From 66c1278f98502e05f0683472d444441fd504bfbe Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Sun, 3 Jan 2021 18:28:34 +0100
Subject: kubernetes: update node-local-dns

---
 .../kubeadm/master/templates/node-local-dns.yml.j2 | 23 +++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

(limited to 'roles/kubernetes')

diff --git a/roles/kubernetes/kubeadm/master/templates/node-local-dns.yml.j2 b/roles/kubernetes/kubeadm/master/templates/node-local-dns.yml.j2
index 210c551a..d536d5a7 100644
--- a/roles/kubernetes/kubeadm/master/templates/node-local-dns.yml.j2
+++ b/roles/kubernetes/kubeadm/master/templates/node-local-dns.yml.j2
@@ -140,7 +140,7 @@ spec:
         operator: "Exists"
       containers:
       - name: node-cache
-        image: k8s.gcr.io/k8s-dns-node-cache:1.15.13
+        image: k8s.gcr.io/dns/k8s-dns-node-cache:1.16.0
         resources:
           requests:
             cpu: 25m
@@ -188,3 +188,24 @@ spec:
           items:
             - key: Corefile
               path: Corefile.base
+---
+# A headless service is a service with a service IP but instead of load-balancing it will return the IPs of our associated Pods.
+# We use this to expose metrics to Prometheus.
+apiVersion: v1
+kind: Service
+metadata:
+  annotations:
+    prometheus.io/port: "9253"
+    prometheus.io/scrape: "true"
+  labels:
+    k8s-app: node-local-dns
+  name: node-local-dns
+  namespace: kube-system
+spec:
+  clusterIP: None
+  ports:
+    - name: metrics
+      port: 9253
+      targetPort: 9253
+  selector:
+    k8s-app: node-local-dns
-- 
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