From 85c851f5198bca4917d6ad08fe1cec9d7d36945b Mon Sep 17 00:00:00 2001
From: Matthew Mosesohn <matthew.mosesohn@gmail.com>
Date: Mon, 18 Nov 2019 11:13:41 +0300
Subject: [PATCH] scale down coredns on each master during graceful upgrade
(#5344)
This fixes the scenario where masters are upgraded one at a time
and coredns gets improperly scaled back up to 2 replicas.
Change-Id: I7cc9283f40efcfd61b5813c89a5805c95d901567
---
roles/kubernetes/master/tasks/kubeadm-upgrade.yml | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/roles/kubernetes/master/tasks/kubeadm-upgrade.yml b/roles/kubernetes/master/tasks/kubeadm-upgrade.yml
index ec9b8cf0d..d8a80cd02 100644
--- a/roles/kubernetes/master/tasks/kubeadm-upgrade.yml
+++ b/roles/kubernetes/master/tasks/kubeadm-upgrade.yml
@@ -49,8 +49,8 @@
retries: 6
delay: 5
until: scale_down_coredns is succeeded
+ run_once: yes
when:
- - inventory_hostname == groups['kube-master']|first
- kubeadm_scale_down_coredns_enabled
- dns_mode not in ['coredns', 'coredns_dual']
changed_when: false
--
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