# OpenStack Swift storage driver An implementation of the `storagedriver.StorageDriver` interface that uses [OpenStack Swift](http://docs.openstack.org/developer/swift/) for object storage. ## Parameters

Parameter	Required	Description
`authurl`	yes	URL for obtaining an auth token. https://storage.myprovider.com/v2.0 or https://storage.myprovider.com/v3/auth
`username`	yes	Your Openstack user name.
`password`	yes	Your Openstack password.
`region`	no	The Openstack region in which your container exists.
`container`	yes	The name of your Swift container where you wish to store the registry's data. The driver creates the named container during its initialization.
`tenant`	no	Your Openstack tenant name. You can either use `tenant` or `tenantid`.
`tenantid`	no	Your Openstack tenant id. You can either use `tenant` or `tenantid`.
`domain`	no	Your Openstack domain name for Identity v3 API. You can either use `domain` or `domainid`.
`domainid`	no	Your Openstack domain id for Identity v3 API. You can either use `domain` or `domainid`.
`trustid`	no	Your Openstack trust id for Identity v3 API.
`insecureskipverify`	no	true to skip TLS verification, false by default.
`chunksize`	no	Size of the data segments for the Swift Dynamic Large Objects. This value should be a number (defaults to 5M).
`prefix`	no	This is a prefix that will be applied to all Swift keys to allow you to segment data in your container if necessary. Defaults to the empty string which is the container's root.
`secretkey`	no	The secret key used to generate temporary URLs.
`accesskey`	no	The access key to generate temporary URLs. It is used by HP Cloud Object Storage in addition to the `secretkey` parameter.

`authurl`	URL for obtaining an auth token.
`username`	Your OpenStack user name.
`password`	Your OpenStack password.
`container`	The name of your Swift container where you wish to store the registry's data. The driver creates the named container during its initialization.
`tenant`	Optionally, your OpenStack tenant name. You can either use `tenant` or `tenantid`.
`tenantid`	Optionally, your OpenStack tenant id. You can either use `tenant` or `tenantid`.
`domain`	Optionally, your OpenStack domain name for Identity v3 API. You can either use `domain` or `domainid`.
`domainid`	Optionally, your OpenStack domain id for Identity v3 API. You can either use `domain` or `domainid`.
`trustid`	Optionally, your OpenStack trust id for Identity v3 API.
`insecureskipverify`	Optionally, set `insecureskipverify` to true to skip TLS verification for your OpenStack provider. The driver uses false by default.
`region`	Optionally, specify the OpenStack region name in which you would like to store objects (for example `fr`).
`authversion`	Optionally, specify the OpenStack Auth's version,for example `3`. The driver use 0 (autodetect) by default.
`chunksize`	Optionally, specify the segment size for Dynamic Large Objects uploads (performed by WriteStream) to Swift. The default is 5 MB. You might experience better performance for larger chunk sizes depending on the speed of your connection to Swift.
`prefix`	Optionally, supply a prefix that will be applied to all Swift keys to allow you to segment data in your container if necessary. Defaults to the empty string which is the container's root.
`secretkey`	Optionally, the secret key used to generate temporary URLs.
`accesskey`	Optionally, the access key to generate temporary URLs. It is used by HP Cloud Object Storage in addition to the `secretkey` parameter.

The features supported by the Swift server are queried by requesting the `/info` URL on the server. In case the administrator disabled that feature, the configuration file can specify the following optional parameters :

tempurlcontainerkey

Specify whether to use container secret key to generate temporary URL when set to true, or the account secret key otherwise.

tempurlmethods

Array of HTTP methods that are supported by the TempURL middleware of the Swift server. Example:


    - tempurlmethods:
      - GET
      - PUT
      - HEAD
      - POST
      - DELETE