hosts/losurdo/redis.nix

   1 { pkgs, lib, config, ... }:
   2 let
   3   inherit (config.networking) hostName;
   4   inherit (config.users) users;
   5 in
   6 {
   7 fileSystems."/var/lib/redis" = {
   8   device = "${hostName}/var/redis";
   9   fsType = "zfs";
  10 };
  11
  12 services.redis = {
  13   enable = true;
  14   unixSocket = "/run/redis/redis.socket";
  15   databases = 16;
  16   syslog = true;
  17   bind = "127.0.0.1 ::1";
  18   settings = {
  19     unixsocketperm = "660";
  20     maxclients = 1024;
  21     maxmemory = "500mb";
  22     maxmemory-policy = "volatile-ttl";
  23   };
  24 };
  25
  26 users.users.redis.group = "redis";
  27 users.groups."redis" = {};
  28
  29 systemd.services.redis.serviceConfig = {
  30   RuntimeDirectoryMode = "0750";
  31   Group = users.redis.group;
  32 };
  33
  34 # As suggested by redis in its logs
  35 boot.kernel.sysctl."vm.overcommit_memory" = 1;
  36 system.activationScripts.redis = ''
  37   echo never >/sys/kernel/mm/transparent_hugepage/enabled
  38 '';
  39 }