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