list +--------------------------------------+----------+-----------+------+-------------+ | ID | Name | Status | Size | Attached to | +--------------------------------------+----------+-----------+------+-------------+ | 39fcb12a-4e7e-442a-bee5-7271fd4a6095 | disk_nfs | available | 10 | | | 931a8bd1-07be-4f9c-acb7-2d026a527524 | disk_lvm | available | 10 | | +--------------------------------------+----------+-----------+------+-------------+ |
| [7] | Attache volume to an instance. |
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ubuntu@dlp ~(keystone)$ openstack server list +-----------+-------------+---------+-----------------------------------+------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +-----------+-------------+---------+-----------------------------------+------------+----------+ | fffbf3f6- | Ubuntu_1604 | SHUTOFF | int_net=192.168.100.8, 10.0.0.208 | Ubuntu1604 | m1.small | +-----------+-------------+---------+-----------------------------------+------------+----------+
ubuntu@dlp ~(keystone)$
openstack server add volume Ubuntu_1604 disk_lvm ubuntu@dlp ~(keystone)$ openstack server add volume Ubuntu_1604 disk_nfs
# the status of attached disk turns [in-use] like follows ubuntu@dlp ~(keystone)$ openstack volume list +--------------------------------------+----------+--------+------+--------------------------------------+ | ID | Name | Status | Size | Attached to | +--------------------------------------+----------+--------+------+--------------------------------------+ | 39fcb12a-4e7e-442a-bee5-7271fd4a6095 | disk_nfs | in-use | 10 | Attached to Ubuntu_1604 on /dev/vdc | | 931a8bd1-07be-4f9c-acb7-2d026a527524 | disk_lvm | in-use | 10 | Attached to Ubuntu_1604 on /dev/vdb | +--------------------------------------+----------+--------+------+--------------------------------------+ # for detaching the disk,run like follows ubuntu@dlp ~(keystone)$ openstack server remove volume Ubuntu_1604 disk_lvm ubuntu@dlp ~(keystone)$ openstack server remove volume Ubuntu_1604 disk_nfs |