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clear-linux-documentation/source/openstack_block_storage.rst
Munoz, Obed N be0f1b67cb Change to new swupd command format 
Signed-off-by: Munoz, Obed N <obed.n.munoz@intel.com>
2015-11-13 16:49:25 -06:00

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.. _openstack_block_storage:
Block Storage
########################
The OpenStack Block Storage service (cinder) adds persistent storage to
a virtual machine. Block Storage provides an infrastructure for managing
volumes, and interacts with OpenStack Compute to provide volumes for
instances. The service also enables management of volume snapshots, and
volume types.
Install and configure controller node
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This section describes how to install and configure the Block
Storage service, code-named cinder, on the controller node. This
service requires at least one additional storage node that provides
volumes to instances.
Prerequisites:
--------------
Before you install and configure the Block Storage service, you
#. To create the database, complete these steps:
* Use the database access client to connect to the database
server as the ``root`` user::
$ mysql -u root -p
* Create the ``cinder`` database::
CREATE DATABASE cinder;
* Grant proper access to the ``cinder`` database::
GRANT ALL PRIVILEGES ON cinder.* TO 'cinder'@'localhost' \
IDENTIFIED BY 'CINDER_DBPASS';
GRANT ALL PRIVILEGES ON cinder.* TO 'cinder'@'%' \
IDENTIFIED BY 'CINDER_DBPASS';
Replace ``CINDER_DBPASS`` with a suitable password.
* Exit the database access client.
#. Source the ``admin`` credentials to gain access to admin-only
CLI commands::
$ source admin-openrc.sh
#. To create the service credentials, complete these steps:
* Create a ``cinder`` user::
$ openstack user create --domain default --password-prompt cinder
User Password:
Repeat User Password:
+-----------+----------------------------------+
| Field | Value |
+-----------+----------------------------------+
| domain_id | default |
| enabled | True |
| id | bb279f8ffc444637af38811a5e1f0562 |
| name | cinder |
+-----------+----------------------------------+
* Add the ``admin`` role to the ``cinder`` user::
$ openstack role add --project service --user cinder admin
* Create the ``cinder`` and ``cinderv2`` service entities::
$ openstack service create --name cinder \
--description "OpenStack Block Storage" volume
+-------------+----------------------------------+
| Field | Value |
+-------------+----------------------------------+
| description | OpenStack Block Storage |
| enabled | True |
| id | ab3bbbef780845a1a283490d281e7fda |
| name | cinder |
| type | volume |
+-------------+----------------------------------+
$ openstack service create --name cinderv2 \
--description "OpenStack Block Storage" volumev2
+-------------+----------------------------------+
| Field | Value |
+-------------+----------------------------------+
| description | OpenStack Block Storage |
| enabled | True |
| id | eb9fd245bdbc414695952e93f29fe3ac |
| name | cinderv2 |
| type | volumev2 |
+-------------+----------------------------------+
.. note::
The Block Storage services requires two service entities.
#. Create the Block Storage service API endpoints::
$ openstack endpoint create --region RegionOne \
volume public http://controller:8776/v1/%\(tenant_id\)s
+--------------+-----------------------------------------+
| Field | Value |
+--------------+-----------------------------------------+
| enabled | True |
| id | 03fa2c90153546c295bf30ca86b1344b |
| interface | public |
| region | RegionOne |
| region_id | RegionOne |
| service_id | ab3bbbef780845a1a283490d281e7fda |
| service_name | cinder |
| service_type | volume |
| url | http://controller:8776/v1/%(tenant_id)s |
+--------------+-----------------------------------------+
$ openstack endpoint create --region RegionOne \
volume internal http://controller:8776/v1/%\(tenant_id\)s
+--------------+-----------------------------------------+
| Field | Value |
+--------------+-----------------------------------------+
| enabled | True |
| id | 94f684395d1b41068c70e4ecb11364b2 |
| interface | internal |
| region | RegionOne |
| region_id | RegionOne |
| service_id | ab3bbbef780845a1a283490d281e7fda |
| service_name | cinder |
| service_type | volume |
| url | http://controller:8776/v1/%(tenant_id)s |
+--------------+-----------------------------------------+
$ openstack endpoint create --region RegionOne \
volume admin http://controller:8776/v1/%\(tenant_id\)s
+--------------+-----------------------------------------+
| Field | Value |
+--------------+-----------------------------------------+
| enabled | True |
| id | 4511c28a0f9840c78bacb25f10f62c98 |
| interface | admin |
| region | RegionOne |
| region_id | RegionOne |
| service_id | ab3bbbef780845a1a283490d281e7fda |
| service_name | cinder |
| service_type | volume |
| url | http://controller:8776/v1/%(tenant_id)s |
+--------------+-----------------------------------------+
$ openstack endpoint create --region RegionOne \
volumev2 public http://controller:8776/v2/%\(tenant_id\)s
+--------------+-----------------------------------------+
| Field | Value |
+--------------+-----------------------------------------+
| enabled | True |
| id | 513e73819e14460fb904163f41ef3759 |
| interface | public |
| region | RegionOne |
| region_id | RegionOne |
| service_id | eb9fd245bdbc414695952e93f29fe3ac |
| service_name | cinderv2 |
| service_type | volumev2 |
| url | http://controller:8776/v2/%(tenant_id)s |
+--------------+-----------------------------------------+
$ openstack endpoint create --region RegionOne \
volumev2 internal http://controller:8776/v2/%\(tenant_id\)s
+--------------+-----------------------------------------+
| Field | Value |
+--------------+-----------------------------------------+
| enabled | True |
| id | 6436a8a23d014cfdb69c586eff146a32 |
| interface | internal |
| region | RegionOne |
| region_id | RegionOne |
| service_id | eb9fd245bdbc414695952e93f29fe3ac |
| service_name | cinderv2 |
| service_type | volumev2 |
| url | http://controller:8776/v2/%(tenant_id)s |
+--------------+-----------------------------------------+
$ openstack endpoint create --region RegionOne \
volumev2 admin http://controller:8776/v2/%\(tenant_id\)s
+--------------+-----------------------------------------+
| Field | Value |
+--------------+-----------------------------------------+
| enabled | True |
| id | e652cf84dd334f359ae9b045a2c91d96 |
| interface | admin |
| region | RegionOne |
| region_id | RegionOne |
| service_id | eb9fd245bdbc414695952e93f29fe3ac |
| service_name | cinderv2 |
| service_type | volumev2 |
| url | http://controller:8776/v2/%(tenant_id)s |
+--------------+-----------------------------------------+
.. note::
The Block Storage services requires endpoints for each service
entity.
Install and configure components
--------------------------------
#. Install OpenStack Block Storage Controller bundle::
# swupd bundle-add openstack-block-storage-controller
# swupd verify --fix
#. Custom configurations will be located at ``/etc/cinder``.
* Create ``/etc/cinder`` directory::
mkdir /etc/cinder
* Create empty cinder configuration file in
``/etc/cinder/cinder.conf``::
touch /etc/cinder/cinder.conf
#. Edit the ``/etc/cinder/cinder.conf`` file and complete the following
actions:
* In the ``[database]`` section, configure database access. Replace
``CINDER_DBPASS`` with the password you chose for the
database::
[database]
...
connection=mysql://cinder:CINDER_DBPASS@controller/cinder
* In the ``[DEFAULT]`` and ``[oslo_messaging_rabbit]`` section,
configure RabbitMQ message queue access. Replace ``RABBIT_PASS``
with the password you chose for the account in
RabbitMQ::
[DEFAULT]
...
rpc_backend = rabbit
[oslo_messaging_rabbit]
...
rabbit_host = controller
rabbit_userid = openstack
rabbit_password = RABBIT_PASS
* In the ``[DEFAULT]`` and ``[keystone_authtoken]`` sections, configure
Identity service access. Replace ``CINDER_PASS`` with the password you
chose for the ``cinder`` user in the Identity service.::
[DEFAULT]
...
auth_strategy = keystone
[keystone_authtoken]
...
auth_uri = http://controller:5000
auth_url = http://controller:35357
auth_plugin = password
project_domain_id = default
user_domain_id = default
project_name = service
username = cinder
password = CINDER_PASS
* In the ``[DEFAULT]`` section, configure the ``my_ip`` option to
use the management interface IP address of the controller node::
[DEFAULT]
...
my_ip = 10.0.0.11
#. Populate the Block Storage database::
# su -s /bin/sh -c "cinder-manage db sync" cinder
Configure Compute to use Block Storage
--------------------------------------
* Edit the ``/etc/nova/nova.conf`` file and add the following
to it::
[cinder]
os_region_name = RegionOne
Finalize installation
---------------------
#. Restart the Compute API service::
# systemctl restart uwsgi@nova-api.service
#. Start the Block Storage services and configure them to start when
the system boots::
# systemctl enable cinder-api cinder-scheduler
# systemctl start cinder-api cinder-scheduler
Install and configure a storage node
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This section describes how to install and configure storage nodes
for the Block Storage service. For simplicity, this configuration
references one storage node with an empty local block storage device.
The instructions use ``/dev/sdb``, but you can substitute a different
value for your particular node.
The service provisions logical volumes on this device using the
LVM driver and provides them to instances via iSCSI transport.
You can follow these instructions with minor modifications to
horizontally scale your environment with additional storage nodes.
Prerequisites
-------------
#. Install the openstack block storage bundle::
# swupd bundle-add openstack-block-storage
# swupd verify --fix
#. Create the LVM physical volume: ``/dev/sdb1`` If your system uses a
different device name, adjust these steps accordingly::
# pvcreate /dev/sdb1
Physical volume "/dev/sdb1" successfully created
#. Create the LVM volume group ``cinder-volumes``::
# vgcreate cinder-volumes /dev/sdb1
Volume group "cinder-volumes" successfully created
The Block Storage service creates logical volumes in this volume
group.
#. Only instances can access Block Storage volumes. However, the
underlying operating system manages the devices associated with the
volumes. By default, the LVM volume scanning tool scans the ``/dev``
directory for block storage devices that contain volumes. If projects
use LVM on their volumes, the scanning tool detects these volumes and
attempts to cache them which can cause a variety of problems with
both the underlying operating system and project volumes. You must
reconfigure LVM to scan only the devices that contain the
``cinder-volume`` volume group. Edit the ``/etc/lvm/lvm.conf`` file
and complete the following action:
* In the ``devices`` section, add a filter that accepts the
``/dev/sdb`` device and rejects all other devices::
devices {
filter = [ "a/sdb/", "r/.*/"]
}
Install and configure components
--------------------------------
#. Edit the ``/etc/cinder/cinder.conf`` file and complete the following
actions:
* In the ``[database]`` section, configure database access. Replace
``CINDER_DBPASS`` with the password you chose for the Block Storage
database::
[database]
...
connection = mysql://cinder:CINDER_DBPASS@controller/cinder
* In the ``[DEFAULT]`` and ``[oslo_messaging_rabbit]`` sections,
configure ``RabbitMQ`` message queue access. Replace ``RABBIT_PASS``
with the password you chose for the openstack account in
``RabbitMQ``::
[DEFAULT]
...
rpc_backend = rabbit
[oslo_messaging_rabbit]
...
rabbit_host = controller
rabbit_userid = openstack
rabbit_password = RABBIT_PASS
* In the ``[DEFAULT]`` and ``[keystone_authtoken]`` sections,
configure Identity service access. Replace ``CINDER_PASS`` with the
password you chose for the cinder user in the Identity service::
[DEFAULT]
...
auth_strategy = keystone
[keystone_authtoken]
...
auth_uri = http://controller:5000
auth_url = http://controller:35357
auth_plugin = password
project_domain_id = default
user_domain_id = default
project_name = service
username = cinder
password = CINDER_PASS
* In the ``[DEFAULT]`` section, configure the ``my_ip`` option.
Replace ``MANAGEMENT_INTERFACE_IP_ADDRESS`` with the IP address
of the management network interface on your storage node,
typically 10.0.0.41 for the first node in the example
architecture::
[DEFAULT]
...
my_ip = MANAGEMENT_INTERFACE_IP_ADDRESS
* In the ``[lvm]`` section, configure the LVM back end with the LVM
driver, ``cinder-volumes`` volume group, iSCSI protocol, and
appropriate iSCSI service::
[lvm]
...
volume_driver = cinder.volume.drivers.lvm.LVMVolumeDriver
volume_group = cinder-volumes
iscsi_protocol = iscsi
iscsi_helper = tgtadm
* In the ``[DEFAULT]`` section, enable the LVM back end::
[DEFAULT]
...
enabled_backends = lvm
* In the ``[DEFAULT]`` section, configure the location of the Image
service::
[DEFAULT]
...
glance_host = controller
#. Let systemd set the correct permissions for files in ``/etc/cinder``::
# systemctl restart update-triggers.target
Finalize installation
---------------------
#. Start the Block Storage volume service including its dependencies
and configure them to start when the system boots::
# systemctl enable iscsid tgtd cinder-volume
# systemctl start iscsid tgtd cinder-volume
Configuring a compute node to use Block Storage
-----------------------------------------------
#. Perform the following steps to enable a compute node to work with
block storage::
# systemctl enable iscsid
# systemctl start iscsi-gen-initiatorname iscsid
Verify operation
~~~~~~~~~~~~~~~~
Verify operation of the Block Storage service.
#. Source the ``admin`` credentials to gain access to
admin-only CLI commands::
$ source admin-openrc.sh
#. List service components to verify successful launch of each process::
$ cinder service-list
+------------------+------------+------+---------+-------+----------------------------+-----------------+
| Binary | Host | Zone | Status | State | Updated_at | Disabled Reason |
+------------------+------------+------+---------+-------+----------------------------+-----------------+
| cinder-scheduler | controller | nova | enabled | up | 2014-10-18T01:30:54.000000 | None |
| cinder-volume | block1@lvm | nova | enabled | up | 2014-10-18T01:30:57.000000 | None |
+------------------+------------+------+---------+-------+----------------------------+-----------------+
Next topic: :ref:`openstack_dashboard`.
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