OpenStack Xena : Use Cinder Storage (Multi-BackEnds)2021/11/23 |
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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.
------------+---------------------------+---------------------------+--------------+---
| | | |
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 | | Neutron Server | | Nova Compute | |
| Keystone Glance | | OVN-Northd | | Open vSwitch | |
| Nova API | | Cinder Volume | | OVN Metadata Agent | |
| Cinder API | | | | OVN-Controller | |
+-----------------------+ +-----------------------+ +-----------------------+ |
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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 local network, 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 ~]#
dnf -y install nfs-utils
[root@storage ~]#
vi /etc/idmapd.conf # line 5 : uncomment and change to your 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 directory # if set multiple share, write one per line 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 ~]#
dnf -y install nfs-utils
[root@node01 ~]#
vi /etc/idmapd.conf # line 5: uncomment and change to your domain name Domain = srv.world
[root@node01 ~]#
vi /etc/nova/nova.conf # add follows to the end [cinder] os_region_name = RegionOne
[root@node01 ~]#
systemctl restart openstack-nova-compute
# if SELinux is enabled, change policy like follows
[root@node01 ~]#
vi iscsiadm.te # create new
module iscsiadm 1.0;
require {
type iscsid_t;
class capability dac_override;
}
#============= iscsid_t ==============
allow iscsid_t self:capability dac_override;
checkmodule -m -M -o iscsiadm.mod iscsiadm.te [root@node01 ~]# semodule_package --outfile iscsiadm.pp --module iscsiadm.mod [root@node01 ~]# semodule -i iscsiadm.pp |
| [5] | Create volume types. It's OK to work on any node. (This example is on Control Node) |
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# set environment variable [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 | be465595-560a-494f-b58c-4668181c7b53 | | is_public | True | | name | lvm | +-------------+--------------------------------------+[root@dlp ~(keystone)]# openstack volume type create nfs +-------------+--------------------------------------+ | Field | Value | +-------------+--------------------------------------+ | description | None | | id | 678a4778-c698-4bc1-bf7a-428d8a857c14 | | is_public | True | | name | nfs | +-------------+--------------------------------------+[root@dlp ~(keystone)]# openstack volume type list +--------------------------------------+-------------+-----------+ | ID | Name | Is Public | +--------------------------------------+-------------+-----------+ | 678a4778-c698-4bc1-bf7a-428d8a857c14 | nfs | True | | be465595-560a-494f-b58c-4668181c7b53 | lvm | True | | 25806cc1-576d-4607-af2a-6a593e635c8d | __DEFAULT__ | 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 | 2021-11-24T01:50:39.352069 | | description | None | | encrypted | False | | id | 10f06321-ed3e-4ee7-9343-7fea2be1f57b | | 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 | 6a517543654044e8b4ea9e0eea0adaa4 | +---------------------+--------------------------------------+[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 | 2021-11-24T01:50:52.600715 | | description | None | | encrypted | False | | id | 26d98054-a7c3-46c8-855a-4c47c55689c9 | | 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 | 6a517543654044e8b4ea9e0eea0adaa4 | +---------------------+--------------------------------------+[cent@dlp ~(keystone)]$ openstack volume list +--------------------------------------+----------+-----------+------+-------------+ | ID | Name | Status | Size | Attached to | +--------------------------------------+----------+-----------+------+-------------+ | 26d98054-a7c3-46c8-855a-4c47c55689c9 | disk-nfs | available | 10 | | | 10f06321-ed3e-4ee7-9343-7fea2be1f57b | 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 | +--------------------------------------+-------------+---------+-------------------------------------+-----------------+----------+ | a6180855-77cf-476f-9f26-4fc79baa38c2 | CentOS-St-8 | SHUTOFF | private=10.0.0.250, 192.168.100.108 | CentOS-Stream-8 | m1.small | +--------------------------------------+-------------+---------+-------------------------------------+-----------------+----------+
[cent@dlp ~(keystone)]$
openstack server add volume CentOS-St-8 disk-lvm [cent@dlp ~(keystone)]$ openstack server add volume CentOS-St-8 disk-nfs
# the status of attached disk turns [in-use] like follows [cent@dlp ~(keystone)]$ openstack volume list +--------------------------------------+----------+--------+------+--------------------------------------+ | ID | Name | Status | Size | Attached to | +--------------------------------------+----------+--------+------+--------------------------------------+ | 26d98054-a7c3-46c8-855a-4c47c55689c9 | disk-nfs | in-use | 10 | Attached to CentOS-St-8 on /dev/vdc | | 10f06321-ed3e-4ee7-9343-7fea2be1f57b | disk-lvm | in-use | 10 | Attached to CentOS-St-8 on /dev/vdb | +--------------------------------------+----------+--------+------+--------------------------------------+ # detach the disk [cent@dlp ~(keystone)]$ openstack server remove volume CentOS-St-8 disk-lvm [cent@dlp ~(keystone)]$ openstack server remove volume CentOS-St-8 disk-nfs |
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