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nixpkgs/nixos/modules/services/cluster/kubernetes/addon-manager.nix
pennae 2d356a1969 nixos/kubernetes: move all k8s docs out of the sandbox
otherwise the manual won't build.

ideally they'll move back into the sandbox at some point, but we're
obviously not qualified to put them there.
2022-01-08 17:13:27 +10:00

172 lines
4.5 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
top = config.services.kubernetes;
cfg = top.addonManager;
isRBACEnabled = elem "RBAC" top.apiserver.authorizationMode;
addons = pkgs.runCommand "kubernetes-addons" { } ''
mkdir -p $out
# since we are mounting the addons to the addon manager, they need to be copied
${concatMapStringsSep ";" (a: "cp -v ${a}/* $out/") (mapAttrsToList (name: addon:
pkgs.writeTextDir "${name}.json" (builtins.toJSON addon)
) (cfg.addons))}
'';
in
{
###### interface
options.services.kubernetes.addonManager = with lib.types; {
bootstrapAddons = mkOption {
description = ''
Bootstrap addons are like regular addons, but they are applied with cluster-admin rigths.
They are applied at addon-manager startup only.
'';
default = { };
type = attrsOf attrs;
example = literalExpression ''
{
"my-service" = {
"apiVersion" = "v1";
"kind" = "Service";
"metadata" = {
"name" = "my-service";
"namespace" = "default";
};
"spec" = { ... };
};
}
'';
};
addons = mkOption {
description = "Kubernetes addons (any kind of Kubernetes resource can be an addon).";
default = { };
type = attrsOf (either attrs (listOf attrs));
example = literalExpression ''
{
"my-service" = {
"apiVersion" = "v1";
"kind" = "Service";
"metadata" = {
"name" = "my-service";
"namespace" = "default";
};
"spec" = { ... };
};
}
// import <nixpkgs/nixos/modules/services/cluster/kubernetes/dns.nix> { cfg = config.services.kubernetes; };
'';
};
enable = mkEnableOption "Kubernetes addon manager.";
};
###### implementation
config = mkIf cfg.enable {
environment.etc."kubernetes/addons".source = "${addons}/";
systemd.services.kube-addon-manager = {
description = "Kubernetes addon manager";
wantedBy = [ "kubernetes.target" ];
after = [ "kube-apiserver.service" ];
environment.ADDON_PATH = "/etc/kubernetes/addons/";
path = [ pkgs.gawk ];
serviceConfig = {
Slice = "kubernetes.slice";
ExecStart = "${top.package}/bin/kube-addons";
WorkingDirectory = top.dataDir;
User = "kubernetes";
Group = "kubernetes";
Restart = "on-failure";
RestartSec = 10;
};
unitConfig = {
StartLimitIntervalSec = 0;
};
};
services.kubernetes.addonManager.bootstrapAddons = mkIf isRBACEnabled
(let
name = "system:kube-addon-manager";
namespace = "kube-system";
in
{
kube-addon-manager-r = {
apiVersion = "rbac.authorization.k8s.io/v1";
kind = "Role";
metadata = {
inherit name namespace;
};
rules = [{
apiGroups = ["*"];
resources = ["*"];
verbs = ["*"];
}];
};
kube-addon-manager-rb = {
apiVersion = "rbac.authorization.k8s.io/v1";
kind = "RoleBinding";
metadata = {
inherit name namespace;
};
roleRef = {
apiGroup = "rbac.authorization.k8s.io";
kind = "Role";
inherit name;
};
subjects = [{
apiGroup = "rbac.authorization.k8s.io";
kind = "User";
inherit name;
}];
};
kube-addon-manager-cluster-lister-cr = {
apiVersion = "rbac.authorization.k8s.io/v1";
kind = "ClusterRole";
metadata = {
name = "${name}:cluster-lister";
};
rules = [{
apiGroups = ["*"];
resources = ["*"];
verbs = ["list"];
}];
};
kube-addon-manager-cluster-lister-crb = {
apiVersion = "rbac.authorization.k8s.io/v1";
kind = "ClusterRoleBinding";
metadata = {
name = "${name}:cluster-lister";
};
roleRef = {
apiGroup = "rbac.authorization.k8s.io";
kind = "ClusterRole";
name = "${name}:cluster-lister";
};
subjects = [{
kind = "User";
inherit name;
}];
};
});
services.kubernetes.pki.certs = {
addonManager = top.lib.mkCert {
name = "kube-addon-manager";
CN = "system:kube-addon-manager";
action = "systemctl restart kube-addon-manager.service";
};
};
};
meta.buildDocsInSandbox = false;
}