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OpenStack Queens : Cinder Storage (Multi-BackEnds)
2018/03/08 |
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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 Agent | | Nova Compute |
| Keystone Glance | | L3 Agent | | Open vSwitch |
| Nova API | | Metadata Agent | | L2 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 ~]#
yum -y install nfs-utils
[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 # volume 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 openstack-cinder-volume [root@storage ~]# chown -R cinder. /var/lib/cinder/mnt_nfs |
| [4] | Configure Compute Node. |
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[root@node01 ~]#
yum -y install nfs-utils
[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 openstack-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 | 85d8eb3b-ec2c-4138-87fa-64a370d51284 | | is_public | True | | name | lvm | +-------------+--------------------------------------+[root@dlp ~(keystone)]# openstack volume type create nfs +-------------+--------------------------------------+ | Field | Value | +-------------+--------------------------------------+ | description | None | | id | 24d6ec24-7b94-438d-8ae5-14f814aef3b8 | | is_public | True | | name | nfs | +-------------+--------------------------------------+[root@dlp ~(keystone)]# openstack volume type list +--------------------------------------+------+-----------+ | ID | Name | Is Public | +--------------------------------------+------+-----------+ | 24d6ec24-7b94-438d-8ae5-14f814aef3b8 | nfs | True | | 85d8eb3b-ec2c-4138-87fa-64a370d51284 | lvm | True | +--------------------------------------+------+-----------+ |
| [6] | Login as a common user you'd like to add volumes to own instances. |
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[cent@dlp ~(keystone)]$ openstack volume create --type lvm --size 10 disk_lvm +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | attachments | [] | | availability_zone | nova | | bootable | false | | consistencygroup_id | None | | created_at | 2018-03-09T05:14:35.000000 | | description | None | | encrypted | False | | id | 31e96762-c4c1-499d-80db-f3fbeb9d5121 | | 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 | 3fc6c62eb5aa440aaa1eaf745faa35d6 | +---------------------+--------------------------------------+[cent@dlp ~(keystone)]$ openstack volume create --type nfs --size 10 disk_nfs +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | attachments | [] | | availability_zone | nova | | bootable | false | | consistencygroup_id | None | | created_at | 2018-03-09T05:14:55.000000 | | description | None | | encrypted | False | | id | d35ed25b-45b4-4b58-88d0-4f86bb055850 | | 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 | 3fc6c62eb5aa440aaa1eaf745faa35d6 | +---------------------+--------------------------------------+[cent@dlp ~(keystone)]$ openstack volume list +--------------------------------------+----------+-----------+------+-------------+ | ID | Name | Status | Size | Attached to | +--------------------------------------+----------+-----------+------+-------------+ | d35ed25b-45b4-4b58-88d0-4f86bb055850 | disk_nfs | available | 10 | | | 31e96762-c4c1-499d-80db-f3fbeb9d5121 | disk_lvm | available | 10 | | +--------------------------------------+----------+-----------+------+-------------+ |
| [7] | Attache volume to an instance. |
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[cent@dlp ~(keystone)]$ openstack server list +-----------+----------+---------+-----------------------------------+---------+----------+ | ID | Name | Status | Networks | Image | Flavor | +-----------+----------+---------+-----------------------------------+---------+----------+ | f2da82e9- | CentOS_7 | SHUTOFF | int_net=192.168.100.8, 10.0.0.202 | CentOS7 | m1.small | +-----------+----------+---------+-----------------------------------+---------+----------+
[cent@dlp ~(keystone)]$
openstack server add volume CentOS_7 disk_lvm [cent@dlp ~(keystone)]$ openstack server add volume CentOS_7 disk_nfs
# the status of attached disk turns [in-use] like follows [cent@dlp ~(keystone)]$ openstack volume list +--------------------------------------+----------+--------+------+-----------------------------------+ | ID | Name | Status | Size | Attached to | +--------------------------------------+----------+--------+------+-----------------------------------+ | d35ed25b-45b4-4b58-88d0-4f86bb055850 | disk_nfs | in-use | 10 | Attached to CentOS_7 on /dev/vdc | | 31e96762-c4c1-499d-80db-f3fbeb9d5121 | disk_lvm | in-use | 10 | Attached to CentOS_7 on /dev/vdb | +--------------------------------------+----------+--------+------+-----------------------------------+ # detach the disk [cent@dlp ~(keystone)]$ openstack server remove volume CentOS_7 disk_lvm [cent@dlp ~(keystone)]$ openstack server remove volume CentOS_7 disk_nfs |