openstack-manuals/doc/config-reference/source/image/backends.rst

Configure back ends

The Image service supports several back ends for storing virtual machine images:

• Block Storage service (cinder)
• A directory on a local file system
• HTTP
• Ceph RBD
• Sheepdog
• Object Storage service (swift)
• VMware ESX

Note

You must use only raw image formats with the Ceph RBD back end.

The following tables detail the options available for each.

Configure vCenter data stores for the Image service back end

To use vCenter data stores for the Image service back end, you must update the glance-api.conf file, as follows:

• Add data store parameters to the VMware Datastore Store Options section.

• Specify vSphere as the back end.

  Note

  You must configure any configured Image service data stores for the Compute service.

You can specify vCenter data stores directly by using the data store name or Storage Policy Based Management (SPBM), which requires vCenter Server 5.5 or later. For details, see glance-backend-vmware-DS.

Note

If you intend to use multiple data stores for the back end, use the SPBM feature.

In the glance_store section, set the stores and default_store options to vsphere, as shown in this code sample:

[glance_store]
# List of stores enabled. Valid stores are: cinder, file, http, rbd,
# sheepdog, swift, s3, vsphere (list value)
stores = file,http,vsphere
# Which back end scheme should Glance use by default is not specified
# in a request to add a new image to Glance? Known schemes are determined
# by the known_stores option below.
# Default: 'file'
default_store = vsphere

The following table describes the parameters in the VMware Datastore Store Options section:

The following block of text shows a sample configuration:

# ============ VMware Datastore Store Options =====================
# ESX/ESXi or vCenter Server target system.
# The server value can be an IP address or a DNS name
# e.g. 127.0.0.1, 127.0.0.1:443, www.vmware-infra.com
vmware_server_host = 192.168.0.10

# Server username (string value)
vmware_server_username = ADMINISTRATOR

# Server password (string value)
vmware_server_password = password

# Inventory path to a datacenter (string value)
# Value optional when vmware_server_ip is an ESX/ESXi host: if specified
# should be `ha-datacenter`.
vmware_datacenter_path = DATACENTER

# Datastore associated with the datacenter (string value)
vmware_datastore_name = datastore1

# PBM service WSDL file location URL. e.g.
# file:///opt/SDK/spbm/wsdl/pbmService.wsdl Not setting this
# will disable storage policy based placement of images.
# (string value)
#vmware_pbm_wsdl_location =

# The PBM policy. If `pbm_wsdl_location` is set, a PBM policy needs
# to be specified. This policy will be used to select the datastore
# in which the images will be stored.
#vmware_pbm_policy =

# The interval used for polling remote tasks
# invoked on VMware ESX/VC server in seconds (integer value)
vmware_task_poll_interval = 5

# Absolute path of the folder containing the images in the datastore
# (string value)
vmware_store_image_dir = /openstack_glance

# Allow to perform insecure SSL requests to the target system (boolean value)
vmware_api_insecure = False

Configure vCenter data stores for the back end

You can specify a vCenter data store for the back end by setting the vmware_datastore_name parameter value to the vCenter name of the data store. This configuration limits the back end to a single data store.

If present, comment or delete the vmware_pbm_wsdl_location and vmware_pbm_policy parameters.

Uncomment and define the vmware_datastore_name parameter with the name of the vCenter data store.

Complete the other vCenter configuration parameters as appropriate.