From 6347419233f1d9c504f9902ea9db511af5e953a4 Mon Sep 17 00:00:00 2001
From: Matthew Mosesohn <matthew.mosesohn@gmail.com>
Date: Tue, 4 Jun 2019 10:13:02 +0300
Subject: [PATCH] Avoid duplicating nameservers (#4833)

---
 roles/kubernetes/preinstall/tasks/0040-set_facts.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/roles/kubernetes/preinstall/tasks/0040-set_facts.yml b/roles/kubernetes/preinstall/tasks/0040-set_facts.yml
index 7fa7507ae..0b1cad77a 100644
--- a/roles/kubernetes/preinstall/tasks/0040-set_facts.yml
+++ b/roles/kubernetes/preinstall/tasks/0040-set_facts.yml
@@ -141,9 +141,9 @@
 - name: generate nameservers to resolvconf
   set_fact:
     nameserverentries:
-      nameserver {{ ( coredns_server + nameservers|d([]) + cloud_resolver|d([])) | join(',nameserver ') }}
+      nameserver {{ ( coredns_server + nameservers|d([]) + cloud_resolver|d([])) | unique | join(',nameserver ') }}
     supersede_nameserver:
-      supersede domain-name-servers {{ ( coredns_server + nameservers|d([]) + cloud_resolver|d([])) | join(', ') }};
+      supersede domain-name-servers {{ ( coredns_server + nameservers|d([]) + cloud_resolver|d([])) | unique | join(', ') }};
 
 - name: gather os specific variables
   include_vars: "{{ item }}"