OpenStack Icehouse : Use Storage (NFS)2014/05/30 |
|
It's possible to use the Virtual Storage provided by Cinder
if an Instance needs more disks.
Configure Virtual storage with NFS on here.
+------------------+
10.0.0.35| [ Storage Node ] |
+------------------+ +-----+ Cinder-Volume |
| [ Control Node ] | | eth0| | +--------------+
| Keystone |10.0.0.30 | +------------------+ 10.0.0.40| |
| Glance |------------+------------------------------------+ NFS Server |
| Nova API |eth0 | +------------------+ eth0| |
| Cinder API | | eth0| [ Compute Node ] | +--------------+
+------------------+ +-----+ Nova Compute |
10.0.0.51| |
+------------------+
|
|
| [1] |
Because of using NFS, 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] | Configure Storage Node. |
|
root@storage:~#
apt-get -y install nfs-common
root@storage:~#
vi /etc/idmapd.conf # line 5: uncomment and change to the own domain name Domain = srv.world
root@storage:~#
initctl restart idmapd idmapd start/running, process 2493
root@storage:~#
vi /etc/cinder/cinder.conf # add follows in the [DEFAULT] section
volume_driver = cinder.volume.drivers.nfs.NfsDriver
nfs_shares_config = /etc/cinder/nfs_shares nfs_mount_point_base = /var/lib/cinder/mnt
root@storage:~#
vi /etc/cinder/nfs_shares # create new: specify NFS shared directories nfs.srv.world:/storage
root@storage:~#
root@storage:~# chmod 640 /etc/cinder/nfs_shares root@storage:~# chgrp cinder /etc/cinder/nfs_shares root@storage:~# mkdir /var/lib/cinder/mnt root@storage:~# chown cinder. /var/lib/cinder/mnt service cinder-volume restart cinder-volume stop/waiting cinder-volume start/running, process 2538 |
| [3] | Change Nova settings to mount with NFS. |
|
root@node01:~#
apt-get -y install nfs-common
root@node01:~#
vi /etc/idmapd.conf # line 5: uncomment and change to the own domain name Domain = srv.world
root@node01:~#
initctl restart idmapd idmapd start/running, process 3552
root@node01:~#
vi /etc/nova/nova.conf # add follows in the [DEFAULT] section volume_drivers="nfs=nova.virt.libvirt.volume.LibvirtNFSVolumeDriver" service nova-compute restart nova-compute stop/waiting nova-compute start/running, process 7537 |
| [4] | For example, create a virtual disk "disk01" with 10GB. It's OK to work on any node. (This example is on Control Node) |
|
[root@dlp ~(keystone)]# cinder create --display_name disk01 10
+---------------------+--------------------------------------+
| Property | Value |
+---------------------+--------------------------------------+
| attachments | [] |
| availability_zone | nova |
| bootable | false |
| created_at | 2014-05-30T12:48:10.824170 |
| display_description | None |
| display_name | disk01 |
| encrypted | False |
| id | f39bc9bf-b060-474f-b34c-f0d6e7761792 |
| metadata | {} |
| size | 10 |
| snapshot_id | None |
| source_volid | None |
| status | creating |
| volume_type | None |
+---------------------+--------------------------------------+
[root@dlp ~(keystone)]# cinder list +--------------------------------------+-----------+--------------+------+-------------+----------+-------------+ | ID | Status | Display Name | Size | Volume Type | Bootable | Attached to | +--------------------------------------+-----------+--------------+------+-------------+----------+-------------+ | f39bc9bf-b060-474f-b34c-f0d6e7761792 | available | disk01 | 10 | None | false | | +--------------------------------------+-----------+--------------+------+-------------+----------+-------------+ |
| [5] | Attach the virtual disk to an Instance. For the exmaple below, the disk is connected as "/dev/vdb". It's possible to use it as a storage to create a file system on it. |
|
[root@dlp ~(keystone)]# nova list +-----------+---------------+---------+------------+-------------+-----------------------+ | ID | Name | Status | Task State | Power State | Networks | +-----------+---------------+---------+------------+-------------+-----------------------+ | 3a597327- | Ubuntu_Trusty | SHUTOFF | - | Shutdown | sharednet1=10.0.0.205 | +-----------+---------------+---------+------------+-------------+-----------------------+[root@dlp ~(keystone)]# nova volume-attach Ubuntu_Trusty f39bc9bf-b060-474f-b34c-f0d6e7761792 auto +----------+--------------------------------------+ | Property | Value | +----------+--------------------------------------+ | device | /dev/vdb | | id | f39bc9bf-b060-474f-b34c-f0d6e7761792 | | serverId | 3a597327-9122-468d-a2f5-def0145eab52 | | volumeId | f39bc9bf-b060-474f-b34c-f0d6e7761792 | +----------+--------------------------------------+ |
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