Refactor MariaDB and RabbitMQ restart procedure

Ansible 2.14.3 introduced a change that broke the method used for
restarting MariaDB and RabbitMQ serially [1][2]. In
I57425680a4cdbf0daeb9b2cc35920f1b933aa4a8 we limited to 2.14.2 to work
around this. Ansible upstream claim this behaviour was unintentional,
and will not fix it.

This change moves to a different approach where we use separate plays
with a 'serial' keyword to execute the restart.

This change also removes the restriction on the maximum supported
version of 2.14.2 on ansible-core - any 2.14 release is now supported.

[1] https://github.com/ansible/ansible/commit/65366f663de7d044f42ae6dd53368fd4c1f88b35
[2] https://github.com/ansible/ansible/issues/80848

Depends-On: https://review.opendev.org/c/openstack/kolla/+/884208

Change-Id: I5a12670d07077d24047aaff57ce8d33ccf7156ff

1 files changed, 115 insertions, 0 deletions

diff --git a/ansible/rabbitmq.yml b/ansible/rabbitmq.yml
new file mode 100644
index 000000000..370600c8e
--- /dev/null
+++ b/ansible/rabbitmq.yml
@@ -0,0 +1,115 @@
+---
+# For RabbitMQ we need to be careful about restarting services, to avoid losing quorum.
+- name: Apply role rabbitmq
+  gather_facts: false
+  hosts:
+    - rabbitmq
+    - '&enable_rabbitmq_True'
+  tags:
+    - rabbitmq
+  tasks:
+    - import_role:
+        name: rabbitmq
+      vars:
+        role_rabbitmq_cluster_cookie: '{{ rabbitmq_cluster_cookie }}'
+        role_rabbitmq_cluster_port: '{{ rabbitmq_cluster_port }}'
+        role_rabbitmq_epmd_port: '{{ rabbitmq_epmd_port }}'
+        role_rabbitmq_groups: rabbitmq
+        role_rabbitmq_management_port: '{{ rabbitmq_management_port }}'
+        role_rabbitmq_monitoring_password: '{{ rabbitmq_monitoring_password }}'
+        role_rabbitmq_monitoring_user: '{{ rabbitmq_monitoring_user }}'
+        role_rabbitmq_password: '{{ rabbitmq_password }}'
+        role_rabbitmq_port: '{{ rabbitmq_port }}'
+        role_rabbitmq_prometheus_port: '{{ rabbitmq_prometheus_port }}'
+        role_rabbitmq_user: '{{ rabbitmq_user }}'
+
+- name: Restart rabbitmq services
+  gather_facts: false
+  hosts:
+    - rabbitmq_restart
+    - '&enable_rabbitmq_True'
+  # Restart in batches
+  serial: "33%"
+  tags:
+    - rabbitmq
+  tasks:
+    - import_role:
+        name: rabbitmq
+        tasks_from: restart_services.yml
+      vars:
+        role_rabbitmq_cluster_cookie: '{{ rabbitmq_cluster_cookie }}'
+        role_rabbitmq_groups: rabbitmq
+
+- name: Apply rabbitmq post-configuration
+  gather_facts: false
+  hosts:
+    - rabbitmq
+    - '&enable_rabbitmq_True'
+  tags:
+    - rabbitmq
+  tasks:
+    - name: Include rabbitmq post-deploy.yml
+      include_role:
+        name: rabbitmq
+        tasks_from: post-deploy.yml
+      when: kolla_action in ['deploy', 'reconfigure']
+      vars:
+        role_rabbitmq_cluster_cookie: '{{ rabbitmq_cluster_cookie }}'
+        role_rabbitmq_groups: rabbitmq
+
+- name: Apply role rabbitmq (outward)
+  gather_facts: false
+  hosts:
+    - outward-rabbitmq
+    - '&enable_outward_rabbitmq_True'
+  tags:
+    - rabbitmq
+  tasks:
+    - import_role:
+        name: rabbitmq
+      vars:
+        project_name: outward_rabbitmq
+        role_rabbitmq_cluster_cookie: '{{ outward_rabbitmq_cluster_cookie }}'
+        role_rabbitmq_cluster_port: '{{ outward_rabbitmq_cluster_port }}'
+        role_rabbitmq_epmd_port: '{{ outward_rabbitmq_epmd_port }}'
+        role_rabbitmq_groups: outward-rabbitmq
+        role_rabbitmq_management_port: '{{ outward_rabbitmq_management_port }}'
+        role_rabbitmq_password: '{{ outward_rabbitmq_password }}'
+        role_rabbitmq_port: '{{ outward_rabbitmq_port }}'
+        role_rabbitmq_prometheus_port: '{{ outward_rabbitmq_prometheus_port }}'
+        role_rabbitmq_user: '{{ outward_rabbitmq_user }}'
+
+- name: Restart rabbitmq (outward) services
+  gather_facts: false
+  hosts:
+    - outward_rabbitmq_restart
+    - '&enable_outward_rabbitmq_True'
+  # Restart in batches
+  serial: "33%"
+  tags:
+    - rabbitmq
+  tasks:
+    - import_role:
+        name: rabbitmq
+        tasks_from: restart_services.yml
+      vars:
+        project_name: outward_rabbitmq
+        role_rabbitmq_cluster_cookie: '{{ outward_rabbitmq_cluster_cookie }}'
+        role_rabbitmq_groups: outward-rabbitmq
+
+- name: Apply rabbitmq (outward) post-configuration
+  gather_facts: false
+  hosts:
+    - outward-rabbitmq
+    - '&enable_outward_rabbitmq_True'
+  tags:
+    - rabbitmq
+  tasks:
+    - name: Include rabbitmq (outward) post-deploy.yml
+      include_role:
+        name: rabbitmq
+      when: kolla_action in ['deploy', 'reconfigure']
+      vars:
+        project_name: outward_rabbitmq
+        role_rabbitmq_cluster_cookie: '{{ outward_rabbitmq_cluster_cookie }}'
+        role_rabbitmq_groups: outward-rabbitmq