# Goss {#module-services-goss} [goss](https://goss.rocks/) is a YAML based serverspec alternative tool for validating a server's configuration. ## Basic Usage {#module-services-goss-basic-usage} A minimal configuration looks like this: ```nix { services.goss = { enable = true; environment = { GOSS_FMT = "json"; GOSS_LOGLEVEL = "TRACE"; }; settings = { addr."tcp://localhost:8080" = { reachable = true; local-address = "127.0.0.1"; }; command."check-goss-version" = { exec = "${lib.getExe pkgs.goss} --version"; exit-status = 0; }; dns.localhost.resolvable = true; file."/nix" = { filetype = "directory"; exists = true; }; group.root.exists = true; kernel-param."kernel.ostype".value = "Linux"; service.goss = { enabled = true; running = true; }; user.root.exists = true; }; }; } ```