Unverified Commit 889b866c authored by Charles Duffy's avatar Charles Duffy
Browse files

nixos/nats: Shut down gracefully, and prevent automatic restart on deliberate stop 

SIGUSR2 puts nats-server into "lame-duck mode", where the node hands off leader roles and hands clients off to other nodes.
parent 63bdb5d9

nixos/modules/services/networking/nats.nix

+9 −1
Original line number Diff line number Diff line
@@ -138,7 +138,15 @@ in 
          Type = "simple";

          ExecStart = "${pkgs.nats-server}/bin/nats-server -c ${configFile}";

          ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";

          ExecStop = "${pkgs.coreutils}/bin/kill -SIGINT $MAINPID";



          KillMode = "mixed";

          KillSignal = "SIGUSR2";

          SuccessExitStatus = [

            0

            "SIGUSR2"

          ];



          TimeoutStopSec = "150"; # must exceed lame_duck_duration, which defaults to 2min

          Restart = "on-failure";



          User = cfg.user;