Make rabbitmq inventory group configurable

The default value of "rabbitmq_all" remains, but this
change should allow deployers to target the role to multiple
groups now.

Change-Id: Idc1bc44b005f09f9dc7eb9778719a8ba92756c06
Implements: blueprint multi-rabbitmq-clusters

defaults/main.yml

@@ -16,7 +16,10 @@
 ## APT Cache Options
 cache_timeout: 600
 
-rabbitmq_primary_cluster_node: "{{ hostvars[groups['rabbitmq_all'][0]]['ansible_hostname'] }}"
+# Inventory group containing the hosts for the cluster
+rabbitmq_host_group: "rabbitmq_all"
+
+rabbitmq_primary_cluster_node: "{{ hostvars[groups[rabbitmq_host_group][0]]['ansible_hostname'] }}"
 
 # Upgrading the RabbitMQ package requires shutting down the cluster. This variable makes upgrading
 #  the version an explicit action.

releasenotes/notes/configurable_inventory_group-9f5b193221b7006d.yaml

@@ -0,0 +1,7 @@
+---
+features:
+  - The ``rabbitmq_server`` now supports a configurable inventory
+    host group. Deployers can override the ``rabbitmq_host_group`` variable
+    if they wish to use the role to create additional RabbitMQ clusters
+    on a custom host group.
+

tasks/rabbitmq_post_install.yml

@@ -56,7 +56,7 @@
   rabbitmq_user:
     user: guest
     state: absent
-  when: inventory_hostname == groups['rabbitmq_all'][0]
+  when: inventory_hostname == groups[rabbitmq_host_group][0]
   tags:
     - rabbitmq-user
 
@@ -64,6 +64,6 @@
   rabbitmq_user:
     user: guest
     state: absent
-  when: inventory_hostname != groups['rabbitmq_all'][0]
+  when: inventory_hostname != groups[rabbitmq_host_group][0]
   tags:
     - rabbitmq-user

tasks/rabbitmq_pre_install.yml

@@ -45,7 +45,7 @@
     dest: /etc/hosts
     state: present
     line: "{{ hostvars[item]['ansible_ssh_host'] }} {{ hostvars[item]['ansible_hostname'] }} {{ hostvars[item]['ansible_hostname'].split('.')[0] }}"
-  with_items: "{{ groups['rabbitmq_all'] }}"
+  with_items: "{{ groups[rabbitmq_host_group] }}"
   tags:
     - rabbitmq-config
 

tasks/rabbitmq_ssl_key_distribute.yml

@@ -16,7 +16,7 @@
 - name: Distribute self signed ssl key
   copy:
     dest: "{{ rabbitmq_ssl_key }}"
-    content: "{{ hostvars[groups['rabbitmq_all'][0]]['rabbitmq_ssl_key_fact'] | b64decode }}"
+    content: "{{ hostvars[groups[rabbitmq_host_group][0]]['rabbitmq_ssl_key_fact'] | b64decode }}"
     owner: "rabbitmq"
     group: "rabbitmq"
     mode: "0640"
@@ -26,7 +26,7 @@
 - name: Distribute self signed ssl cert
   copy:
     dest: "{{ rabbitmq_ssl_cert }}"
-    content: "{{ hostvars[groups['rabbitmq_all'][0]]['rabbitmq_ssl_cert_fact'] | b64decode }}"
+    content: "{{ hostvars[groups[rabbitmq_host_group][0]]['rabbitmq_ssl_cert_fact'] | b64decode }}"
     owner: "rabbitmq"
     group: "rabbitmq"
     mode: "0640"

tasks/rabbitmq_ssl_self_signed.yml

@@ -17,12 +17,12 @@
 # RabbitMQ container.
 - include: rabbitmq_ssl_key_create.yml
   when: >
-    inventory_hostname == groups['rabbitmq_all'][0]
+    inventory_hostname == groups[rabbitmq_host_group][0]
 
 - include: rabbitmq_ssl_key_store.yml
   when: >
-    inventory_hostname == groups['rabbitmq_all'][0]
+    inventory_hostname == groups[rabbitmq_host_group][0]
 
 - include: rabbitmq_ssl_key_distribute.yml
   when: >
-    inventory_hostname != groups['rabbitmq_all'][0]
+    inventory_hostname != groups[rabbitmq_host_group][0]

tests/inventory

@@ -4,10 +4,10 @@ container1 ansible_ssh_host=10.100.100.101 ansible_host=10.100.100.101 ansible_b
 container2 ansible_ssh_host=10.100.100.102 ansible_host=10.100.100.102 ansible_become=True ansible_user=root
 container3 ansible_ssh_host=10.100.100.103 ansible_host=10.100.100.103 ansible_become=True ansible_user=root
 
-[rabbitmq_all]
+[rabbitmq_all_other]
 container1
 container2
 container3
 
 [all_containers:children]
-rabbitmq_all
+rabbitmq_all_other

tests/test-install-rabbitmq-server.yml

@@ -16,7 +16,7 @@
 # NOTE(mancdaz): rabbitmq cannot be upgraded in serial, so when
 # rabbitmq_upgrade=True, serial is set to 0, else it is 1 for installs
 - name: Install RabbitMQ server
-  hosts: rabbitmq_all
+  hosts: "{{ rabbitmq_host_group }}"
   serial: "{{ rabbitmq_upgrade|default(false) | bool | ternary(0, 1)}}"
   user: root
   gather_facts: true

tests/test-rabbitmq-server-functional.yml

@@ -14,7 +14,7 @@
 # limitations under the License.
 
 - name: Run functional tests
-  hosts: rabbitmq_all
+  hosts: "{{ rabbitmq_host_group }}"
   user: root
   gather_facts: true
   vars_files:

tests/test-vars.yml

@@ -1,3 +1,4 @@
+rabbitmq_host_group: "rabbitmq_all_other"
 rabbitmq_cookie_token: secrete
 rabbitmq_ssl_cert: /etc/rabbitmq/rabbitmq.pem
 rabbitmq_ssl_key: /etc/rabbitmq/rabbitmq.key