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OpenStack Kilo : Cinder Storage(Multi-Backend)
2015/06/20 |
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It's possible to use the Virtual Storage 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.
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.
This example uses a replication volume "vol_replica" provided by "gfs01" and "gfs02". |
| [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/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/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 gfs01.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 |
| [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/nova/nova.conf # add follows in the [DEFAULT] section osapi_volume_listen=0.0.0.0 volume_api_class=nova.volume.cinder.API 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
cinder type-create nfs +--------------------------------------+------+ | ID | Name | +--------------------------------------+------+ | 7ac3a255-cf70-498d-97d8-2a7fcdd84d2c | nfs | +--------------------------------------+------+[root@dlp ~(keystone)]# cinder type-create glusterfs +--------------------------------------+-----------+ | ID | Name | +--------------------------------------+-----------+ | e2608bee-cc52-48e8-ba72-b94124f36a57 | glusterfs | +--------------------------------------+-----------+[root@dlp ~(keystone)]# cinder type-list +--------------------------------------+-----------+ | ID | Name | +--------------------------------------+-----------+ | 7ac3a255-cf70-498d-97d8-2a7fcdd84d2c | nfs | | e2608bee-cc52-48e8-ba72-b94124f36a57 | glusterfs | +--------------------------------------+-----------+ |
| [6] | Associates volume types set in [5] and names set in cinder.conf. |
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[root@dlp ~(keystone)]# cinder type-key nfs set volume_backend_name=NFS [root@dlp ~(keystone)]# cinder type-key glusterfs set volume_backend_name=GlusterFS [root@dlp ~(keystone)]# cinder extra-specs-list
+--------------------------------------+-----------+----------------------------------------+
| ID | Name | extra_specs |
+--------------------------------------+-----------+----------------------------------------+
| 7ac3a255-cf70-498d-97d8-2a7fcdd84d2c | nfs | {u'volume_backend_name': u'NFS'} |
| e2608bee-cc52-48e8-ba72-b94124f36a57 | glusterfs | {u'volume_backend_name': u'GlusterFS'} |
+--------------------------------------+-----------+----------------------------------------+
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| [7] | Create volumes with specifying volume types. |
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[root@dlp ~(keystone)]# cinder create --display_name disk_nfs --volume-type nfs 10
+---------------------------------------+--------------------------------------+
| Property | Value |
+---------------------------------------+--------------------------------------+
| attachments | [] |
| availability_zone | nova |
| bootable | false |
| consistencygroup_id | None |
| created_at | 2015-06-20T18:23:23.000000 |
| description | None |
| encrypted | False |
| id | 1e92b9ca-20d7-4f63-881e-dea3f8b6b523 |
| metadata | {} |
| multiattach | False |
| name | disk_nfs |
| os-vol-host-attr:host | None |
| os-vol-mig-status-attr:migstat | None |
| os-vol-mig-status-attr:name_id | None |
| os-vol-tenant-attr:tenant_id | 98ea1b896d3a48438922c0dfa9f6bc52 |
| os-volume-replication:driver_data | None |
| os-volume-replication:extended_status | None |
| replication_status | disabled |
| size | 10 |
| snapshot_id | None |
| source_volid | None |
| status | creating |
| user_id | 704a7f5cf84a479796e10f47c30bb629 |
| volume_type | nfs |
+---------------------------------------+--------------------------------------+
[root@dlp ~(keystone)]# cinder create --display_name disk_glusterfs --volume-type glusterfs 10
+---------------------------------------+--------------------------------------+
| Property | Value |
+---------------------------------------+--------------------------------------+
| attachments | [] |
| availability_zone | nova |
| bootable | false |
| consistencygroup_id | None |
| created_at | 2015-06-20T18:23:49.000000 |
| description | None |
| encrypted | False |
| id | d8dbaed2-e857-4162-baab-0178fbef4593 |
| metadata | {} |
| multiattach | False |
| name | disk_glusterfs |
| os-vol-host-attr:host | None |
| os-vol-mig-status-attr:migstat | None |
| os-vol-mig-status-attr:name_id | None |
| os-vol-tenant-attr:tenant_id | 98ea1b896d3a48438922c0dfa9f6bc52 |
| os-volume-replication:driver_data | None |
| os-volume-replication:extended_status | None |
| replication_status | disabled |
| size | 10 |
| snapshot_id | None |
| source_volid | None |
| status | creating |
| user_id | 704a7f5cf84a479796e10f47c30bb629 |
| volume_type | glusterfs |
+---------------------------------------+--------------------------------------+
[root@dlp ~(keystone)]# cinder list +--------------------------+-----------+----------------+------+-------------+----------+-------------+ | ID | Status | Name | Size | Volume Type | Bootable | Attached to | +--------------------------+-----------+----------------+------+-------------+----------+-------------+ | 1e92b9ca-20d7-4f63-881e- | available | disk_nfs | 10 | nfs | false | | | d8dbaed2-e857-4162-baab- | available | disk_glusterfs | 10 | glusterfs | false | | +--------------------------+-----------+----------------+------+-------------+----------+-------------+ |
| [8] | The Configuration is all OK. Attach volumes to instances like follows. |
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[root@dlp ~(keystone)]# nova list +----------------+----------+---------+------------+-------------+-----------------------------------+ | ID | Name | Status | Task State | Power State | Networks | +----------------+----------+---------+------------+-------------+-----------------------------------+ | 2c7a1025-30d6- | CentOS_7 | SHUTOFF | - | Shutdown | int_net=192.168.100.3, 10.0.0.201 | +----------------+----------+---------+------------+-------------+-----------------------------------+[root@dlp ~(keystone)]# nova volume-attach CentOS_7 1e92b9ca-20d7-4f63-881e-dea3f8b6b523 auto +----------+--------------------------------------+ | Property | Value | +----------+--------------------------------------+ | device | /dev/vdc | | id | 1e92b9ca-20d7-4f63-881e-dea3f8b6b523 | | serverId | 2c7a1025-30d6-446a-a4ff-309347b64eca | | volumeId | 1e92b9ca-20d7-4f63-881e-dea3f8b6b523 | +----------+--------------------------------------+[root@dlp ~(keystone)]# nova volume-attach CentOS_7 d8dbaed2-e857-4162-baab-0178fbef4593 auto +----------+--------------------------------------+ | Property | Value | +----------+--------------------------------------+ | device | /dev/vdd | | id | d8dbaed2-e857-4162-baab-0178fbef4593 | | serverId | 2c7a1025-30d6-446a-a4ff-309347b64eca | | volumeId | d8dbaed2-e857-4162-baab-0178fbef4593 | +----------+--------------------------------------+ # the status of attached disk turns "in-use" like follows [root@dlp ~(keystone)]# cinder list +--------------------------+--------+----------------+------+-------------+----------+-----------------------------+ | ID | Status | Name | Size | Volume Type | Bootable | Attached to | +--------------------------+--------+----------------+------+-------------+----------+-----------------------------+ | 1e92b9ca-20d7-4f63-881e- | in-use | disk_nfs | 10 | nfs | false | 2c7a1025-30d6-446a-a4ff-309 | | d8dbaed2-e857-4162-baab- | in-use | disk_glusterfs | 10 | glusterfs | false | 2c7a1025-30d6-446a-a4ff-309 | +--------------------------+--------+----------------+------+-------------+----------+-----------------------------+ |