OpenStack Rocky : Cinder Storage (Multi-BackEnds)2018/09/04 |
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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.
------------+-------------------------+-------------------------+-------------+---
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eth0|10.0.0.30 eth0|10.0.0.50 eth0|10.0.0.51 |
+-----------+-----------+ +-----------+-----------+ +-----------+-----------+ |
| [ Control Node ] | | [ Storage Node ] | | [ Compute Node ] | |
| | | | | | |
| MariaDB RabbitMQ | | Open vSwitch | | Libvirt | |
| Memcached httpd | | L2 Agent | | Nova Compute | |
| Keystone Glance | | L3 Agent | | Open vSwitch | |
| Nova API | | Metadata Agent | | L2 Agent | |
| Neutron Server | | Cinder-Volume | | | |
| Metadata Agent | | | | | |
| Cinder API | | | | | |
+-----------------------+ +-----------------------+ +-----------------------+ |
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------------+-----------------------------------------------------------------+
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eth0|10.0.0.35
+----------+-----------+
| [ NFS Server ] |
| |
+----------------------+
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| [1] |
For LVM backend on this example, use a volume group [vg_volume01] for it.
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| [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. |
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[root@storage ~]#
yum -y install nfs-utils
[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 follows in the [DEFAULT] section enabled_backends = lvm,nfs # add follows to the end [lvm] target_helper = lioadm target_protocol = iscsi # IP address of Storage Node target_ip_address = 10.0.0.50 volume_backend_name = LVM # volume group name 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 openstack-cinder-volume [root@storage ~]# chown -R cinder. /var/lib/cinder/mnt_nfs |
| [4] | Configure Compute Node. |
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[root@node01 ~]#
yum -y install nfs-utils
[root@node01 ~]#
vi /etc/idmapd.conf # line 5: 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 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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# first, with root priviledge, downgrade Cinder Client to Queens release version # because it's impossible to run [Volume Create] with current version [python2-cinderclient-4.0.1] [root@dlp ~(keystone)]# rpm -q python2-cinderclient python2-cinderclient-4.0.1-1.el7.noarch [root@dlp ~(keystone)]# curl -O http://ftp.jaist.ac.jp/pub/Linux/CentOS/7/cloud/x86_64/openstack-queens/python2-cinderclient-3.5.0-1.el7.noarch.rpm
[root@dlp ~(keystone)]#
rpm -Uvh --oldpackage python2-cinderclient-3.5.0-1.el7.noarch.rpm
# 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 | f0938eab-840c-4fa5-a07f-e743f9cfd71f | | is_public | True | | name | lvm | +-------------+--------------------------------------+[root@dlp ~(keystone)]# openstack volume type create nfs +-------------+--------------------------------------+ | Field | Value | +-------------+--------------------------------------+ | description | None | | id | 9f8fbe90-465e-4cd8-8277-d45582de4d67 | | is_public | True | | name | nfs | +-------------+--------------------------------------+[root@dlp ~(keystone)]# openstack volume type list +--------------------------------------+------+-----------+ | ID | Name | Is Public | +--------------------------------------+------+-----------+ | 9f8fbe90-465e-4cd8-8277-d45582de4d67 | nfs | True | | f0938eab-840c-4fa5-a07f-e743f9cfd71f | lvm | True | +--------------------------------------+------+-----------+ |
| [6] | Login as a common user you'd like to add volumes to own instances. |
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[cent@dlp ~(keystone)]$ openstack volume create --type lvm --size 10 disk_lvm +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | attachments | [] | | availability_zone | nova | | bootable | false | | consistencygroup_id | None | | created_at | 2018-09-04T01:47:53.000000 | | description | None | | encrypted | False | | id | de2133b4-63e2-483f-8c67-dbdda2a294ad | | 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 | e2252ff04be3409e8e823a0a3a925cad | +---------------------+--------------------------------------+[cent@dlp ~(keystone)]$ openstack volume create --type nfs --size 10 disk_nfs +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | attachments | [] | | availability_zone | nova | | bootable | false | | consistencygroup_id | None | | created_at | 2018-09-04T01:48:10.000000 | | description | None | | encrypted | False | | id | fa514009-7c5e-4a6e-81e1-442ec4547baf | | 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 | e2252ff04be3409e8e823a0a3a925cad | +---------------------+--------------------------------------+[cent@dlp ~(keystone)]$ openstack volume list +--------------------------------------+----------+-----------+------+-------------+ | ID | Name | Status | Size | Attached to | +--------------------------------------+----------+-----------+------+-------------+ | fa514009-7c5e-4a6e-81e1-442ec4547baf | disk_nfs | available | 10 | | | de2133b4-63e2-483f-8c67-dbdda2a294ad | disk_lvm | available | 10 | | +--------------------------------------+----------+-----------+------+-------------+ |
| [7] | Attache volume to an instance. |
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[cent@dlp ~(keystone)]$ openstack server list +--------------------------------------+----------+---------+-----------------------------------+---------+----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+----------+---------+-----------------------------------+---------+----------+ | 5b30f928-8834-4ab5-a5ce-760c48d4c9b7 | CentOS_7 | SHUTOFF | int_net=192.168.100.3, 10.0.0.220 | CentOS7 | m1.small | +--------------------------------------+----------+---------+-----------------------------------+---------+----------+
[cent@dlp ~(keystone)]$
openstack server add volume CentOS_7 disk_lvm [cent@dlp ~(keystone)]$ openstack server add volume CentOS_7 disk_nfs
# the status of attached disk turns [in-use] like follows [cent@dlp ~(keystone)]$ openstack volume list +--------------------------------------+----------+--------+------+-----------------------------------+ | ID | Name | Status | Size | Attached to | +--------------------------------------+----------+--------+------+-----------------------------------+ | fa514009-7c5e-4a6e-81e1-442ec4547baf | disk_nfs | in-use | 10 | Attached to CentOS_7 on /dev/vdc | | de2133b4-63e2-483f-8c67-dbdda2a294ad | disk_lvm | in-use | 10 | Attached to CentOS_7 on /dev/vdb | +--------------------------------------+----------+--------+------+-----------------------------------+ # detach the disk [cent@dlp ~(keystone)]$ openstack server remove volume CentOS_7 disk_lvm [cent@dlp ~(keystone)]$ openstack server remove volume CentOS_7 disk_nfs |
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