61 lines
1.6 KiB
Nix
61 lines
1.6 KiB
Nix
{
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config,
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lib,
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pkgs,
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...
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}:
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let
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cfg = config.host.services.k3s;
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in
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with lib;
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{
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options = {
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host.services.k3s = {
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enable = mkEnableOption (mdDoc "Enables K3s");
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role = mkOption {
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default = "server";
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type = types.enum [
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"agent"
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"server"
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];
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description = "Which K3s role to use";
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};
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serverAddr = mkOption {
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default = "";
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type = types.str;
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description = "If an agent, this is the address of the server.";
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};
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};
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};
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config = mkIf cfg.enable {
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# Add packages for developing with K3s.
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# For details, see https://nixos.wiki/wiki/K3s
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environment.systemPackages = with pkgs; [ k3s ];
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networking.firewall = {
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allowedTCPPorts = [
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6443 # k3s: required so that pods can reach the API server (running on port 6443 by default)
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# 2379 # k3s, etcd clients: required if using a "High Availability Embedded etcd" configuration
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# 2380 # k3s, etcd peers: required if using a "High Availability Embedded etcd" configuration
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];
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allowedUDPPorts = [
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# 8472 # k3s, flannel: required if using multi-node for inter-node networking
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];
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};
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services.k3s = {
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enable = true;
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inherit (cfg) role;
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extraFlags = toString [
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# "--kubelet-arg=v=4" # Optionally add additional args to k3s
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];
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} // optionalAttrs (cfg.role == "agent") { inherit (cfg) serverAddr; };
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# Increase number of open file handlers so K3s doesn't exhaust them...again.
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systemd.extraConfig = ''
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DefaultLimitNOFILE=8192:1048576
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'';
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};
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}
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