nixpkgs/nixos/modules/services/cluster/kubernetes/proxy.nix
pennae 7e28421e17 nixos/kubernetes: make lib option internal and readonly
this set almost certainly shouldn't be touched by users, nor listed in
the manual. make it internal and use it only through the option path to
make clear that this should not be modified.
2021-12-29 20:12:02 +01:00

102 lines
3.0 KiB
Nix

{ config, lib, options, pkgs, ... }:
with lib;
let
top = config.services.kubernetes;
otop = options.services.kubernetes;
cfg = top.proxy;
klib = options.services.kubernetes.lib.default;
in
{
imports = [
(mkRenamedOptionModule [ "services" "kubernetes" "proxy" "address" ] ["services" "kubernetes" "proxy" "bindAddress"])
];
###### interface
options.services.kubernetes.proxy = with lib.types; {
bindAddress = mkOption {
description = "Kubernetes proxy listening address.";
default = "0.0.0.0";
type = str;
};
enable = mkEnableOption "Kubernetes proxy";
extraOpts = mkOption {
description = "Kubernetes proxy extra command line options.";
default = "";
type = separatedString " ";
};
featureGates = mkOption {
description = "List set of feature gates";
default = top.featureGates;
defaultText = literalExpression "config.${otop.featureGates}";
type = listOf str;
};
hostname = mkOption {
description = "Kubernetes proxy hostname override.";
default = config.networking.hostName;
defaultText = literalExpression "config.networking.hostName";
type = str;
};
kubeconfig = klib.mkKubeConfigOptions "Kubernetes proxy";
verbosity = mkOption {
description = ''
Optional glog verbosity level for logging statements. See
<link xlink:href="https://github.com/kubernetes/community/blob/master/contributors/devel/logging.md"/>
'';
default = null;
type = nullOr int;
};
};
###### implementation
config = mkIf cfg.enable {
systemd.services.kube-proxy = {
description = "Kubernetes Proxy Service";
wantedBy = [ "kubernetes.target" ];
after = [ "kube-apiserver.service" ];
path = with pkgs; [ iptables conntrack-tools ];
serviceConfig = {
Slice = "kubernetes.slice";
ExecStart = ''${top.package}/bin/kube-proxy \
--bind-address=${cfg.bindAddress} \
${optionalString (top.clusterCidr!=null)
"--cluster-cidr=${top.clusterCidr}"} \
${optionalString (cfg.featureGates != [])
"--feature-gates=${concatMapStringsSep "," (feature: "${feature}=true") cfg.featureGates}"} \
--hostname-override=${cfg.hostname} \
--kubeconfig=${klib.mkKubeConfig "kube-proxy" cfg.kubeconfig} \
${optionalString (cfg.verbosity != null) "--v=${toString cfg.verbosity}"} \
${cfg.extraOpts}
'';
WorkingDirectory = top.dataDir;
Restart = "on-failure";
RestartSec = 5;
};
unitConfig = {
StartLimitIntervalSec = 0;
};
};
services.kubernetes.proxy.hostname = with config.networking; mkDefault hostName;
services.kubernetes.pki.certs = {
kubeProxyClient = klib.mkCert {
name = "kube-proxy-client";
CN = "system:kube-proxy";
action = "systemctl restart kube-proxy.service";
};
};
services.kubernetes.proxy.kubeconfig.server = mkDefault top.apiserverAddress;
};
}