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Remote Storage

Remote storage engine allows to store files on remote storage. For now the following storage engines are supported:

  • Local - files are stored locally in storage folder
  • S3 - Amazon S3 compatible storage with signature v2 authorisation
  • S3v4 - Amazon S3 compatible storage with signature v4 authorisation
  • S3v4alt - Amazon S3 compatible storage with signature v2 or v4 authorisation, use this storage only when others don't work, since it reuploads file to the storage when file privacy is changed, when v4 signature is used then it will work with Amazon S3 storage only, if other than Amazon S3 storage is used then it will switch to v2 anyway.

Storage engine can be changed in Studio > Settings > Storage:

  • Default storage engine - storage engine to use by default, when changing this setting, then storage engine is changed for storage objects which don't have any files uploaded, if storage object has some files uploaded then manual files transfer to the new storage engine is required, after manual transfer is completed then manually change engine for the storage object in engine field in sys_objects_storage table. Note that when transferring data from Local to S3 or S3v4 you need to make all files public to make it accessible, however all newly uploaded files will be marked as private for private ones.
  • AWS access key - access key provided by storage engine, for S3, S3v4 and S3v4alt only.
  • AWS secret key - secret key provided by storage engine, for S3, S3v4 and S3v4alt only.
  • AWS bucket - bucket name, for S3, S3v4 and S3v4alt only.
  • AWS custom domain - custom domain to use for file URLs, requires proper DNS setup on your custom domain, leave empty for default domain from particular storage engine, for S3 and S3v4 only.
  • Endpoint - particular storage endpoint domain, for Amazon leave empty, for Google storage use storage.googleapis.com for Wasabi storage use s3.wasabisys.com, for S3, S3v4 and S3v4alt only.
  • Signature version - signature version, for S3v4alt only, S3 supports only v2, S3v4 supports only v4.
  • Region - region, such as us-east-1, for S3v4 and S3v4alt only.

Not all storage providers works with all storage engines, here is a table to show which one to use:

Provider S3 S3v4 S3v4alt(v2) S3v4alt(v4)
Amazon OK (some regions FAIL) OK (some regions FAIL) OK (some regions FAIL) OK
Google OK FAIL FAIL FAIL
Wasabi OK OK OK FAIL

How to generate keys: