OpenStack Newton : Cinder Storage (GlusterFS)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 GlusterFS 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| |
+------------------+ +------------------+
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| [1] |
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". |
| [2] | Configure Storage Node. |
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# install from EPEL
[root@storage ~]#
yum --enablerepo=epel -y install glusterfs glusterfs-fuse
[root@storage ~]#
vi /etc/cinder/cinder.conf # add follows in the [DEFAULT] section enabled_backends = glusterfs # add follows to the end [glusterfs] volume_driver = cinder.volume.drivers.glusterfs.GlusterfsDriver glusterfs_shares_config = /etc/cinder/glusterfs_shares glusterfs_mount_point_base = $state_path/mnt_gluster
[root@storage ~]#
vi /etc/cinder/glusterfs_shares # create new : specify GlusterFS volumes glfs01.srv.world:/vol_replica chmod 640 /etc/cinder/glusterfs_shares [root@storage ~]# chgrp cinder /etc/cinder/glusterfs_shares [root@storage ~]# systemctl restart openstack-cinder-volume |
| [3] | Configure Compute Node to mount GlusterFS volume. |
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# install from EPEL
[root@node01 ~]#
yum --enablerepo=epel -y install glusterfs glusterfs-fuse
[root@node01 ~]#
vi /etc/nova/nova.conf # add follows to the end [cinder] os_region_name = RegionOne systemctl restart openstack-nova-compute |
| [4] | For example, create a virtual disk "disk01" with 10GB. 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 create --size 10 disk01 +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | attachments | [] | | availability_zone | nova | | bootable | false | | consistencygroup_id | None | | created_at | 2016-10-27T02:58:46.695688 | | description | None | | encrypted | False | | id | d50cd709-96eb-4997-a4a7-645781f08021 | | migration_status | None | | multiattach | False | | name | disk01 | | properties | | | replication_status | disabled | | size | 10 | | snapshot_id | None | | source_volid | None | | status | creating | | type | None | | updated_at | None | | user_id | 0a28ee66b05f4c7b9709f316c5109e0a | +---------------------+--------------------------------------+[root@dlp ~(keystone)]# openstack volume list +--------------------------------------+--------------+-----------+------+-------------+ | ID | Display Name | Status | Size | Attached to | +--------------------------------------+--------------+-----------+------+-------------+ | d50cd709-96eb-4997-a4a7-645781f08021 | disk01 | available | 10 | | +--------------------------------------+--------------+-----------+------+-------------+ |
| [5] | Attach the virtual disk to an Instance. For the example below, the disk is connected as "/dev/vdb". It's possible to use it as a storage to create a file system on it. |
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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 disk01
# the status of attached disk turns "in-use" like follows [root@dlp ~(keystone)]# openstack volume list +--------------------------------------+--------------+--------+------+-----------------------------------+ | ID | Display Name | Status | Size | Attached to | +--------------------------------------+--------------+--------+------+-----------------------------------+ | d50cd709-96eb-4997-a4a7-645781f08021 | disk01 | in-use | 10 | Attached to CentOS_7 on /dev/vdb | +--------------------------------------+--------------+--------+------+-----------------------------------+ |
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