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32ca66f3ed
This is a breaking change, requiring users of `featureGates` to change
from a `listOf str` to `attrsOf bool`.
Before:
```nix
featureGates = [ "EphemeralContainers" ];
extraOpts = pkgs.lib.concatStringsSep " " (
[
"--container-runtime=remote"
''--feature-gates="CSIMigration=false"''
});
```
After:
```nix
featureGates = {EphemeralContainers = true; CSIMigration=false;};
```
This is much nicer, and sets us up for later work of migrating to
configuration files for other services, like e.g. has been happening
with kubelet (see: #290119).
Signed-off-by: Christina Sørensen <christina@cafkafk.com>
101 lines
2.9 KiB
Nix
101 lines
2.9 KiB
Nix
{ config, lib, options, pkgs, ... }:
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with lib;
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let
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top = config.services.kubernetes;
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otop = options.services.kubernetes;
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cfg = top.scheduler;
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in
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{
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###### interface
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options.services.kubernetes.scheduler = with lib.types; {
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address = mkOption {
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description = "Kubernetes scheduler listening address.";
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default = "127.0.0.1";
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type = str;
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};
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enable = mkEnableOption "Kubernetes scheduler";
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extraOpts = mkOption {
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description = "Kubernetes scheduler extra command line options.";
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default = "";
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type = separatedString " ";
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};
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featureGates = mkOption {
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description = "Attribute set of feature gates.";
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default = top.featureGates;
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defaultText = literalExpression "config.${otop.featureGates}";
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type = attrsOf bool;
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};
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kubeconfig = top.lib.mkKubeConfigOptions "Kubernetes scheduler";
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leaderElect = mkOption {
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description = "Whether to start leader election before executing main loop.";
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type = bool;
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default = true;
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};
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port = mkOption {
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description = "Kubernetes scheduler listening port.";
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default = 10251;
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type = port;
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};
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verbosity = mkOption {
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description = ''
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Optional glog verbosity level for logging statements. See
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<https://github.com/kubernetes/community/blob/master/contributors/devel/logging.md>
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'';
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default = null;
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type = nullOr int;
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};
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};
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###### implementation
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config = mkIf cfg.enable {
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systemd.services.kube-scheduler = {
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description = "Kubernetes Scheduler Service";
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wantedBy = [ "kubernetes.target" ];
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after = [ "kube-apiserver.service" ];
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serviceConfig = {
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Slice = "kubernetes.slice";
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ExecStart = ''${top.package}/bin/kube-scheduler \
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--bind-address=${cfg.address} \
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${optionalString (cfg.featureGates != {})
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"--feature-gates=${concatStringsSep "," (builtins.attrValues (mapAttrs (n: v: "${n}=${trivial.boolToString v}") cfg.featureGates))}"} \
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--kubeconfig=${top.lib.mkKubeConfig "kube-scheduler" cfg.kubeconfig} \
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--leader-elect=${boolToString cfg.leaderElect} \
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--secure-port=${toString cfg.port} \
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${optionalString (cfg.verbosity != null) "--v=${toString cfg.verbosity}"} \
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${cfg.extraOpts}
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'';
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WorkingDirectory = top.dataDir;
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User = "kubernetes";
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Group = "kubernetes";
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Restart = "on-failure";
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RestartSec = 5;
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};
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unitConfig = {
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StartLimitIntervalSec = 0;
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};
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};
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services.kubernetes.pki.certs = {
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schedulerClient = top.lib.mkCert {
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name = "kube-scheduler-client";
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CN = "system:kube-scheduler";
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action = "systemctl restart kube-scheduler.service";
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};
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};
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services.kubernetes.scheduler.kubeconfig.server = mkDefault top.apiserverAddress;
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};
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meta.buildDocsInSandbox = false;
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}
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