From af139714197993c8b601ea1b3fe769d14f75332b Mon Sep 17 00:00:00 2001
From: Jean-Philippe Evrard <jean-philippe@evrard.me>
Date: Sat, 3 Mar 2018 17:16:08 +0000
Subject: [PATCH] Serialize haproxy plays

The impact on install is low, while the benefit on upgrades is
high: better availability.

Change-Id: Iebf6141df475773536a1e06ed9739ac78d0e50eb
---
 playbooks/haproxy-install.yml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/playbooks/haproxy-install.yml b/playbooks/haproxy-install.yml
index 793706a5f3..7a5180165e 100644
--- a/playbooks/haproxy-install.yml
+++ b/playbooks/haproxy-install.yml
@@ -16,6 +16,7 @@
 - name: haproxy base config
   hosts: haproxy
   gather_facts: "{{ osa_gather_facts | default(True) }}"
+  serial: "50%"
   user: root
   pre_tasks:
     - include: "common-tasks/os-{{ container_tech | default('lxc') }}-container-setup.yml"
@@ -40,6 +41,7 @@
 
 - name: Install haproxy
   hosts: haproxy
+  serial: "50%"
   gather_facts: "{{ osa_gather_facts | default(True) }}"
   user: root
   pre_tasks: