From fa6c482bae5ea36e52b575281feeab2649a8321f Mon Sep 17 00:00:00 2001
From: Paul Bonaud <paul.bonaud@fretlink.com>
Date: Thu, 20 Dec 2018 11:03:39 +0100
Subject: clustering: make sure to delegate admin tasks to the master node

---
 defaults/main.yml            |  5 ++---
 tasks/rabbitmq_ha_config.yml | 18 +++++++++++-------
 tasks/rabbitmq_users.yml     |  1 +
 3 files changed, 14 insertions(+), 10 deletions(-)

diff --git a/defaults/main.yml b/defaults/main.yml
index f3d2c20..4ea3ee0 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -29,6 +29,8 @@ rabbitmq_debian_version: 3.7.9
 
 # Defines if setting up a rabbitmq cluster
 rabbitmq_enable_clustering: false
+# Defines the inventory host that should be considered master
+rabbitmq_master: None
 
 rabbitmq_erlang_cookie_file: /var/lib/rabbitmq/.erlang.cookie
 
@@ -50,9 +52,6 @@ rabitmq_ssl_options: {}
 # verify: verify_peer
 # fail_if_no_peer_cert: "false"
 
-# Defines the inventory host that should be considered master
-rabbitmq_master: []
-
 rabbitmq_redhat_repo_key: https://www.rabbitmq.com/rabbitmq-signing-key-public.asc
 rabbitmq_redhat_package: "rabbitmq-server-{{ rabbitmq_redhat_version }}-1.noarch.rpm"
 rabbitmq_redhat_url: "http://www.rabbitmq.com/releases/rabbitmq-server/v{{ rabbitmq_redhat_version }}"
diff --git a/tasks/rabbitmq_ha_config.yml b/tasks/rabbitmq_ha_config.yml
index cea301c..322172d 100644
--- a/tasks/rabbitmq_ha_config.yml
+++ b/tasks/rabbitmq_ha_config.yml
@@ -13,9 +13,18 @@
   notify: restart rabbitmq-server
   when: not rabbitmqadmin_check['stat']['exists']
 
+- name: rabbitmq_ha_config | creating exchange(s)
+  command: rabbitmqadmin declare exchange name={{ item['exchange_name'] }} type={{ item['type'] }} --vhost={{ item['vhost'] | default('/') }}
+  run_once: true
+  delegate_to: "{{ rabbitmq_master }}"
+  become: true
+  with_items: "{{ rabbitmq_config }}"
+  when: item['exchange_name'] is defined
+
 - name: rabbitmq_ha_config | creating queue(s)
   command: rabbitmqadmin declare queue name={{ item['queue_name'] }} durable={{ item['durable']|lower }} --vhost={{ item['vhost'] | default('/') }}
   run_once: true
+  delegate_to: "{{ rabbitmq_master }}"
   become: true
   when:
     - item['queue_name'] is defined
@@ -32,20 +41,15 @@
     policy_vhost: "{{ item.vhost | default('/') }}"
     policy_name: "{{ item.policy_pattern is defined | ternary(policy_vhost + item.policy_pattern|default(''),item.queue_name|default('')) }}"
   run_once: true
+  delegate_to: "{{ rabbitmq_master }}"
   become: true
   when: item.queue_name is defined or item.policy_pattern is defined
   with_items: "{{ rabbitmq_config }}"
 
-- name: rabbitmq_ha_config | creating exchange(s)
-  command: rabbitmqadmin declare exchange name={{ item['exchange_name'] }} type={{ item['type'] }} --vhost={{ item['vhost'] | default('/') }}
-  run_once: true
-  become: true
-  with_items: "{{ rabbitmq_config }}"
-  when: item['exchange_name'] is defined
-
 - name: rabbitmq_ha_config | creating binding(s)
   command: rabbitmqadmin declare binding source={{ item['exchange_name'] }} destination_type="queue" destination={{ item['queue_name'] }} routing_key={{ item['routing_key'] }} --vhost={{ item['vhost'] | default('/') }}
   run_once: true
+  delegate_to: "{{ rabbitmq_master }}"
   become: true
   with_items: "{{ rabbitmq_config }}"
   when: item['exchange_name'] is defined
diff --git a/tasks/rabbitmq_users.yml b/tasks/rabbitmq_users.yml
index 98e45e2..083c704 100644
--- a/tasks/rabbitmq_users.yml
+++ b/tasks/rabbitmq_users.yml
@@ -27,6 +27,7 @@
     tags: "{{ item['tags'] }}"
     state: present
   run_once: yes
+  delegate_to: "{{ rabbitmq_master }}"
   become: true
   with_items: "{{ rabbitmq_users }}"
   when: >
-- 
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