Someone on the IRC channel told me to post this here. But basically I've installed 'postgresql-service' in a system config, like this: (postgresql-service #:config-file (local-file "../psql/postgresql.conf") #:data-directory "/data/psql" #:locale "en_US.utf8") %base-services))) I changed the contents of postgresql.conf (again), and re-ran "sudo guix system reconfigure". Then I wanted to stop the postgres service, and I believe I ran: "sudo herd stop postgres". The first time I did that, Herd told me it stopped postgres, but when called again, this happens: ~$ sudo herd stop postgres herd: service 'postgres' could not be found (Why would the service "not be found", if it's installed?) ---------------- 'postgres' is listed as stopped: ~$ sudo herd status Started: + loopback + term-tty5 + term-tty1 + root + console-font-tty6 + console-font-tty4 + file-system-/dev/pts + term-tty3 + host-name + term-tty4 + syslogd + term-tty2 + console-font-tty1 + nscd + console-font-tty2 + file-system-/data + user-processes + console-font-tty3 + term-tty6 + root-file-system + networking + file-system-/gnu/store + console-font-tty5 + guix-daemon + user-file-systems + file-system-/dev/shm + urandom-seed + ssh-daemon + udev + file-systems Stopped: - user-homes - postgres -------------------- But it's still running: ~$ ps aux | grep postgres postgres 252 0.0 0.7 312888 29496 ? S 22:10 0:00 /gnu/store/3rg0avphlwgq56qjxd8gr8xbmh1rwkal-postgresql-10.1/bin/postgres --config-file=/gnu/store/hh3s1gpyfv0fa4g7n3x6qyy4272nkb7g-postgresql.conf -p 5432 -D /data/psql postgres 253 0.0 0.0 23236 2296 ? Ss 22:10 0:00 postgres: logger process postgres 255 0.0 0.0 312888 2576 ? Ss 22:10 0:00 postgres: checkpointer process postgres 256 0.0 0.1 312888 4872 ? Ss 22:10 0:00 postgres: writer process postgres 257 0.0 0.5 312888 20460 ? Ss 22:10 0:00 postgres: wal writer process postgres 258 0.0 0.1 313192 5536 ? Ss 22:10 0:00 postgres: autovacuum launcher process postgres 259 0.0 0.0 23236 2260 ? Ss 22:10 0:00 postgres: stats collector process postgres 260 0.0 0.0 313172 3644 ? Ss 22:10 0:00 postgres: bgworker: logical replication launcher --------------------------- So yeah, that's pretty much it :) Not sure what else to tell you now. Let me know if you have ideas, etc. Best, Jukka