Horizon interface address and memcached override

Note: This should not result in any behavior changes in regular Kolla, just
Kolla-Kubernetes and only when you've overridden stuff in globals.yml

Allows override of interface address and memcached pools, so that Kubernetes
can do the right thing.

There are some significant architectural issues involved in memcached pooling
in the Kolla-kubernetes world.  Avoiding them right now.

Current working with this Kolla-Kubernetes globals.yml file:

api_interface_address: "0.0.0.0"

memcached_servers: "memcached"

keystone_database_address: "mariadb"
keystone_admin_url: "http://keystone-admin:35357/v3"
keystone_internal_url: "http://keystone-public:5000/v3"
keystone_public_url: "http://keystone-public:5000/v3"

Three tings to note:
 * In Kolla-Kubernetes, the service is not using net=host, so a
   0.0.0.0 interface address is totally OK.  That patch has been merged.
 * In Kolla-Kubernetes, the global.yml file doesn't do var substitution
   so you have to be explicit about the URLs, otherwise Keystone will
   look like it was provisioned but it won't quite be provisioned right.
 * In order to not duplicate tons of code, moved the keystone_admin_url /
   keystone_internal_url / keystone_public_url to the common defaults
   from the keystone defaults.

Co-Authored-By: Ryan Hallisey <rhallise@redhat.com>
Change-Id: I586ce1c6c3300254c4e2a398ff46645df576aeb0
Partially-implements: blueprint api-interface-bind-address-override

ansible/roles/common/defaults/main.yml

@@ -17,3 +17,10 @@ heka_image_full: "{{ heka_image }}:{{ heka_tag }}"
 cron_image: "{{ docker_registry ~ '/' if docker_registry else '' }}{{ docker_namespace }}/{{ kolla_base_distro }}-{{ kolla_install_type }}-cron"
 cron_tag: "{{ openstack_release }}"
 cron_image_full: "{{ cron_image }}:{{ cron_tag }}"
+
+####################
+# OpenStack
+####################
+keystone_admin_url: "{{ admin_protocol }}://{{ kolla_internal_fqdn }}:{{ keystone_admin_port }}/v3"
+keystone_internal_url: "{{ internal_protocol }}://{{ kolla_internal_fqdn }}:{{ keystone_public_port }}/v3"
+keystone_public_url: "{{ public_protocol }}://{{ kolla_external_fqdn }}:{{ keystone_public_port }}/v3"

ansible/roles/horizon/templates/horizon.conf.j2

@@ -1,5 +1,5 @@
 {% set python_path = '/usr/lib/python2.7/site-packages' if kolla_install_type == 'binary' else '/var/lib/kolla/venv/lib/python2.7/site-packages' %}
-Listen {{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] }}:80
+Listen {{ api_interface_address }}:80
 
 <VirtualHost *:80>
     LogLevel warn

ansible/roles/horizon/templates/local_settings.j2

@@ -132,7 +132,12 @@ SECRET_KEY='{{ horizon_secret_key }}'
 CACHES = {
     'default': {
         'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',
-        'LOCATION': [{% for host in groups['memcached'] %}'{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ memcached_port }}'{% if not loop.last %},{% endif %}{% endfor %}]
+
+{% if orchestration_engine == 'KUBERNETES' %}
+        'LOCATION': '{{ memcached_servers }}'
+{% else %}
+        'LOCATION': '{% for host in groups['memcached'] %}{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ memcached_port }}{% if not loop.last %},{% endif %}{% endfor %}'
+{%- endif %}
     }
 }
 
@@ -154,7 +159,7 @@ EMAIL_BACKEND = 'django.core.mail.backends.console.EmailBackend'
 #]
 
 OPENSTACK_HOST = "{{ kolla_internal_fqdn }}"
-OPENSTACK_KEYSTONE_URL = "{{ internal_protocol }}://%s:{{ keystone_public_port }}/v3" % OPENSTACK_HOST
+OPENSTACK_KEYSTONE_URL = "{{ keystone_public_url }}"
 OPENSTACK_KEYSTONE_DEFAULT_ROLE = "_member_"
 
 # Enables keystone web single-sign-on if set to True.

ansible/roles/keystone/defaults/main.yml

@@ -20,10 +20,6 @@ keystone_image_full: "{{ keystone_image }}:{{ keystone_tag }}"
 ####################
 # OpenStack
 ####################
-keystone_admin_url: "{{ admin_protocol }}://{{ kolla_internal_fqdn }}:{{ keystone_admin_port }}/v3"
-keystone_internal_url: "{{ internal_protocol }}://{{ kolla_internal_fqdn }}:{{ keystone_public_port }}/v3"
-keystone_public_url: "{{ public_protocol }}://{{ kolla_external_fqdn }}:{{ keystone_public_port }}/v3"
-
 keystone_logging_debug: "{{ openstack_logging_debug }}"
 
-openstack_keystone_auth: "{'auth_url':'{{ openstack_auth.auth_url }}','username':'{{ openstack_auth.username }}','password':'{{ openstack_auth.password }}','project_name':'{{ openstack_auth.project_name }}','domain_name':'default'}"
+openstack_keystone_auth: "{'auth_url':'{{ openstack_auth.auth_url }}','username':'{{ openstack_auth.username }}','password':'{{ openstack_auth.password }}','project_name':'{{ openstack_auth.project_name }}','domain_name':'default'}"