OpenStack Kilo : Cinder Storage(GlusterFS)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 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.
This example uses a replication volume "vol_replica" provided by "gfs01" and "gfs02".
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| [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
[root@storage ~]#
vi /etc/cinder/glusterfs_shares # create new : specify GlusterFS volumes gfs01.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 in the [DEFAULT] section osapi_volume_listen=0.0.0.0 volume_api_class=nova.volume.cinder.API 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
cinder create --display_name disk01 10
+---------------------------------------+--------------------------------------+
| Property | Value |
+---------------------------------------+--------------------------------------+
| attachments | [] |
| availability_zone | nova |
| bootable | false |
| consistencygroup_id | None |
| created_at | 2015-06-20T17:39:39.000000 |
| description | None |
| encrypted | False |
| id | 6d712520-5c99-4d59-8a12-c335c373f430 |
| metadata | {} |
| multiattach | False |
| name | disk01 |
| 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 | None |
+---------------------------------------+--------------------------------------+
[root@dlp ~(keystone)]# cinder list +--------------------------------------+-----------+--------+------+-------------+----------+-------------+ | ID | Status | Name | Size | Volume Type | Bootable | Attached to | +--------------------------------------+-----------+--------+------+-------------+----------+-------------+ | 6d712520-5c99-4d59-8a12-c335c373f430 | available | disk01 | 10 | None | false | | +--------------------------------------+-----------+--------+------+-------------+----------+-------------+ |
| [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)]# nova list +-----------+----------+---------+------------+-------------+-----------------------------------+ | ID | Name | Status | Task State | Power State | Networks | +-----------+----------+---------+------------+-------------+-----------------------------------+ | 808634ec- | CentOS_7 | SHUTOFF | - | Shutdown | int_net=192.168.100.3, 10.0.0.201 | +-----------+----------+---------+------------+-------------+-----------------------------------+[root@dlp ~(keystone)]# nova volume-attach CentOS_7 6d712520-5c99-4d59-8a12-c335c373f430 auto +----------+--------------------------------------+ | Property | Value | +----------+--------------------------------------+ | device | /dev/vdb | | id | 6d712520-5c99-4d59-8a12-c335c373f430 | | serverId | 2c7a1025-30d6-446a-a4ff-309347b64eca | | volumeId | 6d712520-5c99-4d59-8a12-c335c373f430 | +----------+--------------------------------------+ # the status of attached disk turns "in-use" like follows [root@dlp ~(keystone)]# cinder list +--------------------------+--------+--------+------+-------------+----------+---------------------------+ | ID | Status | Name | Size | Volume Type | Bootable | Attached to | +--------------------------+--------+--------+------+-------------+----------+---------------------------+ | 6d712520-5c99-4d59-8a12- | in-use | disk01 | 10 | None | false | 2c7a1025-30d6-446a-a4ff-3 | +--------------------------+--------+--------+------+-------------+----------+---------------------------+ |
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