From 27e4512e502870af67aa7665c16b43e71a2ccff8 Mon Sep 17 00:00:00 2001
From: Ludovic Poujol <lpoujol@evolix.fr>
Date: Tue, 3 Oct 2017 10:21:13 +0200
Subject: [PATCH] Redis: Ensure that we do not modify munin-node config if
 there is multiple redis config blocs

---
 redis/tasks/munin.yml | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/redis/tasks/munin.yml b/redis/tasks/munin.yml
index 04d6449c..74676e07 100644
--- a/redis/tasks/munin.yml
+++ b/redis/tasks/munin.yml
@@ -61,12 +61,24 @@
   notify: restart munin-node
   tags: redis
 
-- name: Add redis password for munin
+- name: Count redis condif blocks in munin-node configuration
+  command: grep -c "\[redis_"  /etc/munin/plugin-conf.d/munin-node
+  register: munin_redis_blocs_in_config
+  failed_when: False
+  changed_when: False
+
+- name: Add redis password for munin (if no more than 1 config block)
   ini_file:
     dest: /etc/munin/plugin-conf.d/munin-node
     section: 'redis_*'
     option: env.password
     value: '{{ redis_password }}'
   notify: restart munin-node
-  when: redis_password != '' and redis_password != None
+  when: "redis_password != '' and redis_password != None and {{munin_redis_blocs_in_config.stdout | int}} <= 1"
   tags: redis
+
+
+- name: Warn if multiple instance in munin-plugins configuration
+  debug:
+    msg: "WARNING - It seems you have multiple redis sections in your munin-node configuration - Munin config NOT changed"
+  when: "redis_password != '' and redis_password != None and {{munin_redis_blocs_in_config.stdout | int}} > 1 "