From d309657b40b71fba2c16aa663397da81e126a2fb Mon Sep 17 00:00:00 2001
From: Scott Dodson <sdodson@redhat.com>
Date: Sun, 18 Jun 2017 16:30:23 -0400
Subject: Preserve etcd3 storage if it's already in use

This would be the case if for instance they'd upgraded and then
migrated.
---
 roles/openshift_master/defaults/main.yml           |  1 +
 roles/openshift_master/tasks/main.yml              | 20 --------------------
 roles/openshift_master/templates/master.yaml.v1.j2 |  6 ++++++
 3 files changed, 7 insertions(+), 20 deletions(-)

(limited to 'roles/openshift_master')

diff --git a/roles/openshift_master/defaults/main.yml b/roles/openshift_master/defaults/main.yml
index 6a082d71a..2d3ce5bcd 100644
--- a/roles/openshift_master/defaults/main.yml
+++ b/roles/openshift_master/defaults/main.yml
@@ -1,3 +1,4 @@
 ---
 openshift_node_ips: []
 r_openshift_master_clean_install: false
+r_openshift_master_etcd3_storage: false
diff --git a/roles/openshift_master/tasks/main.yml b/roles/openshift_master/tasks/main.yml
index 035c15fef..aed5598c0 100644
--- a/roles/openshift_master/tasks/main.yml
+++ b/roles/openshift_master/tasks/main.yml
@@ -164,26 +164,6 @@
     - restart master api
     - restart master controllers
 
-- name: Configure master to use etcd3 storage backend on 3.6 clean installs
-  yedit:
-    src: /etc/origin/master/master-config.yaml
-    key: "{{ item.key }}"
-    value: "{{ item.value }}"
-  with_items:
-    - key: kubernetesMasterConfig.apiServerArguments.storage-backend
-      value:
-        - etcd3
-    - key: kubernetesMasterConfig.apiServerArguments.storage-media-type
-      value:
-        - application/vnd.kubernetes.protobuf
-  when:
-    - r_openshift_master_clean_install
-    - openshift.common.version_gte_3_6
-  notify:
-    - restart master
-    - restart master api
-    - restart master controllers
-
 - include: set_loopback_context.yml
   when: openshift.common.version_gte_3_2_or_1_2
 
diff --git a/roles/openshift_master/templates/master.yaml.v1.j2 b/roles/openshift_master/templates/master.yaml.v1.j2
index 1935d9592..6c26e5092 100644
--- a/roles/openshift_master/templates/master.yaml.v1.j2
+++ b/roles/openshift_master/templates/master.yaml.v1.j2
@@ -139,6 +139,12 @@ kubernetesMasterConfig:
   - v1
 {% endif %}
   apiServerArguments: {{ openshift.master.api_server_args | default(None) | to_padded_yaml( level=2 ) }}
+{% if r_openshift_master_etcd3_storage or ( r_openshift_master_clean_install and openshift.common.version_gte_3_6 ) %}
+    storage-backend:
+    - etcd3
+    storage-media-type:
+    - application/vnd.kubernetes.protobuf
+{% endif %}
   controllerArguments: {{ openshift.master.controller_args | default(None) | to_padded_yaml( level=2 ) }}
   masterCount: {{ openshift.master.master_count if openshift.master.cluster_method | default(None) == 'native' else 1 }}
   masterIP: {{ openshift.common.ip }}
-- 
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