OpenStack Antelope : Use Cinder Storage (NFS)2023/04/19 |
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It's possible to use Virtual Storages provided by Cinder if an Instance needs more disks.
Configure Virtual storage with NFS backend on here.
------------+--------------------------+--------------------------+------------
| | |
eth0|10.0.0.30 eth0|10.0.0.50 eth0|10.0.0.51
+-----------+-----------+ +-----------+-----------+ +-----------+-----------+
| [ dlp.srv.world ] | | [ network.srv.world ] | | [ node01.srv.world ] |
| (Control Node) | | (Network Node) | | (Compute Node) |
| | | | | |
| MariaDB RabbitMQ | | Open vSwitch | | Libvirt |
| Memcached Nginx | | Neutron Server | | Nova Compute |
| Keystone httpd | | OVN-Northd | | Open vSwitch |
| Glance Nova API | | Nginx iSCSI Target | | OVN Metadata Agent |
| Cinder API | | Cinder Volume | | OVN-Controller |
+-----------------------+ +-----------------------+ +-----------------------+
-----------+-------------------------------------------------------------------
eth0|10.0.0.35
+----------+-----------+
| [ nfs.srv.world ] |
| NFS Server |
+----------------------+
|
| [1] |
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. |
| [2] | Configure Storage Node. |
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[root@network ~]#
dnf -y install nfs-utils
[root@network ~]#
vi /etc/idmapd.conf # line 5 : uncomment and change to your domain name Domain = srv.world
[root@network ~]#
vi /etc/cinder/cinder.conf # add follows in [DEFAULT] section enabled_backends = nfs # add follows to the end [nfs] volume_driver = cinder.volume.drivers.nfs.NfsDriver nfs_shares_config = /etc/cinder/nfs_shares nfs_mount_point_base = $state_path/mnt
[root@network ~]#
vi /etc/cinder/nfs_shares # create new : specify NFS shared directory # if set multiple share, write one per line nfs.srv.world:/var/lib/nfs-share chmod 640 /etc/cinder/nfs_shares [root@network ~]# chgrp cinder /etc/cinder/nfs_shares [root@network ~]# systemctl restart openstack-cinder-volume [root@network ~]# chown -R cinder. /var/lib/cinder/mnt |
| [3] | Change Nova settings on Compute Node to mount NFS. |
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[root@node01 ~]#
dnf -y install nfs-utils
[root@node01 ~]#
vi /etc/idmapd.conf # line 5 : uncomment and change to your domain name Domain = srv.world
[root@node01 ~]#
vi /etc/iscsi/initiatorname.iscsi # create new # set any InitiatorName you like InitiatorName=iqn.2023-04.world.srv:node01.initiator01
[root@node01 ~]#
vi /etc/nova/nova.conf # add to the end [cinder] os_region_name = RegionOne
[root@node01 ~]#
systemctl restart openstack-nova-compute
# if SELinux is enabled, change policy like follows
[root@node01 ~]#
vi iscsiadm.te # create new
module iscsiadm 1.0;
require {
type iscsid_t;
class capability dac_override;
}
#============= iscsid_t ==============
allow iscsid_t self:capability dac_override;
checkmodule -m -M -o iscsiadm.mod iscsiadm.te [root@node01 ~]# semodule_package --outfile iscsiadm.pp --module iscsiadm.mod [root@node01 ~]# semodule -i iscsiadm.pp |
| [4] | Login as a common user you'd like to add volumes to own instances. For example, create a virtual disk [disk01] with 10GB. It's OK to work on any node. (example below is on Control Node) |
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# set environment variable [cent@dlp ~(keystone)]$ echo "export OS_VOLUME_API_VERSION=3" >> ~/keystonerc [cent@dlp ~(keystone)]$ source ~/keystonerc
openstack volume create --size 10 disk01 +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | attachments | [] | | availability_zone | nova | | bootable | false | | consistencygroup_id | None | | created_at | 2023-04-19T01:34:07.137742 | | description | None | | encrypted | False | | id | db3aeb40-785b-4fcb-a2fc-aa43f8c28f7e | | multiattach | False | | name | disk01 | | properties | | | replication_status | None | | size | 10 | | snapshot_id | None | | source_volid | None | | status | creating | | type | __DEFAULT__ | | updated_at | None | | user_id | 3c87f0d4e2e6413aa110a4240357cd97 | +---------------------+--------------------------------------+[cent@dlp ~(keystone)]$ openstack volume list +--------------------------------------+--------+-----------+------+-------------+ | ID | Name | Status | Size | Attached to | +--------------------------------------+--------+-----------+------+-------------+ | db3aeb40-785b-4fcb-a2fc-aa43f8c28f7e | disk01 | available | 10 | | +--------------------------------------+--------+-----------+------+-------------+ |
| [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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[cent@dlp ~(keystone)]$ openstack server list +--------------------------------------+------------+---------+-------------------------------------+----------------+-----------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+------------+---------+-------------------------------------+----------------+-----------+ | 284a5b69-7b76-49c3-8180-c9b22284d429 | CentOS-St9 | SHUTOFF | private=10.0.0.229, 192.168.100.140 | CentOS-Stream9 | m1.medium | +--------------------------------------+------------+---------+-------------------------------------+----------------+-----------+[cent@dlp ~(keystone)]$ openstack server add volume CentOS-St9 disk01 +-----------------------+--------------------------------------+ | Field | Value | +-----------------------+--------------------------------------+ | ID | db3aeb40-785b-4fcb-a2fc-aa43f8c28f7e | | Server ID | 284a5b69-7b76-49c3-8180-c9b22284d429 | | Volume ID | db3aeb40-785b-4fcb-a2fc-aa43f8c28f7e | | Device | /dev/vdb | | Tag | None | | Delete On Termination | False | +-----------------------+--------------------------------------+ # the status of attached disk turns [in-use] like follows [cent@dlp ~(keystone)]$ openstack volume list +--------------------------------------+--------+--------+------+-------------------------------------+ | ID | Name | Status | Size | Attached to | +--------------------------------------+--------+--------+------+-------------------------------------+ | db3aeb40-785b-4fcb-a2fc-aa43f8c28f7e | disk01 | in-use | 10 | Attached to CentOS-St9 on /dev/vdb | +--------------------------------------+--------+--------+------+-------------------------------------+ # detach the disk [cent@dlp ~(keystone)]$ openstack server remove volume CentOS-St9 disk01 |
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