Zenko CloudServer

Zenko CloudServer is an object storage server that implements the Amazon S3 API, so applications written against S3 can point at it. It is written in Node.js and runs as a server process; the README also describes running it in a test environment to emulate S3 locally. The README covers a file backend, an in-memory backend and several data backends at once, and it can be run as a Docker container or from a source checkout with yarn.

With the file backend, objects go to local directories; with the memory backend, to memory. With multiple backends, a request header with a location constraint picks the backend for each object. The project began as Scality S3 Server and is described as the core of Zenko, Scality’s multi-cloud data controller.

Worth knowing

The README’s install section names Node.js and yarn versions that differ from the Node.js version the package requires, so check the package manifest before choosing a runtime. User management through Vault needs Vault, which the README calls proprietary and separate.