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nixos/kubernetes: add dns addonmanger reconcile mode option (#55834)

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Allow coredns ConfigMap and Depolyment to be editable by the user. An use
case is augmenting the default, generated dns records with local services.
This commit is contained in:
Jonas Juselius 2019-03-09 11:57:41 +01:00 committed by Danylo Hlynskyi
parent 3671047632
commit 279716c330
1 changed files with 14 additions and 2 deletions
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16
nixos/modules/services/cluster/kubernetes/addons/dns.nix
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@ -38,6 +38,18 @@ in {
type = types.int;
};
reconcileMode = mkOption {
description = ''
Controls the addon manager reconciliation mode for the DNS addon.
Setting reconcile mode to EnsureExists makes it possible to tailor DNS behavior by editing the coredns ConfigMap.
See: <link xlink:href="https://github.com/kubernetes/kubernetes/blob/master/cluster/addons/addon-manager/README.md"/>.
'';
default = "Reconcile";
type = types.enum [ "Reconcile" "EnsureExists" ];
};
coredns = mkOption {
description = "Docker image to seed for the CoreDNS container.";
type = types.attrs;
@ -131,7 +143,7 @@ in {
kind = "ConfigMap";
metadata = {
labels = {
"addonmanager.kubernetes.io/mode" = "Reconcile";
"addonmanager.kubernetes.io/mode" = cfg.reconcileMode;
"k8s-app" = "kube-dns";
"kubernetes.io/cluster-service" = "true";
};
@ -162,7 +174,7 @@ in {
kind = "Deployment";
metadata = {
labels = {
"addonmanager.kubernetes.io/mode" = "Reconcile";
"addonmanager.kubernetes.io/mode" = cfg.reconcileMode;
"k8s-app" = "kube-dns";
"kubernetes.io/cluster-service" = "true";
"kubernetes.io/name" = "CoreDNS";