OpenStack Stein : Use Cinder Storage (Multi-Backend)2019/04/15 |
|
It's possible to use Virtual Storages provided by Cinder if an Instance needs more disks.
Configure Virtual storage with LVM and NFS Multi-Backend on here.
------------+-------------------------+-------------------------+-------------+---
| | | |
eth0|10.0.0.30 eth0|10.0.0.50 eth0|10.0.0.51 |
+-----------+-----------+ +-----------+-----------+ +-----------+-----------+ |
| [ Control Node ] | | [ Storage Node ] | | [ Compute Node ] | |
| | | | | | |
| MariaDB RabbitMQ | | | | Libvirt | |
| Memcached httpd | | L2 Agent | | Nova Compute | |
| Keystone Glance | | L3 Agent | | L2 Agent | |
| Nova API | | Metadata Agent | | | |
| Neutron Server | | Cinder Volume | | | |
| Metadata Agent | | | | | |
| Cinder API | | | | | |
+-----------------------+ +-----------------------+ +-----------------------+ |
-----------+------------------------------------------------------------------+
eth0|10.0.0.35
+----------+-----------+
| [ NFS Server ] |
| |
+----------------------+
|
| [1] |
For LVM backend on this example, use a volume group [vg_volume01] for it.
|
| [2] |
NFS server is required to be running on your LAN, refer to here.
On this example, configure [/var/lib/nfs-share] directory on [nfs.srv.world] as a shared directory. |
| [3] | Configure Storage Node. |
|
root@storage:~#
apt -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:~#
vi /etc/cinder/cinder.conf # add the value for enabled_backends enabled_backends = lvm,nfs # add follows to the end [lvm] target_helper = tgtadm target_protocol = iscsi # IP address of Storage Node target_ip_address = 10.0.0.50 volume_backend_name = LVM # volume group name just created volume_group = vg_volume01 volume_driver = cinder.volume.drivers.lvm.LVMVolumeDriver volumes_dir = $state_path/volumes [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
root@storage:~#
vi /etc/cinder/nfs_shares # create new : specify NFS shared directories nfs.srv.world:/var/lib/nfs-share chmod 640 /etc/cinder/nfs_shares root@storage:~# chgrp cinder /etc/cinder/nfs_shares root@storage:~# systemctl restart cinder-volume root@storage:~# chown -R cinder. /var/lib/cinder/mnt_nfs
|
| [4] | Configure Compute Node. |
|
root@node01:~#
apt -y install nfs-common
root@node01:~#
vi /etc/idmapd.conf # line 6: 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 nova-compute |
| [5] | Create volume types. It's OK to work on any node. (This example is on Control Node) |
|
# set environment variable first root@dlp ~(keystone)# echo "export OS_VOLUME_API_VERSION=3" >> ~/keystonerc root@dlp ~(keystone)# source ~/keystonerc
openstack volume type create lvm +-------------+--------------------------------------+ | Field | Value | +-------------+--------------------------------------+ | description | None | | id | 32a21f9c-2203-4f9c-9440-99a95f723b06 | | is_public | True | | name | lvm | +-------------+--------------------------------------+root@dlp ~(keystone)# openstack volume type create nfs +-------------+--------------------------------------+ | Field | Value | +-------------+--------------------------------------+ | description | None | | id | 6a0e24b7-007f-464e-a49e-0a10405ae67a | | is_public | True | | name | nfs | +-------------+--------------------------------------+root@dlp ~(keystone)# openstack volume type list +--------------------------------------+------+-----------+ | ID | Name | Is Public | +--------------------------------------+------+-----------+ | 6a0e24b7-007f-464e-a49e-0a10405ae67a | nfs | True | | 32a21f9c-2203-4f9c-9440-99a95f723b06 | lvm | True | +--------------------------------------+------+-----------+ |
| [6] | Login as a common user you'd like to add volumes to own instances. |
|
# set environment variable first ubuntu@dlp ~(keystone)$ echo "export OS_VOLUME_API_VERSION=3" >> ~/keystonerc ubuntu@dlp ~(keystone)$ source ~/keystonerc
openstack volume create --type lvm --size 10 disk_lvm +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | attachments | [] | | availability_zone | nova | | bootable | false | | consistencygroup_id | None | | created_at | 2019-04-15T02:25:51.000000 | | description | None | | encrypted | False | | id | 8639fcfe-4566-4d3f-867d-afef7724599a | | multiattach | False | | name | disk_lvm | | properties | | | replication_status | None | | size | 10 | | snapshot_id | None | | source_volid | None | | status | creating | | type | lvm | | updated_at | None | | user_id | 5ed13a6b898b412383faf11ab2099a66 | +---------------------+--------------------------------------+ubuntu@dlp ~(keystone)$ openstack volume create --type nfs --size 10 disk_nfs +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | attachments | [] | | availability_zone | nova | | bootable | false | | consistencygroup_id | None | | created_at | 2019-04-15T02:26:10.000000 | | description | None | | encrypted | False | | id | 9c73b18d-7bcf-4151-b8f3-4e70f35e2aea | | multiattach | False | | name | disk_nfs | | properties | | | replication_status | None | | size | 10 | | snapshot_id | None | | source_volid | None | | status | creating | | type | nfs | | updated_at | None | | user_id | 5ed13a6b898b412383faf11ab2099a66 | +---------------------+--------------------------------------+ubuntu@dlp ~(keystone)$ openstack volume list +--------------------------------------+----------+-----------+------+-------------+ | ID | Name | Status | Size | Attached to | +--------------------------------------+----------+-----------+------+-------------+ | 9c73b18d-7bcf-4151-b8f3-4e70f35e2aea | disk_nfs | available | 10 | | | 8639fcfe-4566-4d3f-867d-afef7724599a | disk_lvm | available | 10 | | +--------------------------------------+----------+-----------+------+-------------+ |
| [7] | Attache volume to an instance. |
|
ubuntu@dlp ~(keystone)$ openstack server list +--------------------------------------+-------------+---------+-------------------------------------+------------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+-------------+---------+-------------------------------------+------------+----------+ | c714d070-f035-42b8-9660-999088da37b1 | Ubuntu_1804 | SHUTOFF | int_net=192.168.100.136, 10.0.0.202 | Ubuntu1804 | m1.small | +--------------------------------------+-------------+---------+-------------------------------------+------------+----------+
ubuntu@dlp ~(keystone)$
openstack server add volume Ubuntu_1804 disk_lvm ubuntu@dlp ~(keystone)$ openstack server add volume Ubuntu_1804 disk_nfs
# the status of attached disk turns [in-use] like follows ubuntu@dlp ~(keystone)$ openstack volume list +--------------------------------------+----------+--------+------+--------------------------------------+ | ID | Name | Status | Size | Attached to | +--------------------------------------+----------+--------+------+--------------------------------------+ | 9c73b18d-7bcf-4151-b8f3-4e70f35e2aea | disk_nfs | in-use | 10 | Attached to Ubuntu_1804 on /dev/vdc | | 8639fcfe-4566-4d3f-867d-afef7724599a | disk_lvm | in-use | 10 | Attached to Ubuntu_1804 on /dev/vdb | +--------------------------------------+----------+--------+------+--------------------------------------+ # for detaching the disk,run like follows ubuntu@dlp ~(keystone)$ openstack server remove volume Ubuntu_1804 disk_lvm ubuntu@dlp ~(keystone)$ openstack server remove volume Ubuntu_1804 disk_nfs |
| Sponsored Link |
|
|