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Merge pull request #2917 from leseb/rbd-update-glance-config
doc: update the OpenStack glance configuration Reviewed-by: Loic Dachary <ldachary@redhat.com>
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Loic Dachary
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0306cad406
@ -182,15 +182,41 @@ Configuring Glance
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------------------
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Glance can use multiple back ends to store images. To use Ceph block devices by
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default, edit ``/etc/glance/glance-api.conf`` and add::
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default, configure Glance like the following.
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default_store=rbd
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rbd_store_user=glance
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rbd_store_pool=images
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Prior to Juno
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~~~~~~~~~~~~~~
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If you want to enable copy-on-write cloning of images, also add::
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Edit ``/etc/glance/glance-api.conf`` and add under the ``[DEFAULT]`` section::
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show_image_direct_url=True
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default_store = rbd
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rbd_store_user = glance
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rbd_store_pool = images
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rbd_store_chunk_size = 8
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Juno
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~~~~
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Edit ``/etc/glance/glance-api.conf`` and add under the ``[glance_store]`` section::
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[glance_store]
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stores = rbd
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rbd_store_pool = images
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rbd_store_user = glance
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rbd_store_ceph_conf = /etc/ceph/ceph.conf
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rbd_store_chunk_size = 8
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For more information about the configuration options available in Glance please see: http://docs.openstack.org/trunk/config-reference/content/section_glance-api.conf.html.
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Any OpenStack version
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~~~~~~~~~~~~~~~~~~~~~
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If you want to enable copy-on-write cloning of images, also add under the ``[DEFAULT]`` section::
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show_image_direct_url = True
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Note that this exposes the back end location via Glance's API, so the endpoint
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with this option enabled should not be publicly accessible.
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@ -201,6 +227,7 @@ assuming your configuration file has ``flavor = keystone+cachemanagement``::
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[paste_deploy]
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flavor = keystone
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Configuring Cinder
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------------------
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@ -208,23 +235,23 @@ OpenStack requires a driver to interact with Ceph block devices. You must also
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specify the pool name for the block device. On your OpenStack node, edit
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``/etc/cinder/cinder.conf`` by adding::
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volume_driver=cinder.volume.drivers.rbd.RBDDriver
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rbd_pool=volumes
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rbd_ceph_conf=/etc/ceph/ceph.conf
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rbd_flatten_volume_from_snapshot=false
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rbd_max_clone_depth=5
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rbd_store_chunk_size=4
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rados_connect_timeout=-1
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glance_api_version=2
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volume_driver = cinder.volume.drivers.rbd.RBDDriver
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rbd_pool = volumes
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rbd_ceph_conf = /etc/ceph/ceph.conf
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rbd_flatten_volume_from_snapshot = false
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rbd_max_clone_depth = 5
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rbd_store_chunk_size = 4
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rados_connect_timeout = -1
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glance_api_version = 2
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If you're using `cephx authentication`_, also configure the user and uuid of
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the secret you added to ``libvirt`` as documented earlier::
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rbd_user=cinder
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rbd_secret_uuid=457eb676-33da-42ec-9a8c-9293d545c337
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rbd_user = cinder
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rbd_secret_uuid = 457eb676-33da-42ec-9a8c-9293d545c337
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Note that if you are configuring multiple cinder back ends,
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``glance_api_version=2`` must be in the ``[DEFAULT]`` section.
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``glance_api_version = 2`` must be in the ``[DEFAULT]`` section.
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Configuring Cinder Backup
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@ -233,14 +260,14 @@ Configuring Cinder Backup
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OpenStack Cinder Backup requires a specific daemon so don't forget to install it.
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On your Cinder Backup node, edit ``/etc/cinder/cinder.conf`` and add::
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backup_driver=cinder.backup.drivers.ceph
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backup_ceph_conf=/etc/ceph/ceph.conf
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backup_ceph_user=cinder-backup
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backup_ceph_chunk_size=134217728
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backup_ceph_pool=backups
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backup_ceph_stripe_unit=0
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backup_ceph_stripe_count=0
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restore_discard_excess_bytes=true
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backup_driver = cinder.backup.drivers.ceph
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backup_ceph_conf = /etc/ceph/ceph.conf
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backup_ceph_user = cinder-backup
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backup_ceph_chunk_size = 134217728
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backup_ceph_pool = backups
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backup_ceph_stripe_unit = 0
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backup_ceph_stripe_count = 0
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restore_discard_excess_bytes = true
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Configuring Nova to attach Ceph RBD block device
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@ -251,8 +278,8 @@ from volume), you must tell Nova (and libvirt) which user and UUID to refer to
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when attaching the device. libvirt will refer to this user when connecting and
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authenticating with the Ceph cluster. ::
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rbd_user=cinder
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rbd_secret_uuid=457eb676-33da-42ec-9a8c-9293d545c337
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rbd_user = cinder
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rbd_secret_uuid = 457eb676-33da-42ec-9a8c-9293d545c337
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These two flags are also used by the Nova ephemeral backend.
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@ -293,11 +320,11 @@ order to take advantage of the copy-on-write clone functionality.
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On every Compute node, edit ``/etc/nova/nova.conf`` and add::
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libvirt_images_type=rbd
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libvirt_images_rbd_pool=vms
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libvirt_images_rbd_ceph_conf=/etc/ceph/ceph.conf
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rbd_user=cinder
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rbd_secret_uuid=457eb676-33da-42ec-9a8c-9293d545c337
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libvirt_images_type = rbd
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libvirt_images_rbd_pool = vms
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libvirt_images_rbd_ceph_conf = /etc/ceph/ceph.conf
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rbd_user = cinder
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rbd_secret_uuid = 457eb676-33da-42ec-9a8c-9293d545c337
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It is also a good practice to disable file injection. While booting an
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instance, Nova usually attempts to open the rootfs of the virtual machine.
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@ -307,9 +334,9 @@ filesystem. However, it is better to rely on the metadata service and
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On every Compute node, edit ``/etc/nova/nova.conf`` and add::
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libvirt_inject_password=false
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libvirt_inject_key=false
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libvirt_inject_partition=-2
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libvirt_inject_password = false
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libvirt_inject_key = false
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libvirt_inject_partition = -2
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To ensure a proper live-migration, use the following flags::
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@ -324,11 +351,11 @@ On every Compute node, edit ``/etc/nova/nova.conf`` under the ``[libvirt]``
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section and add::
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[libvirt]
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images_type=rbd
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images_rbd_pool=vms
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images_rbd_ceph_conf=/etc/ceph/ceph.conf
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rbd_user=cinder
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rbd_secret_uuid=457eb676-33da-42ec-9a8c-9293d545c337
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images_type = rbd
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images_rbd_pool = vms
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images_rbd_ceph_conf = /etc/ceph/ceph.conf
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rbd_user = cinder
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rbd_secret_uuid = 457eb676-33da-42ec-9a8c-9293d545c337
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It is also a good practice to disable file injection. While booting an
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@ -340,9 +367,9 @@ filesystem. However, it is better to rely on the metadata service and
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On every Compute node, edit ``/etc/nova/nova.conf`` and add the following
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under the ``[libvirt]`` section::
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inject_password=false
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inject_key=false
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inject_partition=-2
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inject_password = false
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inject_key = false
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inject_partition = -2
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To ensure a proper live-migration, use the following flags::
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