101 lines
2.9 KiB
Nix
101 lines
2.9 KiB
Nix
{ pkgs, lib, config, ... }:
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let
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cfg = config.virtualisation.containerd;
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configFile = if cfg.configFile == null then
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settingsFormat.generate "containerd.toml" cfg.settings
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else
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cfg.configFile;
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containerdConfigChecked = pkgs.runCommand "containerd-config-checked.toml" {
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nativeBuildInputs = [ pkgs.containerd ];
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} ''
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containerd -c ${configFile} config dump >/dev/null
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ln -s ${configFile} $out
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'';
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settingsFormat = pkgs.formats.toml {};
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in
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{
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options.virtualisation.containerd = with lib.types; {
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enable = lib.mkEnableOption "containerd container runtime";
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configFile = lib.mkOption {
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default = null;
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description = ''
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Path to containerd config file.
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Setting this option will override any configuration applied by the settings option.
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'';
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type = nullOr path;
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};
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settings = lib.mkOption {
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type = settingsFormat.type;
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default = {};
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description = ''
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Verbatim lines to add to containerd.toml
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'';
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};
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args = lib.mkOption {
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default = {};
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description = "extra args to append to the containerd cmdline";
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type = attrsOf str;
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};
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};
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config = lib.mkIf cfg.enable {
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warnings = lib.optional (cfg.configFile != null) ''
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`virtualisation.containerd.configFile` is deprecated. use `virtualisation.containerd.settings` instead.
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'';
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virtualisation.containerd = {
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args.config = toString containerdConfigChecked;
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settings = {
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version = 2;
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plugins."io.containerd.grpc.v1.cri" = {
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containerd.snapshotter =
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lib.mkIf config.boot.zfs.enabled (lib.mkOptionDefault "zfs");
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cni.bin_dir = lib.mkOptionDefault "${pkgs.cni-plugins}/bin";
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};
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};
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};
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environment.systemPackages = [ pkgs.containerd ];
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systemd.services.containerd = {
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description = "containerd - container runtime";
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wantedBy = [ "multi-user.target" ];
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after = [ "network.target" ];
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path = with pkgs; [
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containerd
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runc
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iptables
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] ++ lib.optional config.boot.zfs.enabled config.boot.zfs.package;
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serviceConfig = {
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ExecStart = ''${pkgs.containerd}/bin/containerd ${lib.concatStringsSep " " (lib.cli.toGNUCommandLine {} cfg.args)}'';
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Delegate = "yes";
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KillMode = "process";
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Type = "notify";
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Restart = "always";
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RestartSec = "10";
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# "limits" defined below are adopted from upstream: https://github.com/containerd/containerd/blob/master/containerd.service
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LimitNPROC = "infinity";
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LimitCORE = "infinity";
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LimitNOFILE = "infinity";
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TasksMax = "infinity";
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OOMScoreAdjust = "-999";
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StateDirectory = "containerd";
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RuntimeDirectory = "containerd";
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RuntimeDirectoryPreserve = "yes";
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};
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unitConfig = {
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StartLimitBurst = "16";
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StartLimitIntervalSec = "120s";
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};
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};
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};
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}
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