Update to use oslo.messaging service for RPC and Notify

This introduces oslo.messaging variables that define the RPC and
Notify transports for the OpenStack services. These parameters
replace the rabbitmq values and are used to generate the messaging
transport_url for the service. The association of the messaging
backend server to the oslo.messaging services will then be
transparent to the keystone service.

This patch:
* Add oslo.messaging variables for RPC and Notify to defaults
* Update transport_url generation
* Update examples
* Add oslo.messaging to inventory
* Add release note

Depends-On: If4326a6848d2d32af284fdbb94798eb0b03734d5
Depends-On: I2b09145b60116c029fc85477399c24f94974b61d
Change-Id: I8d5b09dd0cb905e0dee40e260efbfeff1da180ce

defaults/main.yml

@@ -106,23 +106,24 @@ keystone_database_min_pool_size: 5
 keystone_database_max_pool_size: 120
 keystone_database_pool_timeout: 30
 
-## RabbitMQ info
-
-## Configuration for RPC communications
+## Oslo Messaging
 keystone_messaging_enabled: true
-keystone_rabbitmq_port: 5671
-keystone_rabbitmq_userid: keystone
-keystone_rabbitmq_vhost: /keystone
-keystone_rabbitmq_servers: localhost
-keystone_rabbitmq_use_ssl: false
 
-## Configuration for notifications communication, i.e. [oslo_messaging_notifications]
-keystone_rabbitmq_telemetry_userid: "{{ keystone_rabbitmq_userid }}"
-keystone_rabbitmq_telemetry_password: "{{ keystone_rabbitmq_password }}"
-keystone_rabbitmq_telemetry_vhost: "{{ keystone_rabbitmq_vhost }}"
-keystone_rabbitmq_telemetry_port: "{{ keystone_rabbitmq_port }}"
-keystone_rabbitmq_telemetry_servers: "{{ keystone_rabbitmq_servers }}"
-keystone_rabbitmq_telemetry_use_ssl: "{{ keystone_rabbitmq_use_ssl }}"
+# RPC
+keystone_oslomsg_rpc_transport: rabbit
+keystone_oslomsg_rpc_servers: 127.0.0.1
+keystone_oslomsg_rpc_port: 5672
+keystone_oslomsg_rpc_use_ssl: False
+keystone_oslomsg_rpc_userid: keystone
+keystone_oslomsg_rpc_vhost: /keystone
+
+# Notify
+keystone_oslomsg_notify_transport: rabbit
+keystone_oslomsg_notify_servers: 127.0.0.1
+keystone_oslomsg_notify_port: 5672
+keystone_oslomsg_notify_use_ssl: False
+keystone_oslomsg_notify_userid: keystone
+keystone_oslomsg_notify_vhost: /keystone
 
 ## Role info
 keystone_role_name: admin
@@ -460,6 +461,8 @@ keystone_policy_overrides: {}
 keystone_required_secrets:
   - keystone_auth_admin_password
   - keystone_container_mysql_password
+  - keystone_oslomsg_rpc_password
+  - keystone_oslomsg_notify_password
   - keystone_rabbitmq_password
   - keystone_service_password
 

examples/playbook.yml

@@ -41,11 +41,19 @@
         keystone_git_install_branch: master
         keystone_auth_admin_password: "SuperSecretePassword"
         keystone_service_password: "secrete"
-        keystone_rabbitmq_password: "secrete"
+        keystone_oslomsg_rpc_password: "secrete"
+        keystone_oslomsg_notify_password: "secrete"
         keystone_container_mysql_password: "SuperSecrete"
-        keystone_rabbitmq_port: 5671
-        keystone_rabbitmq_userid: keystone
-        keystone_rabbitmq_vhost: /keystone
-        keystone_rabbitmq_servers: 10.100.100.101
-        keystone_rabbitmq_use_ssl: true
+        keystone_oslomsg_rpc_transport: rabbit
+        keystone_oslomsg_rpc_servers: 10.100.100.101
+        keystone_oslomsg_rpc_port: 5671
+        keystone_oslomsg_rpc_use_ssl: true
+        keystone_oslomsg_rpc_userid: keystone
+        keystone_oslomsg_rpc_vhost: /keystone
+        keystone_oslomsg_notify_transport: rabbit
+        keystone_oslomsg_notify_servers: 10.100.100.101
+        keystone_oslomsg_notify_port: 5671
+        keystone_oslomsg_notify_use_ssl: true
+        keystone_oslomsg_notify_userid: keystone
+        keystone_oslomsg_notify_vhost: /keystone
         galera_client_drop_config_file: false

releasenotes/notes/oslo-messaging-separate-backends-e68c98d4f9d9a79c.yaml

@@ -0,0 +1,19 @@
+---
+features:
+  - Support separate oslo.messaging services for RPC and Notifications
+    to enable operation of separate and different messaging backend servers.
+deprecations:
+  - |
+    The rabbitmq server parameters have been replaced by corresponding
+    oslo.messaging RPC and Notify parameters in order to abstract the
+    messaging service from the actual backend server deployment.
+    - keystone_oslomsg_rpc_servers replaces keystone_rabbitmq_servers
+    - keystone_oslomsg_rpc_port replaces keystone_rabbitmq_port
+    - keystone_oslomsg_rpc_use_ssl replaces keystone_rabbitmq_use_ssl
+    - keystone_oslomsg_rpc_userid replaces keystone_rabbitmq_userid
+    - keystone_oslomsg_rpc_vhost replaces keystone_rabbitmq_vhost
+    - keystone_oslomsg_notify_servers replaces keystone_rabbitmq_telemetry_servers
+    - keystone_oslomsg_notify_port replaces keystone_rabbitmq_telemetry_port
+    - keystone_oslomsg_notify_use_ssl replaces keystone_rabbitmq_telemetry_use_ssl
+    - keystone_oslomsg_notify_userid replaces keystone_rabbitmq_telemetry_userid
+    - keystone_oslomsg_notify_vhost replaces keystone_rabbitmq_telemetry_vhost

templates/keystone.conf.j2

@@ -18,18 +18,15 @@ secure_proxy_ssl_header = {{ keystone_secure_proxy_ssl_header }}
 log_file = keystone.log
 log_dir = /var/log/keystone
 
-## RabbitMQ RPC
+## Oslo.Messaging RPC
 {% if keystone_messaging_enabled | bool %}
-transport_url = rabbit://{% for host in keystone_rabbitmq_servers.split(',') %}{{ keystone_rabbitmq_userid }}:{{ keystone_rabbitmq_password }}@{{ host }}:{{ keystone_rabbitmq_port }}{% if not loop.last %},{% else %}/{{ keystone_rabbitmq_vhost }}{% endif %}{% endfor %}
-
-[oslo_messaging_rabbit]
-ssl = {{ keystone_rabbitmq_use_ssl }}
+transport_url = {{ keystone_oslomsg_rpc_transport }}://{% for host in keystone_oslomsg_rpc_servers.split(',') %}{{ keystone_oslomsg_rpc_userid }}:{{ keystone_oslomsg_rpc_password }}@{{ host }}:{{ keystone_oslomsg_rpc_port }}{% if not loop.last %},{% else %}/{{ keystone_oslomsg_rpc_vhost }}{% if keystone_oslomsg_rpc_use_ssl | bool %}?ssl=1{% else %}?ssl=0{% endif %}{% endif %}{% endfor %}
 {% endif %}
 
 {% if keystone_ceilometer_enabled %}
 [oslo_messaging_notifications]
 driver = messagingv2
-transport_url = rabbit://{% for host in keystone_rabbitmq_telemetry_servers.split(',') %}{{ keystone_rabbitmq_telemetry_userid }}:{{ keystone_rabbitmq_telemetry_password }}@{{ host }}:{{ keystone_rabbitmq_telemetry_port }}{% if not loop.last %},{% else %}/{{ keystone_rabbitmq_telemetry_vhost }}{% endif %}{% endfor %}
+transport_url = {{ keystone_oslomsg_notify_transport }}://{% for host in keystone_oslomsg_notify_servers.split(',') %}{{ keystone_oslomsg_notify_userid }}:{{ keystone_oslomsg_notify_password }}@{{ host }}:{{ keystone_oslomsg_notify_port }}{% if not loop.last %},{% else %}/{{ keystone_oslomsg_notify_vhost }}{% if keystone_oslomsg_notify_use_ssl | bool %}?ssl=1{% else %}?ssl=0{% endif %}{% endif %}{% endfor %}
 {% endif %}
 
 {% if keystone_cache_servers | length > 0 %}

tests/inventory

@@ -9,6 +9,12 @@ infra1
 keystone1
 keystone2
 
+[oslomsg_rpc_all]
+infra1
+
+[oslomsg_notify_all]
+infra1
+
 [rabbitmq_all]
 infra1