config-fields-storage-fields.adoc

Image storage configuration fields

The following table describes the image storage configuration fields for {productname}:

Table 1. Storage config fields

Field	Type	Description
DISTRIBUTED_STORAGE_CONFIG (Required)	Object	Configuration for storage engine(s) to use in {productname}. Each key represents an unique identifier for a storage engine. The value consists of a tuple of (key, value) forming an object describing the storage engine parameters. Default: []
DISTRIBUTED_STORAGE_DEFAULT_LOCATIONS (Required)	Array of string	The list of storage engine(s) (by ID in DISTRIBUTED_STORAGE_CONFIG) whose images should be fully replicated, by default, to all other storage engines.
DISTRIBUTED_STORAGE_PREFERENCE (Required)	Array of string	The preferred storage engine(s) (by ID in DISTRIBUTED_STORAGE_CONFIG) to use. A preferred engine means it is first checked for pulling and images are pushed to it. Default: false
MAXIMUM_LAYER_SIZE	String	Maximum allowed size of an image layer. Pattern: ^[0-9]+(G|M)$ Example: 100G Default: 20G