From 16cedfdb991a261c73767882e62907a0e8163d07 Mon Sep 17 00:00:00 2001
From: Chris O'Haver <cohaver@infoblox.com>
Date: Thu, 7 May 2020 13:29:34 -0400
Subject: [PATCH] use preferred during scheduling rule (#221)

Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
---
 kubernetes/coredns.yaml.sed | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/kubernetes/coredns.yaml.sed b/kubernetes/coredns.yaml.sed
index 1d50f95..b64725b 100644
--- a/kubernetes/coredns.yaml.sed
+++ b/kubernetes/coredns.yaml.sed
@@ -101,14 +101,16 @@ spec:
       nodeSelector:
         kubernetes.io/os: linux
       affinity:
-        podAntiAffinity:
-          requiredDuringSchedulingIgnoredDuringExecution:
-          - labelSelector:
-              matchExpressions:
-              - key: k8s-app
-                operator: In
-                values: ["kube-dns"]
-            topologyKey: kubernetes.io/hostname
+         podAntiAffinity:
+           preferredDuringSchedulingIgnoredDuringExecution:
+           - weight: 100
+             podAffinityTerm:
+               labelSelector:
+                 matchExpressions:
+                   - key: k8s-app
+                     operator: In
+                     values: ["kube-dns"]
+               topologyKey: kubernetes.io/hostname
       containers:
       - name: coredns
         image: coredns/coredns:1.6.7