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Add memory flags to minecraft server

This commit is contained in:
niten 2022-09-05 17:30:30 -07:00
parent b9def9eba9
commit 877a1f4da7
3 changed files with 197 additions and 49 deletions
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99
lib/fudo/default.nix
View File

@ -1,54 +1,55 @@
{ config, lib, pkgs, ... }:
with lib; {
imports = [
./backplane-service/dns.nix
imports = [
./backplane-service/dns.nix
./acme-certs.nix
./adguard-dns-proxy.nix
./authentication.nix
./backplane.nix
./chat.nix
./client/dns.nix
./deploy.nix
./distributed-builds.nix
./dns.nix
./domains.nix
./garbage-collector.nix
./git.nix
./global.nix
./grafana.nix
./hosts.nix
./host-filesystems.nix
./initrd-network.nix
./ipfs.nix
./jabber.nix
./kdc.nix
./ldap.nix
./local-network.nix
./mail.nix
./mail-container.nix
./minecraft-server.nix
./netinfo-email.nix
./node-exporter.nix
./nsd.nix
./password.nix
./postgres.nix
./powerdns.nix
./prometheus.nix
./secrets.nix
./secure-dns-proxy.nix
./sites.nix
./slynk.nix
./ssh.nix
./system.nix
./system-networking.nix
./users.nix
./vpn.nix
./webmail.nix
# ./wireguard.nix
# ./wireguard-client.nix
./wireless-networks.nix
./zones.nix
];
./acme-certs.nix
./adguard-dns-proxy.nix
./authentication.nix
./backplane.nix
./chat.nix
./client/dns.nix
./deploy.nix
./distributed-builds.nix
./dns.nix
./domains.nix
./garbage-collector.nix
./git.nix
./global.nix
./grafana.nix
./hosts.nix
./host-filesystems.nix
./initrd-network.nix
./ipfs.nix
./jabber.nix
./kdc.nix
./ldap.nix
./local-network.nix
./mail.nix
./mail-container.nix
./minecraft-clj.nix
./minecraft-server.nix
./netinfo-email.nix
./node-exporter.nix
./nsd.nix
./password.nix
./postgres.nix
./powerdns.nix
./prometheus.nix
./secrets.nix
./secure-dns-proxy.nix
./sites.nix
./slynk.nix
./ssh.nix
./system.nix
./system-networking.nix
./users.nix
./vpn.nix
./webmail.nix
# ./wireguard.nix
# ./wireguard-client.nix
./wireless-networks.nix
./zones.nix
];
}

113
lib/fudo/minecraft-clj.nix Normal file
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@ -0,0 +1,113 @@
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.fudo.minecraft-clj;
papermcWithPlugins = pkgs.buildEnv {
name = "papermcWithPlugins";
paths = with pkgs; [ papermc witchcraft-plugin-current ];
};
highMemFlags = [
"-XX:G1NewSizePercent=40"
"-XX:G1MaxNewSizePercent=50"
"-XX:G1HeapRegionSize=16M"
"-XX:G1ReservePercent=15"
"-XX:InitiatingHeapOccupancyPercent=20"
];
commonFlags = [
"-XX:+UseG1GC"
"-XX:+ParallelRefProcEnabled"
"-XX:MaxGCPauseMillis=200"
"-XX:+UnlockExperimentalVMOptions"
"-XX:+DisableExplicitGC"
"-XX:+AlwaysPreTouch"
"-XX:G1NewSizePercent=30"
"-XX:G1MaxNewSizePercent=40"
"-XX:G1HeapRegionSize=8M"
"-XX:G1ReservePercent=20"
"-XX:G1HeapWastePercent=5"
"-XX:G1MixedGCCountTarget=4"
"-XX:InitiatingHeapOccupancyPercent=15"
"-XX:G1MixedGCLiveThresholdPercent=90"
"-XX:G1RSetUpdatingPauseTimePercent=5"
"-XX:SurvivorRatio=32"
"-XX:+PerfDisableSharedMem"
"-XX:MaxTenuringThreshold=1"
"-Dusing.aikars.flags=https://mcflags.emc.gs"
"-Daikars.new.flags=true"
];
in {
options.fudo.minecraft-clj = with types; {
enable = mkEnableOption "Enable Minecraft server with Clojure repl.";
data-dir = mkOption {
type = str;
description = "Path at which to store Minecraft data.";
};
allocated-memory = mkOption {
type = int;
description = "Memory to allocate to Minecraft, in GB.";
default = 4;
};
user = mkOption {
type = str;
description = "User as which to run the minecraft server.";
default = "minecraft-clj";
};
group = mkOption {
type = str;
description = "Group as which to run the minecraft server.";
default = "minecraft-clj";
};
};
config = {
users = {
users."${cfg.user}" = {
isNormalUser = false;
home = cfg.data-dir;
group = cfg.group;
createHome = true;
};
groups."${cfg.group}" = { members = [ cfg.user ]; };
};
systemd.services.minecraft-clj = {
description = "Minecraft server with Clojure REPL.";
wantedBy = [ "multi-user.target" ];
after = [ "network-online.target" ];
serviceConfig = {
User = cfg.user;
Group = cfg.group;
ExecStart = let
mem = "${cfg.allocated-memory}G";
memFlags = [ "-Xms${mem}" "-Xmx${mem}" ];
flags = commonFlags ++ memFlags
++ (optionals (cfg.allocated-memory >= 12) highMemFlags);
flagStr = concatStringsSep " " flags;
in "${pkgs.papermc}/bin/minecraft-server ${flagStr}";
Restart = "always";
NoNewPrivileges = true;
PrivateTmp = true;
PrivateDevices = true;
ProtectSystem = "strict";
ProtectHome = true;
ProtectControlGroups = true;
ProtectKernelModules = true;
ProtectKernalTunables = true;
RestrictAddressFamilies = [ "AF_INET" "AF_INET6" ];
RestrictRealtime = true;
RestrictNamespaces = true;
MemoryDenyWriteExecute = true;
};
};
};
}

34
lib/fudo/minecraft-server.nix
View File

@ -45,6 +45,12 @@ in {
type = types.bool;
default = false;
};
allocated-memory = mkOption {
type = types.int;
description = "Memory (in GB) to allocate to the Minecraft server.";
default = 2;
};
};
config = mkIf cfg.enable {
@ -63,6 +69,34 @@ in {
gamemode = cfg.game-mode;
allow-cheats = true;
};
jvmOpts = [
"-Xms${toString cfg.allocated-memory}G"
"-Xmx${toString cfg.allocated-memory}G"
"-XX:+UseG1GC"
"-XX:+ParallelRefProcEnabled"
"-XX:MaxGCPauseMillis=200"
"-XX:+UnlockExperimentalVMOptions"
"-XX:+DisableExplicitGC"
"-XX:+AlwaysPreTouch"
"-XX:G1NewSizePercent=30"
"-XX:G1MaxNewSizePercent=40"
"-XX:G1HeapRegionSize=8M"
"-XX:G1ReservePercent=20"
"-XX:G1HeapWastePercent=5"
"-XX:G1MixedGCCountTarget=4"
"-XX:InitiatingHeapOccupancyPercent=15"
"-XX:G1MixedGCLiveThresholdPercent=90"
"-XX:G1RSetUpdatingPauseTimePercent=5"
"-XX:SurvivorRatio=32"
"-XX:+PerfDisableSharedMem"
"-XX:MaxTenuringThreshold=1"
] ++ (optionals (cfg.allocated-memory >= 12) [
"-XX:G1NewSizePercent=40"
"-XX:G1MaxNewSizePercent=50"
"-XX:G1HeapRegionSize=16M"
"-XX:G1ReservePercent=15"
"-XX:InitiatingHeapOccupancyPercent=20"
]);
};
};
}