104 lines
No EOL
3.6 KiB
Nix
104 lines
No EOL
3.6 KiB
Nix
{ inputs, lib, pkgs, ... }: let
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ram-allocation-mb = 12288;
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rcon-pass = "howdy";
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modpack = let
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commit = "a52f65c1234b9f2dbe1392c471cb32a0614c5073";
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in pkgs.fetchPackwizModpack {
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packHash = "sha256-WplCmvuCmA8TNeRVBKMwkvizmYlBcU9PDugXXSKTBaA=";
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url = "https://git.satr14.my.id/satr14/server-modpack/raw/commit/${commit}/pack.toml";
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};
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in {
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imports = [ inputs.mc.nixosModules.minecraft-servers ];
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nixpkgs.overlays = [ inputs.mc.overlay ];
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powerManagement.cpuFreqGovernor = "schedutil";
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boot.kernel.sysctl = {
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"vm.nr_hugepages" = (ram-allocation-mb / 2) + 512; # (heap_mb / 2MB per page) + 512 pages (1GB) for ZGC off-heap overhead
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"vm.swappiness" = 10;
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};
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services.minecraft-servers = {
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enable = true;
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eula = true;
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managementSystem.systemd-socket.enable = true; # Referenced but unset environment variable evaluates to an empty string: MAINPID
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# ^^^ https://github.com/Infinidoge/nix-minecraft/issues/119
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servers.mc0-explorers-creativity = {
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enable = true;
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autoStart = true;
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restart = "always";
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enableReload = true; # NOTE: development phase, disable in production
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package = pkgs.fabricServers.fabric-1_21_11.override {
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jre_headless = pkgs.javaPackages.compiler.temurin-bin.jdk-25;
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loaderVersion = "0.19.2";
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};
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jvmOpts = let flags = [
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"-Xms${toString ram-allocation-mb}M"
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"-Xmx${toString ram-allocation-mb}M"
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# Exposes SIMD instructions (requires full JDK, useful with performance mods)
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"--add-modules=jdk.incubator.vector"
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# ZGC flags (requires Java v25+, 8+ CPU cores, 10GB+ RAM)
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"-XX:+UseZGC"
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"-XX:+UseLargePages"
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"-XX:+AlwaysPreTouch"
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"-XX:+DisableExplicitGC"
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"-XX:+PerfDisableSharedMem"
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"-XX:+UseCompactObjectHeaders"
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"-XX:ZAllocationSpikeTolerance=5"
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"-XX:SoftMaxHeapSize=${toString (ram-allocation-mb - 2048)}M"
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]; in lib.concatStringsSep " " flags;
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# extraStartPost = let gamerules = {
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# "locator_bar" = false;
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# "mob_explosion_drop_decay" = false;
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# # "reduced_debug_info" = false;
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# # "global_sound_events" = false;
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# }; in lib.concatStringsSep "\n" (map
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# (rule: "${pkgs.rcon-cli}/bin/rcon-cli --password ${rcon-pass} gamerule ${rule} ${toString (gamerules.${rule})}")
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# (lib.attrNames gamerules)
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# );
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# TODO: figure out how to set gamerules on start (script above runs **before** server ready)
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serverProperties = {
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server-port = 25565;
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server-name = "Minecraft Server";
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motd = "§lSeason 3 TESTING§r - §dExplorers Creativity 🔥";
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difficulty = "normal";
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gamemode = "survival";
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max-world-size = 25000;
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spawn-protection = 0;
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pvp = true;
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online-mode = true;
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enable-query = true;
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enforce-secure-profile = false;
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pevent-proxy-connections = false;
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allow-flight = false;
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player-idle-timeout = 0;
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# resource-pack = "https://cdn.satr14.my.id/public/fullslide-1.21.11.zip";
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# resource-pack-sha1 = "e0958dcef5755286f390c22280700c471ec34a65";
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# resource-pack-enforce = false;
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view-distance = 12;
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simulation-distance = 4;
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enable-rcon = true;
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sync-chunk-writes = false;
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"rcon.password" = rcon-pass;
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"rcon.port" = 25575;
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};
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symlinks = {
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# "server-icon.png" = "${modpack}/server-icon.png";
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"mods" = "${modpack}/mods";
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};
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};
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};
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} |