From aa60b68992a8ba2344eb7779834236f1a754b63c Mon Sep 17 00:00:00 2001
From: galal-hussein <hussein.galal.ahmed.11@gmail.com>
Date: Mon, 7 May 2018 21:11:16 +0200
Subject: [PATCH] Add pod antiaffinity to kubedns template

---
 templates/kubedns.go | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/templates/kubedns.go b/templates/kubedns.go
index efe9a8b9..fb7af9db 100644
--- a/templates/kubedns.go
+++ b/templates/kubedns.go
@@ -113,6 +113,17 @@ spec:
       annotations:
         scheduler.alpha.kubernetes.io/critical-pod: ''
     spec:
+      affinity:
+        podAntiAffinity:
+          preferredDuringSchedulingIgnoredDuringExecution:
+          - weight: 100
+            podAffinityTerm:
+              labelSelector:
+                matchExpressions:
+                  - key: k8s-app
+                    operator: In
+                    values: ["kube-dns"]
+              topologyKey: kubernetes.io/hostname
       tolerations:
       - key: "CriticalAddonsOnly"
         operator: "Exists"