Mode in which to run the server. ‘monolithic’ runs all components, and is suitable for single-node deployments. ‘api-server’ runs only the API server, and is suitable for clustering. ‘garbage-collector’ only runs the garbage collector periodically. A simple NixOS-based Attic deployment will typically have one ‘monolithic’ and any number of ‘api-server’ nodes. There are several other supported modes that perform one-off operations, but these are the only ones that make sense to run via the NixOS module.

"monolithic"