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OpenStack Newton : Cinder Storage (Multi-BackEnds)
2016/10/26 |
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It's possible to use Virtual Storages provided by Cinder if an Instance needs more disks.
Configure Virtual storage with NFS and GlusterFS Multi-Backend on here.
+------------------+ +------------------+
10.0.0.50| [ Storage Node ] | 10.0.0.61| |
+------------------+ +-----+ Cinder-Volume | +-----+ GlusterFS #1 |
| [ Control Node ] | | eth0| | | eth0| |
| Keystone |10.0.0.30 | +------------------+ | +------------------+
| Glance |------------+------------------------------+
| Nova API |eth0 | +------------------+ | +------------------+
| Cinder API | | eth0| [ Compute Node ] | | eth0| |
+------------------+ +-----+ Nova Compute | +-----+ GlusterFS #2 |
10.0.0.51| | 10.0.0.62| |
+------------------+ | +------------------+
|
| +------------------+
| eth0| |
+-----+ NFS |
10.0.0.40| |
+------------------+
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| [1] |
NFS server is required to be running on your LAN, refer to here.
On this example, configure "/storage" directory on "nfs.srv.world" as a shared directory. |
| [2] |
GlusterFS server is required to be running on your LAN, refer to here.
This example uses a replication volume "vol_replica" provided by "glfs01" and "glfs02". |
| [3] | Configure Storage Node. |
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# install from EPEL
[root@storage ~]#
yum --enablerepo=epel -y install nfs-utils glusterfs glusterfs-fuse
[root@storage ~]#
vi /etc/cinder/cinder.conf # add follows in the [DEFAULT] section enabled_backends=nfs,glusterfs # add follows to the end
[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
[glusterfs]
volume_driver = cinder.volume.drivers.glusterfs.GlusterfsDriver volume_backend_name = GlusterFS glusterfs_shares_config = /etc/cinder/glusterfs_shares glusterfs_mount_point_base = $state_path/mnt_glusterfs
[root@storage ~]#
vi /etc/cinder/nfs_shares # create new : specify NFS shared directories nfs.srv.world:/storage
[root@storage ~]#
vi /etc/cinder/glusterfs_shares # create new : specify GlusterFS volumes glfs01.srv.world:/vol_replica chmod 640 /etc/cinder/nfs_shares [root@storage ~]# chgrp cinder /etc/cinder/nfs_shares [root@storage ~]# chmod 640 /etc/cinder/glusterfs_shares [root@storage ~]# chgrp cinder /etc/cinder/glusterfs_shares [root@storage ~]# systemctl restart openstack-cinder-volume [root@storage ~]# chown -R cinder. /var/lib/cinder/mnt_nfs |
| [4] | Configure Compute Node to mount NFS and GlusterFS volumes. |
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# install from EPEL
[root@node01 ~]#
yum --enablerepo=epel -y install nfs-utils glusterfs glusterfs-fuse
[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 nfs +---------------------------------+--------------------------------------+ | Field | Value | +---------------------------------+--------------------------------------+ | description | None | | id | 850b8287-cdb0-4009-baf5-6215524e41a3 | | is_public | True | | name | nfs | | os-volume-type-access:is_public | True | +---------------------------------+--------------------------------------+[root@dlp ~(keystone)]# openstack volume type create glusterfs +---------------------------------+--------------------------------------+ | Field | Value | +---------------------------------+--------------------------------------+ | description | None | | id | 1a57b7dc-df9c-42ff-a69a-1d3da61a3993 | | is_public | True | | name | glusterfs | | os-volume-type-access:is_public | True | +---------------------------------+--------------------------------------+[root@dlp ~(keystone)]# openstack volume type list +--------------------------------------+-----------+ | ID | Name | +--------------------------------------+-----------+ | 1a57b7dc-df9c-42ff-a69a-1d3da61a3993 | glusterfs | | 850b8287-cdb0-4009-baf5-6215524e41a3 | nfs | +--------------------------------------+-----------+ |
| [6] | Create volumes with specifying volume types. |
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[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 | 2016-10-27T04:10:43.589841 | | description | None | | encrypted | False | | id | b40a52b0-c543-4ff9-8c5c-1b56924c9f7d | | migration_status | None | | multiattach | False | | name | disk_nfs | | properties | | | replication_status | disabled | | size | 10 | | snapshot_id | None | | source_volid | None | | status | creating | | type | nfs | | updated_at | None | | user_id | 0a28ee66b05f4c7b9709f316c5109e0a | +---------------------+--------------------------------------+[root@dlp ~(keystone)]# openstack volume create --type glusterfs --size 10 disk_glusterfs +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | attachments | [] | | availability_zone | nova | | bootable | false | | consistencygroup_id | None | | created_at | 2016-10-27T04:11:18.091336 | | description | None | | encrypted | False | | id | 6415db4c-5a09-422d-8615-1534b52a5368 | | migration_status | None | | multiattach | False | | name | disk_glusterfs | | properties | | | replication_status | disabled | | size | 10 | | snapshot_id | None | | source_volid | None | | status | creating | | type | glusterfs | | updated_at | None | | user_id | 0a28ee66b05f4c7b9709f316c5109e0a | +---------------------+--------------------------------------+[root@dlp ~(keystone)]# openstack volume list +--------------------------------------+----------------+-----------+------+-------------+ | ID | Display Name | Status | Size | Attached to | +--------------------------------------+----------------+-----------+------+-------------+ | 6415db4c-5a09-422d-8615-1534b52a5368 | disk_glusterfs | available | 10 | | | b40a52b0-c543-4ff9-8c5c-1b56924c9f7d | disk_nfs | available | 10 | | +--------------------------------------+----------------+-----------+------+-------------+ |
| [7] | The Configuration is all OK. Attach volumes to instances like follows. |
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[root@dlp ~(keystone)]# openstack server list +-----------+----------+---------+------------------------------------+------------+ | ID | Name | Status | Networks | Image Name | +-----------+----------+---------+------------------------------------+------------+ | e5a31503- | CentOS_7 | SHUTOFF | int_net=192.168.100.11, 10.0.0.200 | CentOS7 | +-----------+----------+---------+------------------------------------+------------+
[root@dlp ~(keystone)]#
openstack server add volume CentOS_7 disk_nfs [root@dlp ~(keystone)]# openstack server add volume CentOS_7 disk_glusterfs
# the status of attached disk turns "in-use" like follows [root@dlp ~(keystone)]# openstack volume list +--------------------------------------+----------------+--------+------+-----------------------------------+ | ID | Display Name | Status | Size | Attached to | +--------------------------------------+----------------+--------+------+-----------------------------------+ | 6415db4c-5a09-422d-8615-1534b52a5368 | disk_glusterfs | in-use | 10 | Attached to CentOS_7 on /dev/vdc | | b40a52b0-c543-4ff9-8c5c-1b56924c9f7d | disk_nfs | in-use | 10 | Attached to CentOS_7 on /dev/vdb | +--------------------------------------+----------------+--------+------+-----------------------------------+ |