Update rabbitmq-reset for Epoxy

With the introduction of oslo.messaging Queue Manager, we need to clear
shared memory when wiping queues from RabbitMQ. This is because
oslo.messaging assumes that a queue with an entry under shared memory
exists in the RabbitMQ cluster.

With the introduction of durable queues for reply/fanout queues, we need
stop the services before wiping queues from RabbitMQ. This is because
fanout queues in particular are not just created on container startup,
so services may attempt to use them after the RabbitMQ state has been
reset.

Removes the tags as it no longer makes sense to only run part of this
playbook.

Author: MoteHue

etc/kayobe/ansible/rabbitmq-reset.yml

@@ -2,12 +2,25 @@
 # Reset a broken RabbitMQ cluster.
 # Also restarts all OpenStack services using RabbitMQ.
 
+- name: Stop OpenStack services
+  hosts: controllers:compute:storage
+  become: true
+  gather_facts: false
+  tasks:
+    # The following services use RabbitMQ.
+    - name: Stop OpenStack services
+      ansible.builtin.shell:
+        cmd: >-
+          set -o pipefail &&
+          systemctl -a | egrep 'kolla-(barbican|blazar|cinder|cloudkitty|designate|heat|ironic|keystone|magnum|manila|neutron|nova|octavia)' |
+          awk '{ print $NF }' |
+          xargs systemctl stop
+        executable: "/bin/bash"
+
 - name: Reset RabbitMQ
   hosts: controllers
   become: true
   gather_facts: false
-  tags:
-    - rabbitmq-reset
   vars:
     container_name: rabbitmq
   tasks:
@@ -59,18 +72,21 @@
       ansible.builtin.command: docker exec {{ container_name }} /bin/bash -c 'rabbitmqctl await_online_nodes {{ groups['controllers'] | length }}'
 
 - name: Restart OpenStack services
-  hosts: controllers:compute
+  hosts: controllers:compute:storage
   become: true
   gather_facts: false
-  tags:
-    - restart-openstack
   tasks:
+    - name: Clear shared memory
+      ansible.builtin.shell:
+        cmd: >
+          rm -rf /dev/shm/*_qmanager
+
     # The following services use RabbitMQ.
     - name: Restart OpenStack services
       ansible.builtin.shell:
         cmd: >-
           set -o pipefail &&
           systemctl -a | egrep 'kolla-(barbican|blazar|cinder|cloudkitty|designate|heat|ironic|keystone|magnum|manila|neutron|nova|octavia)' |
-          awk '{ print $1 }' |
+          awk '{ print $NF }' |
           xargs systemctl restart
         executable: "/bin/bash"