Colmena

Colmena deploys configurations to multiple hosts simultaneously, as shown in the example output with parallel copying and activation, significantly reducing update times compared to sequential tools.

It fully integrates with Nix Flakes, requiring a colmenaHive output in flake.nix, ensuring reproducible builds and aligning with the latest Nix ecosystem standards.

With tag-based filtering (e.g., --on @web), users can deploy to subsets of hosts, enabling precise, targeted updates without manual selection.

Colmena avoids persistent state management, reducing complexity and potential drift issues, which simplifies reasoning about deployments as noted in its philosophy.