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The image service supports several different backends for storing virtual machine images, including Cinder, a directory on a local file system, GridFS, Ceph RBD, Amazon S3, Sheepdog, OpenStack Object Storage or VMWare ESX. The following tables detail the options available for each.
| Configuration option = Default value | Description |
|---|---|
| [DEFAULT] | |
| cinder_api_insecure = False | (BoolOpt) Allow to perform insecure SSL requests to cinder. |
| cinder_ca_certificates_file = None | (StrOpt) Location of CA certicates file to use for cinder client requests. |
| cinder_catalog_info = volume:cinder:publicURL | (StrOpt) Info to match when looking for cinder in the service catalog. Format is: separated values of the form: <service_type>:<service_name>:<endpoint_type>. |
| cinder_endpoint_template = None | (StrOpt) Override service catalog lookup with template for cinder endpoint e.g. http://localhost:8776/v1/%(project_id)s. |
| cinder_http_retries = 3 | (IntOpt) Number of cinderclient retries on failed http calls. |
| Configuration option = Default value | Description |
|---|---|
| [DEFAULT] | |
| filesystem_store_datadir = None | (StrOpt) Directory to which the Filesystem backend store writes images. |
| filesystem_store_datadirs = None | (MultiStrOpt) List of directories and its priorities to which the Filesystem backend store writes images. |
| filesystem_store_metadata_file = None | (StrOpt) The path to a file which contains the metadata to be returned with any location associated with this store. The file must contain a valid JSON dict. |
| Configuration option = Default value | Description |
|---|---|
| [DEFAULT] | |
| mongodb_store_db = None | (StrOpt) Database to use. |
| mongodb_store_uri = None | (StrOpt) Hostname or IP address of the instance to connect to, or a mongodb URI, or a list of hostnames / mongodb URIs. If host is an IPv6 literal it must be enclosed in '[' and ']' characters following the RFC2732 URL syntax (e.g. '[::1]' for localhost). |
| Configuration option = Default value | Description |
|---|---|
| [DEFAULT] | |
| rbd_store_ceph_conf = /etc/ceph/ceph.conf | (StrOpt) Ceph configuration file path. If <None>, librados will locate the default config. If using cephx authentication, this file should include a reference to the right keyring in a client.<USER> section. |
| rbd_store_chunk_size = 8 | (IntOpt) RADOS images will be chunked into objects of this size (in megabytes). For best performance, this should be a power of two. |
| rbd_store_pool = images | (StrOpt) RADOS pool in which images are stored. |
| rbd_store_user = None | (StrOpt) RADOS user to authenticate as (only applicable if using Cephx. If <None>, a default will be chosen based on the client. section in rbd_store_ceph_conf). |
| Configuration option = Default value | Description |
|---|---|
| [DEFAULT] | |
| s3_store_access_key = None | (StrOpt) The S3 query token access key. |
| s3_store_bucket = None | (StrOpt) The S3 bucket to be used to store the Glance data. |
| s3_store_bucket_url_format = subdomain | (StrOpt) The S3 calling format used to determine the bucket. Either subdomain or path can be used. |
| s3_store_create_bucket_on_put = False | (BoolOpt) A boolean to determine if the S3 bucket should be created on upload if it does not exist or if an error should be returned to the user. |
| s3_store_host = None | (StrOpt) The host where the S3 server is listening. |
| s3_store_object_buffer_dir = None | (StrOpt) The local directory where uploads will be staged before they are transferred into S3. |
| s3_store_secret_key = None | (StrOpt) The S3 query token secret key. |
| Configuration option = Default value | Description |
|---|---|
| [DEFAULT] | |
| sheepdog_store_address = 127.0.0.1 | (StrOpt) IP address of sheep daemon. |
| sheepdog_store_chunk_size = 64 | (IntOpt) Images will be chunked into objects of this size (in megabytes). For best performance, this should be a power of two. |
| sheepdog_store_port = 7000 | (IntOpt) Port of sheep daemon. |
| Configuration option = Default value | Description |
|---|---|
| [DEFAULT] | |
| swift_enable_snet = False | (BoolOpt) Whether to use ServiceNET to communicate with the Swift storage servers. |
| swift_store_admin_tenants = | (ListOpt) A list of tenants that will be granted read/write access on all Swift containers created by Glance in multi-tenant mode. |
| swift_store_auth_address = None | (StrOpt) The address where the Swift authentication service is listening. |
| swift_store_auth_insecure = False | (BoolOpt) If True, swiftclient won't check for a valid SSL certificate when authenticating. |
| swift_store_auth_version = 2 | (StrOpt) Version of the authentication service to use. Valid versions are 2 for keystone and 1 for swauth and rackspace. |
| swift_store_container = glance | (StrOpt) Container within the account that the account should use for storing images in Swift. |
| swift_store_create_container_on_put = False | (BoolOpt) A boolean value that determines if we create the container if it does not exist. |
| swift_store_endpoint_type = publicURL | (StrOpt) A string giving the endpoint type of the swift service to use (publicURL, adminURL or internalURL). This setting is only used if swift_store_auth_version is 2. |
| swift_store_key = None | (StrOpt) Auth key for the user authenticating against the Swift authentication service. |
| swift_store_large_object_chunk_size = 200 | (IntOpt) The amount of data written to a temporary disk buffer during the process of chunking the image file. |
| swift_store_large_object_size = 5120 | (IntOpt) The size, in MB, that Glance will start chunking image files and do a large object manifest in Swift. |
| swift_store_multi_tenant = False | (BoolOpt) If set to True, enables multi-tenant storage mode which causes Glance images to be stored in tenant specific Swift accounts. |
| swift_store_region = None | (StrOpt) The region of the swift endpoint to be used for single tenant. This setting is only necessary if the tenant has multiple swift endpoints. |
| swift_store_retry_get_count = 0 | (IntOpt) The number of times a Swift download will be retried before the request fails. |
| swift_store_service_type = object-store | (StrOpt) A string giving the service type of the swift service to use. This setting is only used if swift_store_auth_version is 2. |
| swift_store_ssl_compression = True | (BoolOpt) If set to False, disables SSL layer compression of https swift requests. Setting to False may improve performance for images which are already in a compressed format, eg qcow2. |
| swift_store_user = None | (StrOpt) The user to authenticate against the Swift authentication service. |
